草酸二甲酯加氢制乙醇的铜基催化剂制备及其工艺研究OA

A series of binary and ternary copper-based catalysts were synthesized via the co-precipitation method for the hydrogenation of DMO(dimethyl oxalate)to ethanol.The results indicate that the Cu/Zr catalyst,with ZrO2 as the support,produces fewer by-products,and the introduction of Fe as a promoter further enhances the catalyst's catalytic performance.The Cu/Fe/Zr catalyst exhibits superior catalytic activity due to its optimal acid strength and quantity,larger specific surface area and higher copper dispersion.The optimal reaction conditions for DMO hydrogenation to ethanol using this catalyst are as follows:reaction temperature of 270℃,pressure of 3.0 MPa,liquid hourly space velocity of 0.3 h-1 and hydrogen-to-ester molar ratio of 150.Under these conditions,the conversion of DMO reaches over 99％,with ethanol selectivity of 97.56％.