中文摘要：

以不同官能化碳纳米管(原始MCN、氨基化AMCN和石墨化GMCN等)作为载体,通过浸渍法制备了Ru/CNTs催化剂,并应用于山梨醇氢解制1,2-丙二醇和乙二醇反应中。利用XRD、HRTEM、XPS和ICP-AES等方法对催化剂进行了表征,考察了官能团性质、碱助剂等因素对山梨醇氢解性能的影响。结果表明,与Ru/MCN或Ru/GMCN相比较,Ru/AMCN催化剂对山梨醇氢解有更高的活性,在205℃、5.0 MPa氢压条件下,以Ca(OH)2为添加剂,山梨醇的转化率可达99.5%,1,2-丙二醇(1,2-PD)和乙二醇(EG)的总产率为47.7%。催化剂重复利用五次,催化活性无明显下降。

英文摘要：

Ruthenium catalysts supported on carbon nanotubes with different functional groups ( MCN, AMCN and GMCN ) were prepared by incipient wetness impregnation with ultrasonic-assistance and used for the hydrogenolysis of sorbitol. The catalysts were characterized by X-ray diffraction ( XRD ) , HRTEM, X-ray photoelectron spectroscopy ( XPS) and ICP-AES. The effects of functional group species, and base additives on the catalytic performance of Ru/CNTs in the sorbitol hydrogenolysis reaction were investigated. Nearly 99. 5%of sorbitol conversion and 47 . 7% total yield of ethylene glycol and 1 , 2-propanediol ( 1 , 2-PD ) could be achieved over Ru/AMCN under mild reaction conditions (205℃, 5. 0 MPa), using Ca(OH)2 as additive. The conversion of sorbitol and the selectivity to ethylene glycol ( EG ) and 1 , 2-propanediol ( 1 , 2-PD ) did not decrease over the five repeated runs, which confirmed that the Ru/AMCN catalyst exhibited high stability in the aqueous hydrogenolysis of sorbitol to glycols.