文献类型：期刊文献

英文题名：Nickel and nickel-platinum as active and selective catalyst for the maleic anhydride hydrogenation to succinic anhydride

作者：Li, J.[1];Tian, W. P.[1];Wang, X.[1];Shi, L.[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2011

卷号：175

期号：1

起止页码：417

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20114614512279);WOS:【SCI-EXPANDED(收录号:WOS:000297875900050)】；

语种：英文

外文关键词：Al(2)O(3); Maleic anhydride; Pt-Ni; Hydrogenation; Succinic anhydride

摘要：Pt, Ni, Co, Cu and bimetallic Pt-Ni, Pt-Co, Pt-Cu catalysts supported on gamma-Al(2)O(3) have been studied for the hydrogenation maleic anhydride (MA) to succinic anhydride (SA). X-ray diffraction (XRD) and H(2) temperature programmed reduction TPR studies were performed to characterize the catalysts. The flow reactor studies demonstrated that Pt-Ni bimetallic catalyst is highly active and selective for the hydrogenation of MA. Hydrogenation of maleic anhydride produced mainly succinic anhydride and gamma-butyrolactone, and the selectivity toward gamma-butyrolactone increased with pressure. Using Al(2)O(3) as support, it was possible to obtain the highest reaction rate ever obtained with 90% selectivity to SA at 100% conversion. The process appears to be controlled by H(2) dissociation on nickel and the catalytic activity can be further improved, without loss of selectivity, by adding a very small amount of Pt(0.3) to increase the rate of H(2) dissociation. TPR experiments show high-temperature reduction peaks in monometallic Ni catalysts. When Pt is present, the formation of Pt-Ni compound provokes the shift of the reduction peaks and the appearance of new reduction signals. (C) 2011 Elsevier B.V. All rights reserved.