Effect of aluminum modification on catalytic properties of PtSn-based catalysts supported on SBA-15 for propane dehydrogenation

查看全文 作　　者：Yongzheng [1]Duan;Yuming [1]Zhou;Yiwei [1]Zhang;Xiaoli [1]Sheng;Shijian [1]Zhou;Zewu [1]Zhang

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,Jiangshu,China

出　　处：《Journal of Natural Gas Chemistry》索引2012年第21卷第2期,共8页

基　　金：supported by the National Nature Science Foundation of China (50873026, 21106017);the Production and Research Prospective Joint Research Project (BY2009153);the Science and Technology Support Program (BE2008129) of Jiangsu Province of China;Specialized Research Fund for the Doctoral Program of Higher Education of China (20100092120047) 摘　　要：The catalytic properties of PtSn-based catalysts supported on siliceous SBA-15 and Al-modified SBA-15, such as Al-incorporated SBA-15 (AlSBA-15) and alumina-modified SBA-15 (Al2O3/SBA-15), for propane dehydrogenation were investigated. Al2O3/SBA-15 was prepared either by an impregnation method using aluminum nitrate aqueous solution, or by the treatment of SBA-15 with a Al(OC3H7)3 solution in anhydrous toluene. N2-physisorption, FT-IR spectroscopy, solid-state 27Al MAS NMR spectroscopy, hydrogen chemisorption, XRF, NH3 temperature-programmed desorption, X-ray photoelectron spectroscopy and TPO were used to characterize these samples. Among these catalysts, the PtSn-based catalyst supported on Al2O3/SBA-15, which was grafted with Al(OC3H7)3, exhibited the best catalytic performance in terms of activity and stability The possible reason was due to the high Pt metal dispersion and/or the strong interactions among Pt, Sn, and the support. 关键词：SBA-15 丙烷脱氢催化性能氧化铝催化剂改性 X射线光电子能谱 X射线荧光光谱

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Effect of aluminum modification on catalytic properties of PtSn-based catalysts supported on SBA-15 for propane dehydrogenation

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