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题名: Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts
作者: Yu, Changlin;  Ge, Qingjie;  Xu, Hengyong;  Li, Wenzhao
通讯作者: 徐恒泳
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2007-12-05
DOI: 10.1021/ie0704952
卷: 46, 期:25, 页:8722-8728
收录类别: ISTP ;  SCI
文章类型: Article
部门归属: 8
项目归属: 801
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The influences of oxygen addition to catalytic dehydrogenation system on the structure and the dehydrogenation performance of Pt-based catalysts were investigated. The results showed that a small amount of oxygen addition into the reaction system could greatly improve the catalytic performance of Pt-Sn/Ce-gamma-Al2O3 catalyst although it evidently decreased the catalytic stability of Pt/gamma-Al2O3, Pt-Sn/gamma-Al2O3, and Pt/Ce-gamma-Al2O3 catalysts. The addition of a small amount of oxygen can decrease the pressure of hydrogen, eliminate coke, and provide partial heat for catalytic dehydrogenation reaction. Hydrogen chemisorption results indicated that steam could reduce the interactions between metal and support, thus promoting the sintering of platinum particles. That adverse effect of steam on the structure on Pt-Sn/Ce-gamma-Al2O3 was moderate, but it was serious on other Pt-based catalysts due to low-stability platinum particles. Both the promoting effect of Ce on the propane conversion and the inhibiting effect of Sri on the CO, formation could be simultaneously achieved during the reaction over Pt-Sn/Ce-gamma-Al2O3,catalyst. At 546 degrees C, a 50% yield of propylene improvement was obtained due to the small oxygen addition.
关键词[WOS]: HYDROGEN COMBUSTION SHC ;  SUPPORTED PLATINUM ;  CARBON-MONOXIDE ;  PROCESS MODE ;  CHEMISORPTION ;  REDUCTION ;  SPECTROSCOPY ;  PROPENE ;  CERIA ;  CEO2
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000251244900045
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99581
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Grad Sch, Appl Catalysis Lab, Dalian 116023, Peoples R China

Recommended Citation:
Yu, Changlin,Ge, Qingjie,Xu, Hengyong,et al. Influence of oxygen addition on the reaction of propane catalytic dehydrogenation to propylene over modified Pt-based catalysts[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2007,46(25):8722-8728.
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