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题名: Dehydrogenation of long chain paraffins over supported Pt-Sn-K/Al2O3 catalysts: A study of the alumina support effect
作者: He, Songbo1, 2;  Sun, Chenglin1;  Bai, Ziwu3;  Dai, Xihai3;  Wang, Bin3
通讯作者: 孙承林
关键词: Dehydrogenation ;  Long chain paraffins ;  Alumina support effect ;  Pore size distribution ;  Pt-Sn catalysts
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2009-03-01
DOI: 10.1016/j.apcata.2008.12.024
卷: 356, 期:1, 页:88-98
收录类别: SCI
文章类型: Article
部门归属: 9
项目归属: 902
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: The support effect on the Pt-Sn-K/Al2O3 Catalysts for the long chain paraffins dehydrogenation to mono-olefins has been investigated by the test dehydrogenation reaction of n-octadecane. The catalysts were characterized by using different techniques: BET, MIP, XRD, TEM, SEM, CO-chemisorption, H-2-TPR, H-2-TPD, NH3-TPD and TG-DTA. Results show that the pore structure and the surface characteristic of the alumina supports strongly affect the catalytic performance. The support effect can be divided into three parts: (I) the BET and pore size distribution govern the Pt dispersion of the catalysts, resulting in influencing the dehydrogenation activity; (II) the inherent acidity controls the acidity of the catalysts, bringing on the different product selectivity: (III) the pore volume provides the effective capability for carbon deposition, thus changing the lifetime of the catalysts. These functions should be adjusted for the alumina supports to achieve an optimal catalytic performance. The ideal catalysts were selected to test the lifetime of the catalysts on the dehydrogenation of n-C-16-C-19. High activity (the average conversion is 11.6%) and perfect selectivity (the average selectivity is 92%) were exhibited during the reaction time of 960 h. (C) 2009 Published by Elsevier B.V.
关键词[WOS]: PT-SN CATALYSTS ;  NAPHTHA REFORMING CATALYSTS ;  N-BUTANE DEHYDROGENATION ;  PROPANE DEHYDROGENATION ;  PT-SN/AL2O3 CATALYSTS ;  STRUCTURAL-CHARACTERIZATION ;  PT-SN/GAMMA-AL2O3 CATALYST ;  ISOBUTANE DEHYDROGENATION ;  MERCURY POROSIMETRY ;  METAL PRECURSORS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000263981800012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101513
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, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.PetroChina Fushun Petrochem Co, Fushun 113001, Liaoning, Peoples R China

Recommended Citation:
He, Songbo,Sun, Chenglin,Bai, Ziwu,et al. Dehydrogenation of long chain paraffins over supported Pt-Sn-K/Al2O3 catalysts: A study of the alumina support effect[J]. APPLIED CATALYSIS A-GENERAL,2009,356(1):88-98.
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