A HYDROGENATION CATALYST COMPOSITION USEFUL FOR THE HYDROGENATION OF ON OXALATE DIESTER

摘要

A catalyst for hydrogenation of oxalate diester prepd. by (i) contacting Cu-amine complex with colloidal silica-sol in the presence of aq. media at 40-100 deg.C and (ii) redn. of produced Cu-contd. silica-gel with hydrogen stream at 400-800deg.C. The wt. ratio of SiO2 to Cu is 1: Cu 0.001-2 esp. 1:Cu 0.01-1. Ethyleneglycole and/or glycolate ester is prepd. by hydrogenation of oxalate diester i.e. dimethyloxalate, dibutyloxalate in the presence of catalyst.