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Enhanced performance of Ca-doped Pt/gamma-Al2O3 catalyst for cyclohexane dehydrogenation
Yu, Jiafeng1,3; Ge, Qingjie1; Fang, Wen1,3; Xu, Hengyong1,2
关键词Ca Promoter Hydrogen Spillover Pt/al2o3 Coke Resistance Acidity
刊名INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2011-09-01
DOI10.1016/j.ijhydene.2011.06.066
36期:18页:11536-11544
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Electrochemistry ; Energy & Fuels
研究领域[WOS]Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]SPRAY-PULSED CONDITIONS ; HETEROGENEOUS CATALYSIS ; HYDROGEN-PRODUCTION ; PLATINUM CATALYSTS ; NI/AL2O3 CATALYST ; BASIC CATALYSTS ; OXIDE CATALYSTS ; SPILLOVER ; SITES ; STORAGE
英文摘要The promotion effects of Ca on catalytic performance of Ca-doped Pt/Al2O3 catalyst were investigated by varying Ca content and impregnation orders. The Ca-doped Pt/Al2O3 catalyst with atomic rate Ca/Pt = 5 exhibited the highest catalytic activity and stability. Detailed analyses show that low Ca content (Ca/Pt < 5) could not efficiently promote hydrogen spillover from Pt-Al interface to the support and reduce the strong acid sites on the support. However, high Ca content (Ca/Pt > 5) decreases the initial activity due to the coverage of Ca on the support and increases the amount of Pt strongly interacting with Ca, which inhibits Pt reduction. Furthermore, the Ca promotion effect is more pronounced when Ca is added prior to Pt due to surface modification of Ca on Al2O3 support. This modified catalyst possesses more dispersed Pt, lower acidity and larger amount of spilled-over hydrogen. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000294982800005
引用统计
被引频次:10[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/321008/142299
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 Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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Yu, Jiafeng,Ge, Qingjie,Fang, Wen,et al. Enhanced performance of Ca-doped Pt/gamma-Al2O3 catalyst for cyclohexane dehydrogenation[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2011,36(18):11536-11544.
APA Yu, Jiafeng,Ge, Qingjie,Fang, Wen,&Xu, Hengyong.(2011).Enhanced performance of Ca-doped Pt/gamma-Al2O3 catalyst for cyclohexane dehydrogenation.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,36(18),11536-11544.
MLA Yu, Jiafeng,et al."Enhanced performance of Ca-doped Pt/gamma-Al2O3 catalyst for cyclohexane dehydrogenation".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 36.18(2011):11536-11544.
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