Kinetic study of NH3 decomposition over Ni nanoparticles: The role of La promoter, structure sensitivity and compensation effect
文献类型：期刊论文
| 作者 | Zhang, J; Xu, HY; Li, WZ |
| 刊名 | applied catalysis a-general
 |
| 出版日期 | 2005-12-12 |
| 卷号 | 296期号:2页码:257-267 |
| 关键词 | reaction kinetics ammonia decomposition nano-sized nickel catalysts lanthanum promotion structure-sensitivity compensation effect |
| 英文摘要 | some nickel nanoparticles supported on alumina were synthesized and tested for ammonia decomposition. steady-state reaction kinetic results reveal that the turnover frequency (tof) increases firstly with decreasing particle size, passes through a maximum in the range of mean size of ni-0 1.8-2.9 nm and then decreases. a structure sensitivity of nh3 decomposition over ni catalysts is strongly suggested. an excellent fit of experimental data by the temkin-pyzhev equation was obtained. a compensation effect between the pre-exponential factor (k(0)) and activation energy (ea) was observed and quantified. moreover, la could partially lower the particle size of ni-0 and reduce the stability of reaction intermediates, which could be the main reason for its positive influence on the specific activity of ni. h-2 temperature-programmed desorption (tpd) and nh3 temperature-programmed surface reaction (tpsr) were used as supplements to study the influence of ni-0 particle size and addition of la on the catalytic behavior. (c) 2005 elsevier b.v. all rights reserved. |
| 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 |
| 关键词[WOS] | fuel-cell applications ; catalytic membrane reactors ; ammonia decomposition ; ruthenium catalysts ; hydrogen-production ; zeolite-x ; platinum ; barium ; activation ; generation |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234076500015 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139826]  |
| 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, Appl Catalysis Lab, Grad Sch, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, J,Xu, HY,Li, WZ. Kinetic study of NH3 decomposition over Ni nanoparticles: The role of La promoter, structure sensitivity and compensation effect[J]. applied catalysis a-general,2005,296(2):257-267. |
| APA | Zhang, J,Xu, HY,&Li, WZ.(2005).Kinetic study of NH3 decomposition over Ni nanoparticles: The role of La promoter, structure sensitivity and compensation effect.applied catalysis a-general,296(2),257-267. |
| MLA | Zhang, J,et al."Kinetic study of NH3 decomposition over Ni nanoparticles: The role of La promoter, structure sensitivity and compensation effect".applied catalysis a-general 296.2(2005):257-267. |
入库方式： OAI收割
来源：大连化学物理研究所
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