EP3710158A1 - Catalyseur scr - Google Patents

Catalyseur scr

Info

Publication number
EP3710158A1
EP3710158A1 EP18796990.2A EP18796990A EP3710158A1 EP 3710158 A1 EP3710158 A1 EP 3710158A1 EP 18796990 A EP18796990 A EP 18796990A EP 3710158 A1 EP3710158 A1 EP 3710158A1
Authority
EP
European Patent Office
Prior art keywords
catalyst
oxide
weight
catalyst according
vanadium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18796990.2A
Other languages
German (de)
English (en)
Inventor
Elodie Quinet
Stephan Malmberg
Nicola Soeger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Umicore AG and Co KG
Original Assignee
Umicore AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Umicore AG and Co KG filed Critical Umicore AG and Co KG
Publication of EP3710158A1 publication Critical patent/EP3710158A1/fr
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/30—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/066—Zirconium or hafnium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/18—Arsenic, antimony or bismuth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/20—Vanadium, niobium or tantalum
    • B01J23/22—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/28—Molybdenum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0027—Powdering
    • B01J37/0036—Grinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation
    • B01J37/031—Precipitation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/04—Mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment
    • B01J37/082—Decomposition and pyrolysis
    • B01J37/088—Decomposition of a metal salt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/12—Oxidising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/103—Oxidation catalysts for HC and CO only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
    • F01N3/106—Auxiliary oxidation catalysts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/206—Rare earth metals
    • B01D2255/2065—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20723—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20776—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/209—Other metals
    • B01D2255/2098—Antimony
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/30—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/40—Mixed oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/30—Constitutive chemical elements of heterogeneous catalysts of Group III (IIIA or IIIB) of the Periodic Table
    • B01J2523/37—Lanthanides
    • B01J2523/3712—Cerium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/40—Constitutive chemical elements of heterogeneous catalysts of Group IV (IVA or IVB) of the Periodic Table
    • B01J2523/47—Titanium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/50—Constitutive chemical elements of heterogeneous catalysts of Group V (VA or VB) of the Periodic Table
    • B01J2523/53—Antimony
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/50—Constitutive chemical elements of heterogeneous catalysts of Group V (VA or VB) of the Periodic Table
    • B01J2523/55—Vanadium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/50—Constitutive chemical elements of heterogeneous catalysts of Group V (VA or VB) of the Periodic Table
    • B01J2523/56—Niobium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/60—Constitutive chemical elements of heterogeneous catalysts of Group VI (VIA or VIB) of the Periodic Table
    • B01J2523/69—Tungsten
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
    • B01J2523/80—Constitutive chemical elements of heterogeneous catalysts of Group VIII of the Periodic Table
    • B01J2523/82—Metals of the platinum group
    • B01J2523/822—Rhodium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2370/00—Selection of materials for exhaust purification
    • F01N2370/02—Selection of materials for exhaust purification used in catalytic reactors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
    • F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to a SCR catalyst based on vanadium oxide containing antimony and cerium oxide.
  • the exhaust gas of motor vehicles which are operated with lean-burn combustion engines, for example with diesel engines, contains not only carbon monoxide (CO) and nitrogen oxides (NOx) but also components resulting from the incomplete combustion of the fuel in the combustion chamber of the cylinder.
  • CO carbon monoxide
  • NOx nitrogen oxides
  • HC residual hydrocarbons
  • these also include particulate emissions.
  • These are complex agglomerates of predominantly carbon-containing solid particles and an adhering liquid phase, which mostly consists of relatively long-chain hydrocarbon condensates.
  • Liquid phase is also referred to as “Soluble Organic Fraction SOF” or “Volatile Organic Fraction VOR”.
  • One known method of removing nitrogen oxides from exhaust gases in the presence of oxygen is the selective catalytic reduction by means of ammonia on a suitable catalyst (SCR process).
  • SCR process the nitrogen oxides to be removed from the exhaust gas are reacted with ammonia as a reducing agent to nitrogen and water.
  • the exhaust gas from lean-burn internal combustion engines usually comprises NO.sub.2 in amounts of only about 10% of the total nitrogen oxide fraction, it is normally the intention to increase its proportion in order to benefit from the rapid SCR reaction. This happens, for example, by means of an upstream oxidation catalyst. Depending on the exhaust system used in the specific case, however, an SCR catalytic converter may nevertheless have very different NO 2 / NO x ratios
  • ammonia used as a reducing agent can be prepared by metering in an ammonia precursor compound, such as, for example, urea,
  • Ammonium carbamate or ammonium formate are made available in the exhaust line and subsequent hydrolysis.
  • mixed oxide catalysts are based on oxides of vanadium and usually also oxides of titanium and other metals, such as tungsten, contain (see Isabella Nova and Enrico Tronconi (ed.), Urea SCR Technology for deOx After Treatment of Diesel Exhausts, Chapter 3, Springer Verlag, 2014).
  • SCR catalysts based on vanadium oxide are characterized by good activity and stability. However, they show significant activity losses in the case of excess N02. Although the addition of ceria to the vanadium oxide-based SCR catalysts improves N02 excess activity, it also decreases the low temperature activity (T ⁇ 250 ° C) with NO excess.
  • vanadium oxide-based SCR catalysts which have both good NO 2 excess activity and NO excess and low temperatures (T ⁇ 250 ° C) have. Furthermore, there is a need to improve the thermal stability of vanadium-based SCR catalysts. It is already known to also use antimony oxide in metal oxide-based SCR catalysts. For example, US 9,662,610 discloses a process for the reduction of nitrogen oxides by means of a catalyst comprising titanium dioxide, vanadium compounds and antimony compounds. The
  • WO2017 / 101449 A1 discloses the use of a catalyst composition containing titanium dioxide, a composite oxide containing vanadium and antimony, and optionally oxides of silicon. Vanadiums and antimony covers.
  • CN106215929 discloses a cerium-antimony composite oxide known as
  • US Pat. No. 8,975,206 discloses a catalyst composition which, in addition to vanadium and titanium, may also contain antimony.
  • the present invention accordingly relates to a catalyst which
  • At least one oxide of cerium in an amount of 2 to 4% by weight
  • At least one oxide of the antimony in an amount of 1 to 7 wt .-%, and
  • At least one oxide of titanium in an amount calculated to result in a total of 100% by weight
  • the at least one oxide of titanium acts as a carrier material
  • the at least one oxide of vanadium acts as the active catalyst component
  • the respective at least one oxide of tungsten, cerium and antimony as promoters. Promoters are substances
  • the catalyst according to the invention additionally contains at least one oxide of silicon. In further embodiments of the catalyst according to the invention, it additionally contains at least one oxide of molybdenum, of niobium, of zirconium, of tantalum and / or of hafnium.
  • the catalyst according to the invention contains at least one oxide of cerium in amounts of 2 to 4 wt .-%, based on the weight of the catalyst and calculated as CeO 2. In further preferred embodiments of the invention
  • Catalyst it contains at least one oxide of the antimony in amounts of 1 to 7 wt .-%, based on the weight of the catalyst and calculated as Sb 2 0. 5
  • At least one oxide of the antimony in amounts of 1 to 7 wt .-%, based on the weight of the catalyst and calculated as Sb 2 0. 5
  • the at least one oxide of cerium in amounts of 2 to 4 wt .-% and calculated as Ce0 2
  • at least one oxide of the antimony in amounts of 1 to 7 wt .-%, each based on the weight of the catalyst and calculated as Sb 2 Os, included.
  • At least one oxide of vanadium in an amount of 2 to 6% by weight At least one oxide of vanadium in an amount of 2 to 6% by weight
  • the catalyst according to the invention contains at least one oxide of the silicon, it is preferably present in amounts of from 2 to 7% by weight, based on the weight of the catalyst and calculated as S1O2. If the catalyst according to the invention at least one oxide of
  • Hafnium comprises, the total amount of these oxides is preferably 0.5 to 20 wt .-%, based on the weight of the catalyst and calculated as M0O3, Nb 2 0 5 , ZrÜ2, Ta2Ü 5 or Hf02.
  • the catalyst according to the invention is preferably free of magnesium or compounds of magnesium.
  • the catalyst according to the invention is also free of zirconium or compounds of zirconium.
  • oxide of vanadium in the context of the present invention comprises all oxides which are formed under the conditions of preparation, storage and use of the catalyst according to the invention or
  • V2O5 may be present. It thus includes, for example, V2O5, but also all other oxides of vanadium.
  • oxide of tungsten includes, for example, WO3, but also all other oxides of tungsten, the term oxide of cerium for example CeÜ2, but also all other oxides of cerium, the term oxide of the antimony for example Sb2Ü 5 , but also all others Oxides of antimony, the term oxide of titanium, for example, T1O2, but also all other oxides of titanium, and oxide of silicon, for example S1O2, but also all other oxides of silicon.
  • oxide of molybdenum, niobium, zirconium, tantalum or hafnium oxide of tungsten.
  • the catalyst according to the invention can be prepared in a simple manner.
  • oxides of vanadium, tungsten, cerium, antimony and titanium and, if appropriate, the other metal oxides in powder form can be intimately mixed in the desired amounts and then calcined. However, it is generally advantageous to suspend the said oxides in water and then to dry and calcine.
  • Suitable water-soluble vanadium compounds are in particular Vanadyloxalat, by
  • Vanadium pentoxide with amines or ethanolamines see for example WO89 / 03366 Al and W02011 / 013006), especially ammonium metavanadate.
  • DE 11 2007 000 814 T5 also describes the use of vanadium oxytrichloride.
  • oxides of vanadium, cerium, antimony and titanium can also be introduced and then with the aqueous solution of a water-soluble
  • Tungsten compound impregnated and subsequently dried and calcined A suitable water-soluble tungsten compound is
  • two or more metal oxides may also be used in the form of the corresponding mixed oxides or in the form of metal oxides doped with one or more other metal oxides.
  • the catalyst according to the invention can be present as a mixture of metal oxides, as mixed oxide, but especially in the form of intermediates between a mixture of metal oxides and mixed oxide.
  • two or three metals may be in the form of a mixed oxide impregnated with the remaining metals.
  • the catalyst according to the invention is present as a coating on a carrier body, which may be present as a flow-through honeycomb body or wall-flow filter.
  • the support body is catalytically inert and is made of ceramic or metallic material, for example of silicon carbide, aluminum titanate or cordierite. In these embodiments, all components of the catalyst according to the invention are present in a coating.
  • Coated carrier bodies can be produced by methods familiar to the person skilled in the art, for example by the customary dip coating methods or by pumping and suction coating methods
  • Inventive catalyst itself component of the support body, which is formed in this case from the catalyst of the invention, and a matrix component.
  • catalyst substrates used inert materials can be used. These are, for example, silicates, oxides, nitrides or carbides, with particular preference being given to magnesium-aluminum silicates.
  • the catalyst according to the invention is outstandingly suitable for the reduction of nitrogen oxides in exhaust gases of lean-operated
  • the present invention thus also relates to a method for
  • a reducing agent is particularly ammonia in question, with particular advantage to nitrogen oxides containing exhaust gas not ammonia itself, but an ammonia precursor, in particular urea,
  • the catalyst of the invention is used as part of an exhaust gas purification system which, for example, in addition to the catalyst according to the invention arranged upstream
  • Oxidation catalyst and a diesel particulate filter comprises.
  • the catalyst according to the invention can also be used as a coating on the
  • the present invention thus also relates to an exhaust gas purification system for treating diesel exhaust gas in the flow direction of the exhaust gas
  • Suitable for the inventive exhaust gas purification system oxidation catalysts in particular platinum, palladium or platinum and palladium supported on, for example, alumina, and diesel particulate filter are known in the art and available on the market.
  • the exhaust gas purification system according to the invention comprises a device arranged downstream of the catalyst according to the invention for dosing in the reducing agent.
  • the injection device can be chosen arbitrarily by the person skilled in the art, suitable devices being able to be taken from the literature (see, for example, T. Mayer, Solid-SCR System Based on Ammonium Carbamate, Dissertation, TU Kaiserslautern, 2005).
  • a reducing agent in particular ammonia as such or in the form of a compound is introduced into the exhaust gas stream via the injection device, from which ammonia is formed at the ambient conditions.
  • aqueous solutions of urea or ammonium formate in question, as well as solid ammonium carbamate As such, for example, aqueous solutions of urea or ammonium formate in question, as well as solid ammonium carbamate.
  • the reducing agent or a precursor thereof is kept in stock in a entrained container which is connected to the injection device.
  • Figure 1 nitrogen oxide conversions in the standard SCR reaction, measured on the catalyst of the invention Kl in comparison to comparative catalysts VK1, VK2 VK3, VK4 and VK5 in the fresh state (Klf, VKlf, VK2f, VK3f, VK4f and VK5f).
  • FIG. 2 Nitrogen oxide conversions in the standard SCR reaction, measured on the catalyst Kl according to the invention in comparison to comparative catalysts VK1, VK2, VK3, VK4 and VK5 in the aged state (Kla, VKla, VK2a, VK3a, VK4a and VK5a).
  • FIG. 3 Nitrogen oxide conversions in the rapid SCR reaction, measured on the inventive catalyst Kl in comparison to comparative catalysts VK1, VK2, VK3, VK4 and VK5 in the fresh state (Klf, VKlf, VK2f, VK3f, VK4f and VK5f).
  • FIG. 4 Nitrogen oxide conversions in the rapid SCR reaction, measured on the inventive catalyst Kl in comparison to comparative catalysts VK1, VK2, VK3, VK4 and VK5 in the aged state (Kla, VKla, VK2a, VK3a, VK4a and VK5a).
  • FIG. 5 nitrogen oxide conversions in the standard SCR reaction at 200 ° C. and the rapid SCR reaction at 300 ° C. against the WO 3 content, measured on the inventive catalyst Kl in comparison to the comparative catalysts VK 4, VK 6 and VK 7 in fresh and aged condition.
  • Catalyst Kl is fresh and will therefore be
  • Klf hereinafter referred to as Klf.
  • Anatase titanium dioxide was dispersed in water and then vanadium dioxide (VO2) and tungsten trioxide (WO3) were added in amounts such that a catalyst of the composition 90.5 wt% T1O2, 4.75 wt% S1O2, 3.75 wt .-% V2O5, 1.00 wt .-% WO3 results.
  • the slurry was stirred vigorously and finally stirred in a commercially available stirred ball mill.
  • VKla obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). The catalyst VK1 is then aged and is referred to below as VKla.
  • Anatase titanium dioxide was dispersed in water and then vanadium dioxide (VO2), tungsten trioxide (WO3) and ceria (CeCte) were added in amounts to form a catalyst of composition 88.60
  • VK2a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK2 is then aged and is referred to below as VK2a. Comparative Example 3
  • Titanium dioxide in the anatase form was dispersed in water and then vanadium dioxide (VO 2), tungsten trioxide (WO 3) and antimony pentoxide were added in amounts such that a catalyst of composition 87.9
  • VK3a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). The catalyst VK3 is then aged and is referred to below as VK3a.
  • Titanium dioxide in the anatase form was dispersed in water and then vanadium dioxide (VO2), tungsten trioxide (WO3) and antimony pentoxide were added in amounts such that a catalyst of the composition 86.9% by weight of T1O2, 4.60% by weight of S1O2, 3, 75 wt .-% V2O5, 2.00 wt .-% CeOi and 2.75 wt .-% Sb2Ü 5 results.
  • the slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • the dispersion obtained in a) was in the usual manner to a
  • VK4a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). The catalyst VK4 is then aged and is referred to below as VK4a. Comparative Example 5
  • VO2 vanadium dioxide
  • WO3 tungsten trioxide
  • CeCh roxide
  • Sb20s antimony pentoxide
  • VK5a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK5 is then aged and is referred to below as VK5a.
  • Titanium dioxide in the anatase form was dispersed in water and then Vanadium dioxide (VO2), tungsten trioxide (WO3), ceria (CeCte) and antimony pentoxide (Sb20s) were added in amounts such that a catalyst of the composition 86.45 wt .-% T1O2, 4.55 wt .-% S1O2, 3.75 wt .-% V2O5, 0.50 wt .-% WO3, 2.00 wt .-% and 2.75 wt .-% CeCte Sb2Ü 5 results.
  • the slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • VK6a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK6 is then aged and is referred to below as VK6a. Comparative Example 7
  • Anatase titanium dioxide was dispersed in water and then vanadium dioxide (VO2), tungsten trioxide (WO3), ceria (CeCte) and antimony pentoxide (Sb20s) were added in amounts to form a catalyst of composition 85.03 wt% T1O2, 4.47 Wt% S1O2, 3.75 wt% V2O5, 2.00 wt% WO3, 2.00 wt% CeCte, and 2.75 wt% Sb2Ü5. The slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • VO2 vanadium dioxide
  • WO3 tungsten trioxide
  • CeCte ceria
  • Sb20s antimony pentoxide
  • VK7a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK7 is then aged and is referred to below as VK7a.
  • Anatase titanium dioxide was dispersed in water and then vanadium dioxide (VO2), tungsten trioxide (WO3), ceria (CeCte) and antimony pentoxide (Sb20s) were added in amounts to form a catalyst of the composition 84.07 wt% T1O2, 4.43 wt .-% S1O2, 3.75 wt .-% V2O5, 1.00 wt .-% WO3, 4.00 wt .-% and 2.75 wt .-% CeCte Sb2Ü 5 results.
  • the slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • VK8a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK8 is then aged and is referred to below as VK8a.
  • Titanium dioxide in the anatase form was dispersed in water and then Vanadium dioxide (VO2), tungsten trioxide (WO3), ceria (CeCte) and antimony pentoxide (Sb20s) were added in amounts such that a catalyst of the composition 84.79 wt .-% T1O2, 4.46 wt .-% S1O2, 3.75 wt .-% V2O5, 1.00 wt .-% WO3, 2.00 wt .-% 4.00 wt .-% and Cech Sb2Ü 5 results.
  • the slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • VK9a obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). Catalyst VK9 is then aged and is referred to below as VK9a. Comparative Example 10
  • Anatase titanium dioxide was dispersed in water and then vanadium dioxide (VO2), tungsten trioxide (WO3), ceria (CeCte) and antimony pentoxide (Sb20s) were added in amounts to form a catalyst of the composition 81.94 wt% T1O2, 4.31 wt .-% S1O2, 3.75 wt .-% V2O5, 1.00 wt .-% WO3, 2.00 wt .-% 7.00 wt .-% and Cech Sb2Ü 5 results.
  • the slurry was stirred vigorously and finally ground in a commercially available stirred ball mill.
  • VK10a The VKlOa obtained according to b) was subjected to a hydrothermal aging for 48 hours at 700 ° C. in a gas atmosphere (10% O 2, 10% H 2 O, remainder N 2). The catalyst VK10 is then aged and is referred to below as VK10a.
  • Table 1 summarizes the compositions of the catalysts of the examples mentioned.
  • the composition of the catalyst according to the invention is not limited to explicitly shown examples.
  • Table 1 Compositions of the catalysts from the examples
  • the nitrogen oxide concentrations of the model gas were detected after passing through the catalyst with a suitable analysis. From the known, metered nitrogen oxide contents, which were verified during conditioning at the beginning of the respective test run with a pre-catalytic exhaust gas analysis, and the measured
  • Nitrogen oxide conversion based on the ratio of Nhb to NO, over the catalyst for each temperature measurement point calculated as follows:
  • Table 2 shows the NOx conversion in the standard SCR reaction for the examples described above.
  • Table 3 shows the NOx conversion in the fast SCR reaction for the examples described above.
  • VK4 was varied over 0.50 wt% (VK6), 1.00 wt% (KI) and 2.00 wt% (VK7).
  • VK3 was varied over 2.00 wt.% (KI) and 2.00 wt.% (K7).
  • VK2 was varied over 2.75 wt.% (KI), 4.00 wt.% (VK9) and 7.00 wt.% (VK10).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

La présente invention concerne un catalyseur, qui contient au moins un oxyde de vanadium, au moins un oxyde de tungstène, au moins un oxyde de cérium, au moins un oxyde de titane et au moins un oxyde d'antimoine, ainsi qu'un système d'échappement doté dudit catalyseur.
EP18796990.2A 2017-11-14 2018-11-13 Catalyseur scr Pending EP3710158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17201483.9A EP3482825A1 (fr) 2017-11-14 2017-11-14 Catalyseur rcs
PCT/EP2018/081072 WO2019096785A1 (fr) 2017-11-14 2018-11-13 Catalyseur scr

Publications (1)

Publication Number Publication Date
EP3710158A1 true EP3710158A1 (fr) 2020-09-23

Family

ID=60473285

Family Applications (2)

Application Number Title Priority Date Filing Date
EP17201483.9A Withdrawn EP3482825A1 (fr) 2017-11-14 2017-11-14 Catalyseur rcs
EP18796990.2A Pending EP3710158A1 (fr) 2017-11-14 2018-11-13 Catalyseur scr

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP17201483.9A Withdrawn EP3482825A1 (fr) 2017-11-14 2017-11-14 Catalyseur rcs

Country Status (8)

Country Link
US (2) US11135571B2 (fr)
EP (2) EP3482825A1 (fr)
JP (1) JP7222996B2 (fr)
KR (1) KR102730573B1 (fr)
CN (2) CN116474763B (fr)
BR (1) BR112020009690B1 (fr)
CA (1) CA3082497A1 (fr)
WO (1) WO2019096785A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021010768A1 (fr) * 2019-07-16 2021-01-21 주식회사 국일인토트 Appareil de réaction catalytique comprenant une composition de revêtement pour catalyseur et procédé de revêtement
CN110773211B (zh) * 2019-09-18 2022-09-13 上海瀚昱环保材料有限公司 高-低温脱硝催化剂及其制备方法
CN114364447B (zh) * 2019-09-19 2024-08-30 巴斯夫公司 选择性催化还原催化剂组合物、包含其的催化制品和制备催化制品的方法
EP4149661A4 (fr) * 2020-05-15 2024-05-22 BASF Corporation Catalyseur de réduction catalytique sélective et article catalytique le comprenant
US20230347288A1 (en) * 2020-05-15 2023-11-02 Basf Corporation Selective catalytic reduction catalyst and catalytic article comprising the same
KR102438438B1 (ko) * 2020-11-25 2022-09-01 한서대학교 산학협력단 고정배출원의 배기가스 처리 저온 탈질촉매 및 그 제조방법
EP4063003A1 (fr) 2021-03-23 2022-09-28 UMICORE AG & Co. KG Filtre pour le post-traitement de gaz d'échappement de moteurs à combustion interne
CN115707513B (zh) * 2021-08-19 2024-07-05 巴斯夫公司 用于选择性催化还原的金属氧化物催化剂
CN117836506A (zh) 2021-09-27 2024-04-05 巴斯夫公司 包含含锑催化剂的催化体系
DE102022130469A1 (de) 2022-11-17 2024-05-23 Umicore Ag & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung
DE102023117464A1 (de) 2023-07-03 2025-01-09 Umicore Ag & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Substrats für eine Abgasnachbehandlungseinrichtung
EP4360742A1 (fr) 2023-08-03 2024-05-01 Umicore AG & Co. KG Amélioration des performances scr de denox de catalyseurs scr à base de vandium à l'aide de revêtements d'imprégnation ayant différentes teneurs en vanadium
DE102023132075A1 (de) * 2023-11-17 2025-05-22 Umicore Ag & Co. Kg Katalytischer Partikelfilter

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165132A (en) 1979-06-08 1980-12-23 Mitsubishi Petrochem Co Ltd Removing method for nitrogen oxide
WO1989003366A1 (fr) 1987-10-06 1989-04-20 Johnson Matthey Inc. Catalyseur au vanadium/tungstene et procede
US4929586A (en) 1988-06-09 1990-05-29 W. R. Grace & Co.-Conn. Catalysts for selective catalytic reduction DeNOx technology
DE4314896A1 (de) * 1992-05-18 1993-11-25 Siemens Ag Verfahren und Einrichtung zur selektiven katalytischen Umsetzung von Ammoniak in ammoniakhaltigem Abgas
DE4321555C1 (de) * 1993-06-29 1994-09-15 Bayer Ag Verfahren zur Herstellung von Mischoxidpulvern für Entstickungskatalysatoren
JP2004290753A (ja) 2003-03-26 2004-10-21 Mitsubishi Chemical Engineering Corp 耐熱性脱硝触媒
JP4507901B2 (ja) 2005-02-07 2010-07-21 いすゞ自動車株式会社 排気ガス浄化システム及びその排気ガス浄化方法
KR100671978B1 (ko) 2005-07-19 2007-01-24 한국과학기술연구원 탈질환원촉매
KR100767563B1 (ko) 2006-04-03 2007-10-17 한국전력기술 주식회사 볼 밀링의 도입에 의하여 넓은 온도 대역에서 우수한질소산화물의 제거활성을 갖는 바나듐/티타니아계 촉매의제조방법 및 이의 사용방법
US8545796B2 (en) 2009-07-31 2013-10-01 Cristal Usa Inc. Silica-stabilized ultrafine anatase titania, vanadia catalysts, and methods of production thereof
US8491845B2 (en) 2009-09-10 2013-07-23 Cummins Ip, Inc. Low temperature selective catalytic reduction catalyst and associated systems and methods
RU2556207C2 (ru) 2010-04-16 2015-07-10 Трайбахер Индустри Аг Состав катализатора для селективного каталитического восстановления выхлопного газа
FR2962431B1 (fr) 2010-07-07 2018-01-19 Rhodia Operations Composition a base d'oxydes de cerium, de niobium et, eventuellement, de zirconium et son utilisation en catlyse.
US8617502B2 (en) * 2011-02-07 2013-12-31 Cristal Usa Inc. Ce containing, V-free mobile denox catalyst
JP5710749B2 (ja) 2011-04-21 2015-04-30 旭化成ケミカルズ株式会社 シリカ担持触媒
US9242211B2 (en) 2011-05-30 2016-01-26 The Babcock & Wilcox Company Catalysts possessing an improved resistance to poisoning
KR101284214B1 (ko) * 2012-10-04 2013-07-08 한국과학기술연구원 질소산화물 분해 촉매 및 그 제조 방법
JP6285945B2 (ja) * 2012-11-12 2018-02-28 ユミコア アクチェンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト ＮＯｘおよび粒子を含んでいるディーゼル排気ガスを処理するための触媒システム
EP2875863A1 (fr) * 2013-11-25 2015-05-27 Umicore AG & Co. KG Catalyseur RCS
GB2523241B (en) 2013-12-30 2018-04-18 Johnson Matthey Plc Selective catalytic reduction processes using doped cerias
KR101513834B1 (ko) * 2014-04-14 2015-04-20 두산엔진주식회사 선택적 촉매 환원을 위한 촉매 및 이의 제조방법
BR112017005048A2 (pt) * 2014-09-22 2017-12-05 Treibacher Ind Ag composições catalisadoras nh3-scr termicamente estáveis
EP3320193B1 (fr) 2015-07-09 2019-04-03 Umicore Ag & Co. Kg Système pour le nettoyage de particules et de composés nocifs dans des gaz d'échappement de moteur
RU2730513C2 (ru) * 2015-12-17 2020-08-24 Басф Корпорейшн Катализатор для селективного каталитического восстановления (scr), содержащий композитный оксид, содержащий v и sb, способ его получения и его применение для удаления оксидов азота
CN106215929B (zh) 2016-08-18 2019-01-29 上海众仕环境科技股份有限公司 一种铈基脱硝催化剂及其制备工艺
CN106423139A (zh) * 2016-11-14 2017-02-22 包头稀土研究院 一种稀土基scr脱硝催化剂及制备方法
CN106861675A (zh) * 2016-12-30 2017-06-20 大连瑞克科技有限公司 堇青石蜂窝陶瓷为基体的整体式低温脱硝催化剂及其制备方法

Also Published As

Publication number Publication date
CA3082497A1 (fr) 2019-05-23
CN116474763A (zh) 2023-07-25
US20210402376A1 (en) 2021-12-30
US11135571B2 (en) 2021-10-05
WO2019096785A1 (fr) 2019-05-23
US11498055B2 (en) 2022-11-15
CN111356526A (zh) 2020-06-30
EP3482825A1 (fr) 2019-05-15
BR112020009690B1 (pt) 2023-04-11
CN116474763B (zh) 2025-04-04
JP2021502892A (ja) 2021-02-04
US20200276561A1 (en) 2020-09-03
BR112020009690A2 (pt) 2020-11-10
JP7222996B2 (ja) 2023-02-15
CN111356526B (zh) 2023-04-18
KR20200086343A (ko) 2020-07-16
KR102730573B1 (ko) 2024-11-18

Similar Documents

Publication Publication Date Title
EP3710158A1 (fr) Catalyseur scr
EP2091635B1 (fr) Catalyseur sans vanadium pour la réduction sélective et procède de son production
EP3074126B1 (fr) Catalyseur rcs et procédés pour diminuer d'émission de nox
EP2718011B1 (fr) Procédé pour la réduction catalytique sélective d'oxydes d'azote dans les gaz d'échappement de moteurs diesel
EP3710157A1 (fr) Catalyseur scr
EP2116293A1 (fr) Système de nettoyage de gaz d'échappement destiné au traitement de gaz d'échappement de moteur à l'aide d'un catalyseur SCR
DE112011103996T5 (de) Metall-enthaltender Zeolithkatalysator
EP1399246A1 (fr) Catalyseur redox pour la reduction catalytique selective et procede de fabrication dudit catalyseur
WO2012065933A1 (fr) Catalyseur destiné à supprimer les oxydes d'azote contenus dans les gaz d'échappement de moteurs diesel
EP3558494A1 (fr) Dispositif de catalyseur pour réduction catalytique (scr) contenant de l'oxyde de vanadium et un tamis moléculaire renfermant du fer
EP3558493A1 (fr) Dispositif catalyseur rcs comprenant de l'oxyde de vanadium et un tamis moléculaire contenant du fer
EP3623047A1 (fr) Catalyseur de réduction d'oxydes d'azote
EP3695902B1 (fr) Catalyseur destiné à la réduction d'oxydes d'azote
DE102014110937A1 (de) Verwendung eines Katalysatormaterials für die selektive katalytische Reduktion, Katalysatorfilter und Verfahren zu dessen Herstellung
DE102014113786A1 (de) Verfahren zur Herstellung eines Wolfram-haltigen Katalysators
DE102014113784A1 (de) Verfahren zur Herstellung eines Vanadium-haltigen Katalysators

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200615

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210526