Structure sensitive dissociation of CH4 on Ni/alpha-Al2O3: Ni nano-scale particles linearly compensate the E-a and ln A for the CH4 pulse kinetics
文献类型：期刊论文
| 作者 | Cui, YH; Xu, HY; Ge, QJ; Wang, YZ; Hou, SF; Li, WZ |
| 刊名 | journal of molecular catalysis a-chemical
 |
| 出版日期 | 2006-04-18 |
| 卷号 | 249期号:1-2页码:53-59 |
| 关键词 | CH4 dissociation Ni/alpha-Al2O3 pulse kinetic structure sensitive compensation effect Ni nano particle |
| 英文摘要 | the intrinsic kinetic information for the dissociation of ch4 on the fresh ni active sites was studied by pulsing ch4 through ni/alpha-al2o3 catalyst with different ni particles. after the elimination of the mass and heat transfer, the conversions of ch4 were controlled far below the values of the thermodynamic equilibrium in order to keep the pulse reaction in the kinetic region. the coverage degree of carbon species on ni active site is kept less than 1 to eliminate the influence of carbon deposition on the dissociation of ch4. the plot of tofch4 versus the ni particle size exhibits a "mountain" shape. the ea and in a for the ch4 dissociation are linearly increased with the increase in the ni particle size, showing the compensation effect in the ch4 dissociation. this work reveals that the ch4 dissociation on fresh ni active site of ni particles in ni/alpha-al2o3 catalysts is a structure sensitive reaction. (c) 2006 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | heterogeneous catalysis ; methane decomposition ; nickel-catalysts ; carbon formation ; in-situ ; hydrogen ; cracking ; ni(111) ; metals ; size |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000237173500008 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/139992]  |
| 专题 | 大连化学物理研究所_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 |
| 推荐引用方式 GB/T 7714 | Cui, YH,Xu, HY,Ge, QJ,et al. Structure sensitive dissociation of CH4 on Ni/alpha-Al2O3: Ni nano-scale particles linearly compensate the E-a and ln A for the CH4 pulse kinetics[J]. journal of molecular catalysis a-chemical,2006,249(1-2):53-59. |
| APA | Cui, YH,Xu, HY,Ge, QJ,Wang, YZ,Hou, SF,&Li, WZ.(2006).Structure sensitive dissociation of CH4 on Ni/alpha-Al2O3: Ni nano-scale particles linearly compensate the E-a and ln A for the CH4 pulse kinetics.journal of molecular catalysis a-chemical,249(1-2),53-59. |
| MLA | Cui, YH,et al."Structure sensitive dissociation of CH4 on Ni/alpha-Al2O3: Ni nano-scale particles linearly compensate the E-a and ln A for the CH4 pulse kinetics".journal of molecular catalysis a-chemical 249.1-2(2006):53-59. |
入库方式： OAI收割
来源：大连化学物理研究所
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