文献类型：期刊文献

英文题名：Effect of Sn Addition in Gas Phase Hydrogenation of Acetic Acid on Alumina Supported PtSn Catalysts

作者：Zhang, Ke[1];Zhang, Haitao[1];Ma, Hongfang[1];Ying, Weiyong[1];Fang, Dingye[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Engn Res Ctr Large Scale Reactor Engn & Technol, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：144

期号：4

起止页码：691

外文期刊名：CATALYSIS LETTERS

收录：;EI(收录号：20141217485636);WOS:【SCI-EXPANDED(收录号:WOS:000332866400020)】；

基金：This work is financially supported by the National Science and Technology Supporting Plan (2006BAE02B02).

语种：英文

外文关键词：PtSn catalyst; Hydrogenation; Acetic acid; Ethanol

摘要：Alumina supported Pt, Sn and PtSn catalysts were prepared by impregnation and tested in the gas phase hydrogenation of acetic acid, and characterized by N-2-physisorption, XRD, H-2-TPR, H-2-pulse chemisorption, H2TPD, DRIFTS (diffuse reflectance infrared Fourier transform spectroscopy), XPS, electron microscopy techniques (TEM, HRTEM and EDX). Results show that Sn addition to Pt/Al2O3 catalyst can improve the conversion of acetic acid and suppress the production of by-products, as well as enhance the selectivity towards ethanol. The optimization of activity and selectivity can be achieved by changing reaction temperature and pressure. Characterizations indicated that the better performance of PtSn/Al2O3 catalyst is due to the formation of PtSn alloy and Pt-SnOx species.