Effect of Ga Addition on Catalytic Performance of PtSnNa/ZSM-5 Catalyst for Propane Dehydrogenation

查看全文 作　　者：Liu Xuan;Zhou Yuming;Zhang Yiwei;Duan Yongzheng;Xue Mengwei;Wan Lihui (School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189)

出　　处：《China Petroleum Processing & Petrochemical Technology》索引2011年第13卷第4期,共8页

基　　金：supports provided by the Production and Research Prospective Joint Research Project (BY2009153);the Science and Technology Support Program (BE2008129)of jiansu Province of china;the National Natural Science Foundation of China(50873026) 摘　　要：PtSnNaGa/ZSM-5 catalysts with different contents of Ga were prepared and characterized by X-ray diffraction (XRD), nitrogen adsorption, hydrogen chemisorption, ammonia temperature-programmed desorption (NH3-TPD), hydrogen temperature-programmed reduction (H2-TPR), and temperature-programmed oxidation (TPO) techniques. The performances of these catalysts for propane dehydrogenation were investigated. The test results indicated that the addition of Ga not only could improve the catalytic stability and propene selectivity, but also could effectively prevent the catalysts from coking. It was found that the PtSnNaGa(0.5 m%)/ZSM-5 catalyst exhibited the best performance in terms of propene selectivity and propane conversion. The high catalytic performance was most probably attributed to the presence of Ga that could strength- en the interaction between metals and the support to stabilize the catalytic active sites. 关键词：脱氢催化剂丙烷脱氢催化性能 ZSM-5催化剂 NH3-TPD 程序升温脱附程序升温还原程序升温氧化

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Effect of Ga Addition on Catalytic Performance of PtSnNa/ZSM-5 Catalyst for Propane Dehydrogenation

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