文献类型：期刊文献

英文题名：Study on activity and stability of Pt-Ru/WOx/Al2O3 catalyst in the glycerol selective hydrogenolysis to 1,3-propanediol

作者：Wen, Yinglin[1];Liu, Shiyu[1];Shen, Weihua[1];Fang, Yunjin[1]

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

年份：2023

卷号：210

期号：8

起止页码：1291

外文期刊名：CHEMICAL ENGINEERING COMMUNICATIONS

收录：;EI(收录号：20222412215643);WOS:【SCI-EXPANDED(收录号:WOS:000805704100001)】；

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

语种：英文

外文关键词：Aggregation; glycerol hydrogenolysis; platinum; 1; 3-propanediol; ruthenium; stability

摘要：The deactivation of Pt/WOx/Al2O3 and Pt-Ru/WOx/Al2O3 catalysts in the glycerol hydrogenolysis to 1,3-propanediol (1,3-PDO) was investigated in autoclave. The selectivity of both catalysts toward 1,3-PDO was within 50-56% after the first five usages at 170 degrees C for 12 h with a H-2 pressure of 9 MPa. With Pt/WOx/Al2O3, the conversion of glycerol decreased from 44.3% (1st reaction) to 27.2% (5th reaction), whereas a conversion of 52.4%, 48.0%, and 48.4% was obtained in the 1st, 5th, and 20th reactions, respectively, when Pt-Ru/WOx/Al2O3 was used. The characterizations of the catalysts showed that the pore structure of the catalyst changed because of the crystal structure of the catalyst support changing from gamma-Al2O3 to pseudo-boehmite. However, the changes of the catalyst morphology were not responsible for the catalyst deactivation. Simultaneously, the acidity of catalysts was not shown to be a factor in their deactivation. On the other side, catalysts were not deactivated as a result of the loss of active components. Catalyst deactivation during glycerol hydrogenolysis was finally caused by the aggregation of active metal particles (Pt or Pt-Ru).