Influence of Alumina Content on Catalytic Performance of PtSn/Al_2O_3/SBA-15 Catalysts for Propane Dehydrogenation  

作　　者：Zhang Peixin Zhou Yuming Duan Yongzheng Zhang Yiwei Sheng Xiaoli 

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University [2]Geological Survey of Jiangsu Province

出　　处：《China Petroleum Processing & Petrochemical Technology》2012年第4期9-16,共8页中国炼油与石油化工（英文版）

基　　金：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;the Specialized Research Fund for the Doctoral Program of Higher Education of China (20100092120047) for financial supports

摘　　要：The alumina-modified SBA-15 （A12OJSBA-15） zeolite was prepared in a non-aqueous system by using toluene as the solvent, and was used to support the PtSn-based catalyst for propane dehydrogenation. The BET surface area mea- surements, hydrogen chemisorption, FT-IR spectroscopy, NH3-TPD, XPS and TPO techniques were used to characterize the catalysts. Test results showed that the addition of alumina not only could modify the acid function of the support but also the structure of the metallic phase, thus affecting their catalytic properties. Among these catalysts studied, the PtSn/AI203 （5%）/ SBA-15 catalyst exhibited a best catalytic performance in terms of propane conversion and selectivity to propene. The high catalytic performance might be attributed to the relatively good Pt metal dispersion and/or the strong interaction between Pt and Sn species.The alumina-modified SBA-15 (Al2O3/SBA-15) zeolite was prepared in a non-aqueous system by using toluene as the solvent, and was used to support the PtSn-based catalyst for propane dehydrogenation. The BET surface area measurements, hydrogen chemisorption, FT-IR spectroscopy, NH3-TPD, XPS and TPO techniques were used to characterize the catalysts. Test results showed that the addition of alumina not only could modify the acid function of the support but also the structure of the metallic phase, thus affecting their catalytic properties. Among these catalysts studied, the PtSn/Al2O3 (5%)/SBA-15 catalyst exhibited a best catalytic performance in terms of propane conversion and selectivity to propene. The high catalytic performance might be attributed to the relatively good Pt metal dispersion and/or the strong interaction between Pt and Sn species.

关 键 词：SBA- 15 A1203 propane dehydrogenation PROPENE Pt 

分 类 号：O643.32[理学—物理化学]