Sorbitol Hydrogenolysis to Glycols over Baisic Additive Promoted Ni-based Catalysts  

作　　者：Xiao-feng Cao Qi Zhang Dong Jiang Qi-ying Liu Long-long Ma Tie-jun Wang De-bao Li 

机构地区：[1]State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China [2]CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510540, China [3]University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Journal of Chemical Physics》2015年第3期338-344,I0002,共8页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China （No.51376185 and No.51106108）, the National Basic Research Program of China （No.2012CB215304）, the National High Technology Research and Development Program of China （No.2012AA101806）, and the Natural Science Foundation of Guangdong Province （No.$2013010011612）.

摘　　要：A series of Ni based catalysts with different supports and basic additives were prepared by sequential impregnation method. The catalysts were characterized by XRD, BET, H2-TPR and CO2-TPD techniques. It was found that the introduction of basic additives enhanced the basicities of catalyats and promoted the dispersities of Ni particles by strong interaction between Ni2＋ and basic additives. Among the Ni based catalysts, 10%Ni/10%La203/ZrO2 showed the superior performance in sorbitol hydrogenolysis. The synergistic effect of Ni and La203 was proven to play an essential role in selective synthesis of EG and 1,2-PG. In the optimal reaction condition, the catalyst presented 100% sorbitol conversion and over 48% glycols （EG and 1,2-PG） yield. The kinetics study of polyols （sorbitol, xylitol and glycerol） hydrogenolysis showed that polyols with more hydroxyl number have higher activity and products distribution was final results of kinetic balance, which could give us some inspiration abeut how to change the products selectivity.

关 键 词：Sorbitol hydrogenolysis GLYCOLS Ni catalyst Support Base promoter 

分 类 号：TQ223.166[化学工程—有机化工] TE665.3[石油与天然气工程—油气加工工程]