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Kinetic study on the CH4/CO2 reforming reaction: Ni-H in Ni/alpha-Al2O3 catalysts greatly improves the initial activity
Cui, YH; Xu, HY; Ge, QJ; Li, WZ
关键词Ni-h Co2 Reforming Of Ch4 Initial Activity Of Reforming Reaction Chx Reaction Activity
刊名JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
2006-01-16
DOI10.1016/j.molcata.2005.08.030
243期:2页:226-232
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]NICKEL-CATALYSTS ; METHANE ; HYDROGEN ; CO2 ; CARBON ; CH4 ; ADSORPTION ; SPILLOVER ; MECHANISM ; SURFACES
英文摘要The Ni-H is proved to be formed in Ni/alpha-Al2O3 Corresponding to the high temperature desorbed H in its H-2-TPD. Ni-H can be generated in Ni/alpha-Al2O3 either by the hydrogen reduction above 500'C or during the in situ CH4/CO2 reforming reaction and it can also be eliminated by the treatment above 900 degrees C. Kinetic experiments show that the activity of the reforming reaction is initially increased with the amount of Ni-H in Ni/alpha-Al2O3 and finally it reaches one constant value due to the in situ regeneration of Ni-H. Pulse results indicate that Ni-H in Ni/alpha-Al2O3 is prone to form CH, species with higher x value, which have higher activity for the reaction With CO2. The catalysts with plentiful Ni-H show higher reaction rate and lower apparent activation energy (77 kJ/mol versus 143 kJ/mol) than those of the catalyst without Ni-H for the pulse of CO2 after CH4. (c) 2005 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000234696800011
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140231
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
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GB/T 7714
Cui, YH,Xu, HY,Ge, QJ,et al. Kinetic study on the CH4/CO2 reforming reaction: Ni-H in Ni/alpha-Al2O3 catalysts greatly improves the initial activity[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2006,243(2):226-232.
APA Cui, YH,Xu, HY,Ge, QJ,&Li, WZ.(2006).Kinetic study on the CH4/CO2 reforming reaction: Ni-H in Ni/alpha-Al2O3 catalysts greatly improves the initial activity.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,243(2),226-232.
MLA Cui, YH,et al."Kinetic study on the CH4/CO2 reforming reaction: Ni-H in Ni/alpha-Al2O3 catalysts greatly improves the initial activity".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 243.2(2006):226-232.
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