PROCESS FOR PRODUCING ETHANOL USING SOLID CATALYSTS

摘要

The present invention relates to a solid catalyst for producing ethanol from acetic acid, ethyl acetate, or mixtures thereof comprising a core region comprising a Group IIA metal and a surface region surrounding the core region and comprising one or more main metals. The total loading of the main metals in the catalyst is greater than or equal to 1 wt.%. Also more than 85% of main metals are located in the surface region, based on the total loading of the main metals in the catalyst. The surface region may comprise two or more layers.