钌催化剂对长链脂肪酸酯选择性氢解的研究

Wet impregnation was used for the synthesis of active carbon supported Ni, Pd and Ru catalysts, which were used for the hydrogenolysis of long-chain fatty acid esters. Ru/C was found to be more active under the reaction conditions of 200 oC, hydrogen pressure of 2 MPa and reaction time of 5 h, the conversion of the feed stock which was 22.3% was obtained. Liquid phase reduction method was used for the synthesis of Ru/C for the hydrogenolysis of model compound methyl palmitate, conversion of 99.6% was got. The yields of n-pentadecane and n-hexadecane were 91.2% and 0.6%, respectively. XRD, TEM and SEM were used for the characterization of the catalysts for the further understand of the reaction process, meanwhile, the effects of the reaction temperature, hydrogen pressure, reaction time and the amount of catalyst on the hydrogenolysis of methyl palmitate were investigated.