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Influences of Zn on active state of Sn in Pt-Sn/gamma-Al2O3 catalysts and propane dehydrogenation
Yu Chang-Lin; Xu Heng-Yong; Ge Qing-Jie; Li Wen-Zhao
关键词Propane Dehydrogenation Zinc PlaTinum And Tin Temperature-programmed Reduction Temperature-programmed Electronic Conductivity
刊名CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
2006-08-10
27期:8页:1492-1495
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]TIN REFORMING CATALYSTS ; PTSN CATALYSTS ; PLATINUM ; SELECTIVITY
英文摘要The effect of Zn addition to Pt-Sn/gamma-Al2O3 catalyst on the activity and selectivity in the reaction of propane dehydrogenation was studied. The results show that the addition of Zn to Pt-Sn/gamma-Al2O3 catalyst can greatly improve the performance of Pt-Sn/gamma-Al2O1 for propane dehydrogenation. The initial conversion of propane increased from 34% to 42% and initial selectivity to propene increased from 80% to 98%. At the same time, the presence of Zn greatly reduced the deactivation rate. The studies of temperature-programmed reduction of hydrogen( H-2-TPR) and temperature-programmed electronic conductivity (TPEC) show that the addition, of Zn to Pt-Sn/gamma-Al2O3 made the reduction of Sri become more difficult. This may suggest that the presence of Zn can stabilize tin promoter in an Active oxidation state and prevent the formation of PtSn alloy in strong reduction atmosphere, which may be responsible for the high stability and selectivity for Pt-Zn-Sn/gamma-Al2O3 catalyst in dehydrogenation..
语种英语
WOS记录号WOS:000239983300025
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140037
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式
GB/T 7714
Yu Chang-Lin,Xu Heng-Yong,Ge Qing-Jie,et al. Influences of Zn on active state of Sn in Pt-Sn/gamma-Al2O3 catalysts and propane dehydrogenation[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2006,27(8):1492-1495.
APA Yu Chang-Lin,Xu Heng-Yong,Ge Qing-Jie,&Li Wen-Zhao.(2006).Influences of Zn on active state of Sn in Pt-Sn/gamma-Al2O3 catalysts and propane dehydrogenation.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,27(8),1492-1495.
MLA Yu Chang-Lin,et al."Influences of Zn on active state of Sn in Pt-Sn/gamma-Al2O3 catalysts and propane dehydrogenation".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 27.8(2006):1492-1495.
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