Silver-supported epoxidation catalyst and process

Details Silver-supported epoxidation catalyst and process Silver-supported epoxidation catalyst and process

B - Operations, Transporting

01

J

B01J 23/68 (2006.01) B01J 37/02 (2006.01) B01J 37/08 (2006.01) C07D 301/10 (2006.01) C07D 303/04 (2006.01)

Patent

CA 2180153

A catalyst comprising a porous refractory support having deposited thereon a catalytically effective amount of silver, a promoting amount of alkali metal, a promoting amount of rhenium, and a promoting amount of Group IVB metal applied to the support in the form of oxo compound(s). The catalyst is preparable by impregnating the support with solubilized silver and promoters, followed by calcination. The catalyst is intended for the epoxidation of olefins having no allylic hydrogen, in particular ethylene.

Ce catalyseur comprend un support réfractaire poreux sur lequel on a déposé une quantité efficace au plan catalytique d'argent, une quantité promotrice d'un métal alcalin, une quantité promotrice de rhénium, et une quantité promotrice d'un métal du groupe IVB appliquée sous forme de composé(s) oxo. On peut préparer ce catalyseur en imprégnant le support avec de l'argent solubilisé ainsi qu'avec des promoteurs, puis en le calcinant. Ce catalyseur est destiné à l'époxydation des oléfines ne possédant pas d'hydrogène allylique, en particulier l'éthyléne.

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