文献类型：期刊文献

英文题名：Gas-phase hydrogenation of maleic anhydride to γ-butyrolactone at atmospheric pressure over Cu-CeO₂-Al₂O₃ catalyst

作者：Yu, Yang[1];Guo, Yanglong[1];Zhan, Wangcheng[1];Guo, Yun[1];Wang, Yanqin[1];Wang, Yunsong[1];Zhang, Zhigang[1];Lu, Guanzhong[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China

年份：2011

卷号：337

期号：1-2

起止页码：77

外文期刊名：JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000288726400012)】；

基金：This project was supported financially by National Basic Research Program of China (2010CB732300) and Program for New Century Excellent Talents in University (NCET-09-0343).

语种：英文

外文关键词：Maleic anhydride; gamma-Butyrolactone; Gas-phase hydrogenation; Cu-CeO2-Al2O3 catalyst; Deactivation

摘要：Cu-CeO2-Al2O3 catalyst, prepared by co-precipitation method, was investigated for the gas-phase hydrogenation of maleic anhydride (MA) to gamma-butyrolactone (GBL) at atmospheric pressure and the catalyst deactivation was also studied. Effects of catalyst composition, reaction temperature, and liquid hourly space velocity (LHSV) of raw material on the catalytic performance of Cu-CeO2-Al2O3 catalyst were investigated. The catalyst (molar ratio of Cu:Ce:Al = 1:1:2) showed better catalytic performance, in which both the conversion of MA and the selectivity of GBL kept 100% within two hours under the reaction conditions of 6 mL catalyst, 0.1 MPa, 220-280 degrees C, 30 mL min(-1) H-2, 0.6h(-1) LHSV of 20 wt.% MA/GBL As for Cu-CeO2-Al2O3 catalyst, smaller crystallite size of Cu and higher Cu surface area are favorable to increase its catalytic performance. The deactivation of Cu-CeO2-Al2O3 catalyst is due to formation of the compact wax-like deposition on the catalyst surface, which is probably ascribed to the strong adsorption of succinic anhydride and then polymerization on the catalyst surface. The catalytic performance of the regenerated catalyst can be recovered completely by the regeneration method of N-2-air-H-2 stage treatment. (C) 2011 Elsevier B.V. All rights reserved.