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

作     者：Yongzheng Duan Yuming Zhou Yiwei Zhang Xiaoli Sheng Shijian Zhou Zewu Zhang 

作者机构：School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing 211189JiangshuChina 

出 版 物：《Journal of Natural Gas Chemistry》 (天然气化学杂志（英文版）)

年 卷 期：2012年第21卷第2期

页      面：207-214页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

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) 

主　　题：propane dehydrogenation Pt SBA-15 aluminum modification 

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.