| 摘要 |
1. Catalysts for the synthesis of ethylene oxide by oxidation of ethylene, in the vapour phase by means of oxygen or a gaseous mixture containing oxygen, said catalysts being prepared by the impregnation of refractory supports with organometallic silver compounds and thermal treatment of the product obtained so as to free the metallic silver, characterised by the use, as organometallic compounds of complexes of silver salts with heterocyclic groups containing three carbon atoms, one oxygen atom and one nitrogen atom, selected from the group consisting of oxazole, 2-oxazoline, 3-oxazoline, isoxazole, 2-isoxazoline and the derivatives thereof substituted at the carbon by one or more alkyl groups having from 1 to 10 carbon atoms and/or by one or more phenyl groups. |
