| 摘要 |
PURPOSE:To obtain a catalyst having high activity and to produce an alcohol with high yield and high quality by carrying out the freeze drying in the process producing for catalyst precursor by using copper oxide or metallic oxide consisting essentially of copper oxide and a carrier. CONSTITUTION:A water soluble copper salt or mixture of a water soluble copper salt and a water soluble zinc salt reacts with an alkaline agent in an aqueous media in the presence of a carrier. When precipitate is washed, dried and burnt and the catalyst precursor is produced, freeze drying is carried out at about -50-0 deg.C and about 0.01-100Torr. Thus, obtained precipitate is kept as particulate state without solidifying to lumpy during washing or drying. Therefore, the highly active catalyst can be obtained, and when the alcohol is produced by hydrogenation of an organic carboxylic ester, high yield and high quality can be attained. |
