Patent CA1137065A successfully refreshed from Google Patents.
CA1137065A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Supported silver catalyst for ethylene oxide production
Assignee: Huels AG
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Filing: 1980-06-25
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Granted: 1982-12-07
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Expires: 2000-06-25
Abstract
Abstract A B S T R A C T A method is described for increasing the activity and extending the life of supported silver-catalysts, as used in producing ethylene oxide with oxygen or oxygen containing gases. The method employs the aid of promotor metals known per se, use being made of an intimate mixture consisting of a silver-carrier-catalyst and promotor-metal compounds of suitable shape or a carrier material containing only the desired promotor-metal compounds.
Inventors
- 👤 Erwin Vangermain
- 👤 Claus-Dieter Mengler
- 👤 Rainer Elm
- 👤 Horst Ueberschaer
- 👤 Wilhelm Brauckmann
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-23 11:00
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/04; C07D301/08; C07D301/10; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/90; B01J23/96; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y02P20/584
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
A method for increasing the activity and extending the life of sup-ported silver catalysts for the production of ethylene-oxide by oxidizing ethyl-ene with oxygen or with gases containing oxygen, while maintaining high selec-tivity of the catalysts, which comprises employing as catalyst an intimate mixture of a supported silver catalyst and a promotor-metal compound of suit-able external shape, or employing a carrier containing only the desired pro-motor-metal compound.
Claim 2
Independent Claim
67 words
A method for increasing the activity and extending the life of sup-ported silver catalysts for the production of ethylene-oxide by oxidizing ethyl-ene with oxygen or with gases containing oxygen, while maintaining high selec-tivity of the catalysts, which comprises employing as catalyst an intimate mixture of a supported silver catalyst and a promotor-metal compound of suit-able external shape, or employing a carrier containing only the desired pro-motor-metal compound.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein the volume of promotor-metal compounds, or of the carrier containing the promotor-metal compounds, based on the total mixture, amounts to from 0.5 to 25%.
Claim 4
Dependent Claim
21 words
A method according to claim 1 or 2, wherein the promotor-metal com-pounds used are compounds of potassium, rubidium, caesium and/or barium.
References Cited (Backward Citations)
No citation records indexed.
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