文献类型：期刊文献

英文题名：Promoting effect of Ru in the Pt-Ru/WOx/Al2O3 catalyst for the selective hydrogenolysis of glycerol to 1,3-propanediol

作者：Wen, Yinglin[1];Shen, Weihua[1];Li, Yang[1];Fang, Yunjin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：132

期号：1

起止页码：219

外文期刊名：REACTION KINETICS MECHANISMS AND CATALYSIS

收录：;EI(收录号：20204909563080);WOS:【SCI-EXPANDED(收录号:WOS:000595005300001)】；

基金：This work is supported by the National Natural Science Foundation of China (Project No. 21576083), and supported by Natural Science Basic Research Program of Shaanxi-Shaanxi Coal and Chemical Industry Joint Foundation (Program No.: 2019JLM-20).

语种：英文

外文关键词：Ruthenium; Platinum; Tungsten oxide; 1; 3-propanediol; Glycerol; Hydrogenolysis

摘要：In this paper, the effect of Ru in the catalyst of Pt/WOx/Al2O3 on glycerol hydrogenolysis to 1,3-propanediol was studied. The 1 wt% Ru-added 2Pt/WOx/Al2O3 catalyst with 2 wt% Pt content demonstrated high activity for the hydrogenolysis of glycerol to 1,3-propanediol compared to Pt/WOx/Al2O3. The conversion of glycerol over 2Pt-1Ru/WOx/Al2O3 catalyst was 90.4%, while that of 2Pt/WOx/Al2O3 catalyst was 69.7%. The catalytic activity of 2Pt-1Ru/WOx/Al2O3 was systematically investigated under various reaction conditions, including reaction time, temperature and hydrogen pressure, to optimize the reaction conditions. Based on various characterizations, Pt-Ru particles are finely dispersed on the support of WOx/Al2O3. Compared with the Pt particle size, which was 0.5 to 1.97 nm before and after the catalyst reaction, respectively, the Pt-Ru particle size was 0.67 to 1.37 nm. This phenomenon revealed that the Ru additive could restrain the condensation of metal particles. Meanwhile, it also be found that the Ru additive is favor to the redox cycle of W6+ <-> W5+, enhance the adsorption capability of hydrogen and increase the amount of medium strength acid sites and Bronsted acidic sites in catalyst.