Process for producing ethanol using hydrogenation catalysts

摘要

The present invention relates to catalysts, to processes for making catalysts and to chemical processes employing such catalysts. The catalysts are preferably used for converting acetic acid to ethanol. The catalyst comprises a precious metal and one or more active metals on a modified support. The modified support may comprise cobalt tungstate.

主权项

1. A process for producing for producing ethanol, comprising contacting a feed stream comprising acetic acid, and/or ethyl acetate, and hydrogen in a reactor at an elevated temperature in the presence of a catalyst under conditions effective to form ethanol, wherein the catalyst comprises a precious metal and one or more active metals on a modified support, wherein the modified support comprises: (i) support material; (ii) a support modifier comprising an oxide of tungsten, molybdenum or vanadium in an amount from 0.1 to 50 wt. %, and (iii) at least one of the one or more active metals.