CS273192B2 - Method of catalyst production for nitrogen oxide removal from waste gases,resistant to arsenic deactivation - Google Patents

Method of catalyst production for nitrogen oxide removal from waste gases,resistant to arsenic deactivation Download PDF

Info

Publication number: CS273192B2
Authority: CS; Czechoslovakia
Prior art keywords: catalyst; molybdenum; vanadium; impregnated; compound
Prior art date: 1987-10-28

Application number

CS711388A

Other languages

Czech (cs)

English (en)

Other versions

CS711388A2 (en

Inventor

Alfred Dr Kaizik

Franz-Josef Immendorf

Hans-Ulrich Dr Hog

Bernd Dr Nowitzki

Original Assignee

Huels Chemische Werke Ag

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.)

1987-10-28

Filing date

1988-10-27

Publication date

1991-03-12

1988-10-27 Application filed by Huels Chemische Werke Ag filed Critical Huels Chemische Werke Ag

1990-06-13 Publication of CS711388A2 publication Critical patent/CS711388A2/cs

1991-03-12 Publication of CS273192B2 publication Critical patent/CS273192B2/cs

Links

239000003054 catalyst Substances 0.000 title claims description 122
238000000034 method Methods 0.000 title claims description 29
MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 27
229910052785 arsenic Inorganic materials 0.000 title claims description 18
RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims description 18
230000009849 deactivation Effects 0.000 title claims description 15
239000002912 waste gas Substances 0.000 title claims description 6
238000004519 manufacturing process Methods 0.000 title description 8
GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 41
238000005470 impregnation Methods 0.000 claims description 35
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 30
229910052750 molybdenum Inorganic materials 0.000 claims description 30
239000011733 molybdenum Substances 0.000 claims description 30
PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 22
229910000476 molybdenum oxide Inorganic materials 0.000 claims description 21
150000003682 vanadium compounds Chemical class 0.000 claims description 19
229910052720 vanadium Inorganic materials 0.000 claims description 16
229910052721 tungsten Inorganic materials 0.000 claims description 15
239000010937 tungsten Substances 0.000 claims description 15
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 14
238000001354 calcination Methods 0.000 claims description 13
OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 12
239000005078 molybdenum compound Substances 0.000 claims description 10
150000002752 molybdenum compounds Chemical class 0.000 claims description 10
150000003658 tungsten compounds Chemical class 0.000 claims description 8
XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims description 5
150000001875 compounds Chemical class 0.000 claims description 5
229910001935 vanadium oxide Inorganic materials 0.000 claims description 5
239000011230 binding agent Substances 0.000 claims description 3
238000002360 preparation method Methods 0.000 claims 1
GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 1
239000000243 solution Substances 0.000 description 23
241000264877 Hippospongia communis Species 0.000 description 18
JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 16
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 15
239000004408 titanium dioxide Substances 0.000 description 13
GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 12
230000000694 effects Effects 0.000 description 12
QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 12
229910001930 tungsten oxide Inorganic materials 0.000 description 10
238000001035 drying Methods 0.000 description 8
239000000203 mixture Substances 0.000 description 8
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
239000007789 gas Substances 0.000 description 7
MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 description 6
239000003365 glass fiber Substances 0.000 description 5
239000007788 liquid Substances 0.000 description 5
239000000463 material Substances 0.000 description 5
239000000126 substance Substances 0.000 description 5
238000012360 testing method Methods 0.000 description 5
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
239000002253 acid Substances 0.000 description 4
TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
238000006243 chemical reaction Methods 0.000 description 4
238000012545 processing Methods 0.000 description 4
238000002791 soaking Methods 0.000 description 4
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
238000004458 analytical method Methods 0.000 description 3
230000003197 catalytic effect Effects 0.000 description 3
239000004927 clay Substances 0.000 description 3
238000002485 combustion reaction Methods 0.000 description 3
239000003546 flue gas Substances 0.000 description 3
239000000499 gel Substances 0.000 description 3
238000000465 moulding Methods 0.000 description 3
OGUCKKLSDGRKSH-UHFFFAOYSA-N oxalic acid oxovanadium Chemical compound [V].[O].C(C(=O)O)(=O)O OGUCKKLSDGRKSH-UHFFFAOYSA-N 0.000 description 3
239000000377 silicon dioxide Substances 0.000 description 3
150000003467 sulfuric acid derivatives Chemical class 0.000 description 3
238000004876 x-ray fluorescence Methods 0.000 description 3
HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 description 2
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
QUEDYRXQWSDKKG-UHFFFAOYSA-M [O-2].[O-2].[V+5].[OH-] Chemical compound [O-2].[O-2].[V+5].[OH-] QUEDYRXQWSDKKG-UHFFFAOYSA-M 0.000 description 2
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
239000007864 aqueous solution Substances 0.000 description 2
150000001495 arsenic compounds Chemical class 0.000 description 2
GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 2
UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
238000006555 catalytic reaction Methods 0.000 description 2
238000000975 co-precipitation Methods 0.000 description 2
238000007598 dipping method Methods 0.000 description 2
238000002474 experimental method Methods 0.000 description 2
239000000835 fiber Substances 0.000 description 2
229940093920 gynecological arsenic compound Drugs 0.000 description 2
230000002779 inactivation Effects 0.000 description 2
238000009434 installation Methods 0.000 description 2
235000006408 oxalic acid Nutrition 0.000 description 2
239000000843 powder Substances 0.000 description 2
239000002243 precursor Substances 0.000 description 2
235000012239 silicon dioxide Nutrition 0.000 description 2
239000007858 starting material Substances 0.000 description 2
AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
229910015667 MoO4 Inorganic materials 0.000 description 1
JQVKBXQAVHJYSP-UHFFFAOYSA-N N.[Mo+4].[Mo+4] Chemical compound N.[Mo+4].[Mo+4] JQVKBXQAVHJYSP-UHFFFAOYSA-N 0.000 description 1
MJICGUWCFCHYPN-UHFFFAOYSA-N N.[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4] Chemical compound N.[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4].[Mo+4] MJICGUWCFCHYPN-UHFFFAOYSA-N 0.000 description 1
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
239000006057 Non-nutritive feed additive Substances 0.000 description 1
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
238000010306 acid treatment Methods 0.000 description 1
239000004480 active ingredient Substances 0.000 description 1
239000000654 additive Substances 0.000 description 1
150000001298 alcohols Chemical class 0.000 description 1
229910000323 aluminium silicate Inorganic materials 0.000 description 1
229910021529 ammonia Inorganic materials 0.000 description 1
XUFUCDNVOXXQQC-UHFFFAOYSA-L azane;hydroxy-(hydroxy(dioxo)molybdenio)oxy-dioxomolybdenum Chemical compound N.N.O[Mo](=O)(=O)O[Mo](O)(=O)=O XUFUCDNVOXXQQC-UHFFFAOYSA-L 0.000 description 1
159000000009 barium salts Chemical class 0.000 description 1
238000003490 calendering Methods 0.000 description 1
229910052799 carbon Inorganic materials 0.000 description 1
238000010531 catalytic reduction reaction Methods 0.000 description 1
239000000919 ceramic Substances 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
229910052570 clay Inorganic materials 0.000 description 1
239000003245 coal Substances 0.000 description 1
229910052681 coesite Inorganic materials 0.000 description 1
238000007906 compression Methods 0.000 description 1
230000006835 compression Effects 0.000 description 1
238000012937 correction Methods 0.000 description 1
229910052906 cristobalite Inorganic materials 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000000151 deposition Methods 0.000 description 1
238000009826 distribution Methods 0.000 description 1
238000011156 evaluation Methods 0.000 description 1
238000001125 extrusion Methods 0.000 description 1
239000002657 fibrous material Substances 0.000 description 1
238000001914 filtration Methods 0.000 description 1
239000012530 fluid Substances 0.000 description 1
239000011521 glass Substances 0.000 description 1
238000000227 grinding Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
238000004898 kneading Methods 0.000 description 1
238000011068 loading method Methods 0.000 description 1
230000007774 longterm Effects 0.000 description 1
238000002844 melting Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
229920000609 methyl cellulose Polymers 0.000 description 1
239000001923 methylcellulose Substances 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
239000003921 oil Substances 0.000 description 1
239000008188 pellet Substances 0.000 description 1
238000005453 pelletization Methods 0.000 description 1
229920000233 poly(alkylene oxides) Polymers 0.000 description 1
239000011148 porous material Substances 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
238000005096 rolling process Methods 0.000 description 1
150000003839 salts Chemical class 0.000 description 1
RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
239000002002 slurry Substances 0.000 description 1
239000008279 sol Substances 0.000 description 1
239000002904 solvent Substances 0.000 description 1
238000001179 sorption measurement Methods 0.000 description 1
239000007921 spray Substances 0.000 description 1
238000005507 spraying Methods 0.000 description 1
238000003756 stirring Methods 0.000 description 1
229910052682 stishovite Inorganic materials 0.000 description 1
239000000725 suspension Substances 0.000 description 1
239000003053 toxin Substances 0.000 description 1
231100000765 toxin Toxicity 0.000 description 1
229910052905 tridymite Inorganic materials 0.000 description 1
229910052722 tritium Inorganic materials 0.000 description 1
238000009827 uniform distribution Methods 0.000 description 1
239000006200 vaporizer Substances 0.000 description 1
238000005406 washing Methods 0.000 description 1
239000001993 wax Substances 0.000 description 1

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
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
- 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

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Environmental & Geological Engineering (AREA)
Organic Chemistry (AREA)
Materials Engineering (AREA)
Biomedical Technology (AREA)
Oil, Petroleum & Natural Gas (AREA)
General Chemical & Material Sciences (AREA)
Analytical Chemistry (AREA)
Health & Medical Sciences (AREA)
Catalysts (AREA)
Exhaust Gas Treatment By Means Of Catalyst (AREA)

CS711388A 1987-10-28 1988-10-27 Method of catalyst production for nitrogen oxide removal from waste gases,resistant to arsenic deactivation CS273192B2 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19873736478 DE3736478A1 (de)	1987-10-28	1987-10-28	Verfahren zur herstellung eines gegen arsenvergiftung resistenten katalysators zur entfernung von stickoxiden aus abgasen

Publications (2)

Publication Number	Publication Date
CS711388A2 CS711388A2 (en)	1990-06-13
CS273192B2 true CS273192B2 (en)	1991-03-12

Family

ID=6339249

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CS711388A CS273192B2 (en)	1987-10-28	1988-10-27	Method of catalyst production for nitrogen oxide removal from waste gases,resistant to arsenic deactivation

Country Status (4)

Country	Link
EP (1)	EP0313755A3 (fr)
CS (1)	CS273192B2 (fr)
DD (1)	DD283340A5 (fr)
DE (1)	DE3736478A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE59010465D1 (de) *	1989-06-21	1996-10-02	Siemens Ag	Arsenresistenter Mischoxidkatalysator
DK0762925T3 (da) *	1994-05-30	2000-03-20	Siemens Ag	Katalysator til nitrogenoxid-reduktion i et strømningsmedium og fremgangsmåde til dens fremstilling
DE4431788A1 (de)	1994-09-07	1996-03-14	Huels Chemische Werke Ag	Katalysator und Verfahren zur Zersetzung von HCN in Gasen
DE69619327T2 (de)	1995-10-09	2002-07-18	Shell Internationale Research Maatschappij B.V., Den Haag/S'gravenhage	Katalysator und Verfahren zur Umwandlung von Stickstoffoxiden
DE19921207A1 (de) *	1999-05-07	2000-11-16	Siemens Ag	Verfahren zur Herstellung einer katalytisch aktiven Masse, Katalysator mit einer derart hergestellten katalytisch aktiven Masse sowie Verwendung des Katalysators zum Abbau von Dioxinen und/oder Furanen
FR2830466B1 (fr) †	2001-10-09	2004-02-06	Axens	Utilisation d'une composition a base de ti02 comme catalyseur pour realiser l'hydrolyse des cos et/ou d'hcn dans un melange gazeux
PL1797954T3 (pl) *	2005-12-16	2011-07-29	Steag Energy Services Gmbh	Sposób obróbki katalizatorów gazów spalinowych
CN101444727B (zh) *	2008-12-17	2011-02-02	中材高新材料股份有限公司	用于scr烟气脱硝的整体式蜂窝催化剂的制备方法
DE102015102484A1 (de)	2014-02-21	2015-08-27	Sachtleben Chemie Gmbh	Katalysatorprecursormaterial auf TiO2-Basis, dessen Herstellung und dessen Verwendung
CN106732709B (zh) *	2016-11-15	2019-06-25	河南康宁特环保科技股份有限公司	一种波纹板式脱硝催化剂的制备工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2301299A1 (fr) *	1974-12-02	1976-09-17	Mitsubishi Chem Ind	Procede de preparation d'un support conforme en oxyde de titane
DE2846476C3 (de) *	1977-10-26	1982-01-21	Babcock-Hitachi K.K., Tokyo	Titandioxid enthaltendes Sinterprodukt und Verfahren zum Sintern von pulverförmigem Titandioxid
JPS6090043A (ja) *	1983-10-21	1985-05-21	Nippon Shokubai Kagaku Kogyo Co Ltd	窒素酸化物浄化用触媒
EP0214085B1 (fr) *	1985-08-19	1992-04-08	Mitsubishi Jukogyo Kabushiki Kaisha	Procédé pour préparer un catalyseur pour éliminer des oxydes d'azote

1987
- 1987-10-28 DE DE19873736478 patent/DE3736478A1/de not_active Withdrawn
1988
- 1988-08-25 EP EP88113820A patent/EP0313755A3/fr not_active Withdrawn
- 1988-10-26 DD DD32110488A patent/DD283340A5/de not_active IP Right Cessation
- 1988-10-27 CS CS711388A patent/CS273192B2/cs unknown

Also Published As

Publication number	Publication date
DE3736478A1 (de)	1989-05-11
EP0313755A3 (fr)	1990-01-17
EP0313755A2 (fr)	1989-05-03
CS711388A2 (en)	1990-06-13
DD283340A5 (de)	1990-10-10

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US4798813A (en)	1989-01-17	Catalyst for removing nitrogen oxide and process for producing the catalyst
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DE3780545T3 (de)	1997-05-15	Ein Katalysator und ein Verfahren, Stickoxyde in Abgasen zu entsticken.
CS273192B2 (en)	1991-03-12	Method of catalyst production for nitrogen oxide removal from waste gases,resistant to arsenic deactivation
DK173389B1 (da)	2000-09-18	Katalysator til fjernelse af nitrogenoxider
KR100314758B1 (ko)	2001-11-15	배기가스에 함유된 질소산화물 제거용 오산화바나듐계 촉매 및그 제조방법
DE69009264T3 (de)	1998-03-19	Verfahren zur Reinigung von Abgasen und dafür geeigneter geformter Katalysator.
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