Method for manufacture of silver catalyst for production of ethy

Details Method for manufacture of silver catalyst for production of ethy Method for manufacture of silver catalyst for production of ethy

1981-12-17

1983-06-21

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252476, B01J 2304, B01J 2308, B01J 2350

Patent

active

043893384

ABSTRACT:
In a method for the manufacture of a silver catalyst having silver deposited on a porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium to be used for the production of ethylene oxide, the improvement comprising the steps of depositing silver on the porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium thereby preparing an activated silver catalyst and subsequently subjecting said silver catalyst to a high-temperature treatment at a temperature in the range of 550.degree. to 950.degree. C. in an inert gaseous atmosphere having an oxygen concentration of not more than 3 volume percent in the final step.

REFERENCES:
patent: 3962136 (1976-06-01), Nielsen et al.
patent: 4033903 (1977-07-01), Maxwell
patent: 4066575 (1978-01-01), Winnick
patent: 4212772 (1980-07-01), Mross et al.
patent: 4267073 (1981-05-01), Nielsen et al.

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