ES471577A1 - Silver-based catalysts and their use in the preparation of oxide of olefins. - Google Patents

Silver-based catalysts and their use in the preparation of oxide of olefins.

Info

Publication number
ES471577A1
ES471577A1 ES471577A ES471577A ES471577A1 ES 471577 A1 ES471577 A1 ES 471577A1 ES 471577 A ES471577 A ES 471577A ES 471577 A ES471577 A ES 471577A ES 471577 A1 ES471577 A1 ES 471577A1
Authority
ES
Spain
Prior art keywords
particle size
graphite
less
total porosity
silver
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.)
Expired
Application number
ES471577A
Other languages
Spanish (es)
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.)
Produits Chimiques Ugine Kuhlmann
Pechiney SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Publication of ES471577A1 publication Critical patent/ES471577A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D301/00—Preparation of oxiranes
    • C07D301/02—Synthesis of the oxirane ring
    • C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
    • C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
    • C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/48—Silver or gold
    • B01J23/50—Silver
    • 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
    • B01J21/18—Carbon
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/612—Surface area less than 10 m2/g
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/633—Pore volume less than 0.5 ml/g
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/66—Pore distribution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Epoxy Compounds (AREA)

Abstract

1. Catalysts based on silver supported on porous artificial graphite or on porous graphite-containing materials, the catalysts being intended for the vapour phase synthesis of epoxides by reaction of an ethylenic hydrocarbon with oxygen or with gaseous mixtures containing oxygen, characterised in that the graphite-type supports have : a specific surface area of less than 10 m**2 /g, a particle size of 50 mu m to 10 mm, a total porosity volume of between 0.1 and 0.4 cm**3 /g, and a porosity distribution which is such that the pores of diameter less than 6.6 mu m represent at most 60% of the total porosity volume if the particle size of the support is greater than 0.7 mm, and at most 90% of the total porosity volume if the particle size of the support is less than or equal to 0.7 mm.
ES471577A 1977-07-08 1978-07-07 Silver-based catalysts and their use in the preparation of oxide of olefins. Expired ES471577A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721118A FR2396588A1 (en) 1977-07-08 1977-07-08 SILVER BASED CATALYSTS FOR OXIDE PRODUCTION FROM OLEFINS

Publications (1)

Publication Number Publication Date
ES471577A1 true ES471577A1 (en) 1979-10-01

Family

ID=9193164

Family Applications (1)

Application Number Title Priority Date Filing Date
ES471577A Expired ES471577A1 (en) 1977-07-08 1978-07-07 Silver-based catalysts and their use in the preparation of oxide of olefins.

Country Status (9)

Country Link
EP (1) EP0000460B1 (en)
JP (1) JPS5418493A (en)
AT (1) AT363098B (en)
CA (1) CA1110610A (en)
DE (1) DE2861279D1 (en)
DK (1) DK158774C (en)
ES (1) ES471577A1 (en)
FR (1) FR2396588A1 (en)
IT (1) IT1107804B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1009437B (en) * 1988-02-03 1990-09-05 中国石油化工总公司 High-efficiency silver catalyst for oxidizing ethylene into epoxy ethane
JPH09505521A (en) * 1993-11-23 1997-06-03 インスティテュト カタリザ イメニ ゲー．カー．ボレスコバ シビルスコゴ オトデレニア ロシイスコイ アカデミイ ナウク Composite porous material
JP4665448B2 (en) * 2004-07-27 2011-04-06 戸田工業株式会社 Dechlorinating agent

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899445A (en) * 1972-06-01 1975-08-12 Toray Industries Catalyst for oxidation of ethylene to ethylene oxide

Also Published As

Publication number Publication date
JPS6136978B2 (en) 1986-08-21
IT1107804B (en) 1985-12-02
DE2861279D1 (en) 1982-01-14
JPS5418493A (en) 1979-02-10
DK306078A (en) 1979-01-09
FR2396588B1 (en) 1983-01-28
EP0000460A1 (en) 1979-01-24
FR2396588A1 (en) 1979-02-02
AT363098B (en) 1981-07-10
CA1110610A (en) 1981-10-13
ATA494478A (en) 1980-12-15
IT7868356A0 (en) 1978-06-09
DK158774C (en) 1990-12-24
DK158774B (en) 1990-07-16
EP0000460B1 (en) 1981-11-04

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20001204