Characterizations and activities of the nano-sized Ni/Al2O3 and Ni/La-Al2O3 catalysts for NH3 decomposition
文献类型：期刊论文
| 作者 | Zhang, J; Xu, HY; Jin, XL; Ge, QJ; Li, WZ |
| 刊名 | applied catalysis a-general
 |
| 出版日期 | 2005-08-18 |
| 卷号 | 290期号:1-2页码:87-96 |
| 关键词 | ammonia decomposition nano-sized nickel catalyst lanthanum promotion reduction kinetics hydrogen production |
| 产权排序 | 1;1 |
| 通讯作者 | 徐恒泳 |
| 英文摘要 | a series of nano-sized ni/al2o3 and ni/la-al2o3 catalysts that possess high activities for nh3 decomposition have been successfully synthesized by a coprecipitation method. the catalytic performance was investigated under the atmospheric conditions and a significant enhancement in the activity after the introduction of la was observed. aiming to study the influence of la promoter on the physicochemical properties, we characterized the catalysts by n-2 adsorption/desorption, xrd, h-2-tpr, chemisorption and tem techniques. physisorption results suggested a high specific surface area and xrd spectra showed that nickel particles are in a highly dispersed state. a combination of xrd, tem and chemisorption showed that ni-0 particles with the average size lower, than 5.0 nm are always obtained even though the ni loading ranged widely from 4 to 63 %. compared with the ni/al2o3 catalysts, the ni/la-al2o3 ones with an appropriate amount of promoter enjoy a more open mesoporous structure and higher dispersion of ni. reduction kinetic studies of prepared catalysts were investigated by temperature-programmed reduction (tpr) method and the fact that la additive partially destroyed the metastable ni-al mixed oxide phase was detailed. (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] | cox-free hydrogen ; fuel-cell applications ; ammonia decomposition ; alumina catalysts ; supported nickel ; surface ; chemisorption ; temperature ; generation ; reduction |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000231197500011 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/92363]  |
| 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 | 1.Chinese Acad Sci, Grad Sch, Dalian Inst Chem Phys, Nat Gas Utilizat Appl Catalysis Lab, Dalian 116023, Peoples R China 2.Daqing Petr Co, Inst Res, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, J,Xu, HY,Jin, XL,et al. Characterizations and activities of the nano-sized Ni/Al2O3 and Ni/La-Al2O3 catalysts for NH3 decomposition[J]. applied catalysis a-general,2005,290(1-2):87-96. |
| APA | Zhang, J,Xu, HY,Jin, XL,Ge, QJ,&Li, WZ.(2005).Characterizations and activities of the nano-sized Ni/Al2O3 and Ni/La-Al2O3 catalysts for NH3 decomposition.applied catalysis a-general,290(1-2),87-96. |
| MLA | Zhang, J,et al."Characterizations and activities of the nano-sized Ni/Al2O3 and Ni/La-Al2O3 catalysts for NH3 decomposition".applied catalysis a-general 290.1-2(2005):87-96. |
入库方式： OAI收割
来源：大连化学物理研究所
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