Shell Oil Comapny

Otto M Velthuis

Gosse Boxhoorn

Aan Hendrik Klazinga

Willibrord A Van Erp

Ann H Klazinga

Peter J Schoenmakers

A process for the preparation of a silver-containing catalyst suitable for the oxidation of ethylene to ethylene oxide which comprises:

Process for the preparation of a silver-containing ethylene oxide

The invention relates to a process for the preparation of a silver catalyst suitable for the oxidation of ethylene to ethylene oxide, characterized in that a silver compound and, if desired, a promoter are applied to a carrier, after which the silver compound is reduced to metallic silver, and in which process the carrier has been prepared by mixing an aluminum compound with an alkali metal hydroxide and with an organic fluorine compound and by calcining the obtained mixture, to the silver catalysts prepared by means of this process and to the use of the silver catalysts in the preparation of ethylene oxide.

Ethylene oxide catalyst

This invention relates to ethylene oxide catalysts comprising silver, alkali metal promoters supported on a carrier, which carrier is prepared by a process which comprises mixing an aluminum compound with an alkali metal salt and with a silicon compound and calcining resultant mixture at a temperature greater than about 1100.degree. C.

This invention relates to ethylene oxide catalysts comprising silver, alkali metal promoters supported on a carrier, which carrier is prepared by a process which comprises mixing an aluminum compound with a tin compound and calcining resultant mixture at a temperature greater than about 1100.degree. C.

Fine-crystalline silicates are separated by filtration from an aqueous mother liquor which contains at least 30% v of a water-miscible alcohol, ketone, sulphoxide or cyclic ether which, per molecule, contain at most five carbon atoms with a boiling point below 85.degree. C.

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Amsterdam, Netherlands

Otto M Velthuis