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题名: Preparation of novel Ni-Ir/gamma-Al2O3 catalyst via high-frequency cold plasma direct reduction process
作者: Huang, Liqiong1;  Chu, Wei1;  Zhang, Tao2;  Yin, Yongxiang1;  Tao, Xumei1
关键词: high-frequency cold plasma jet ;  Ni-Ir catalyst ;  direct reduction ;  ammonia decomposition ;  hydrogen production
刊名: JOURNAL OF NATURAL GAS CHEMISTRY
发表日期: 2009-03-01
DOI: 10.1016/S1003-9953(08)60082-1
卷: 18, 期:1, 页:35-38
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Energy & Fuels ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Engineering
英文摘要: The novel Ni-Ir/gamma-Al2O3 catalyst, denoted as NIA-P, was prepared by high-frequency cold plasma direct reduction method under ambient conditions without thermal treatment, and the conventional sample, denoted as NIA-CR, was prepared by impregnation, thermal calcination, and then by H-2 reduction method. The effects of reduction methods on the catalysts for ammonia decomposition were studied, and then were characterized by XRD, N-2 adsorption, XPS, and H-2-TPD. It was found that the plasma-reduced NIA-P sample showed a better catalytic performance, over which ammonia conversion was 68.9%, at T= 450 degrees C, P = 1 atm, and GHSV = 30, 000 h(-1). It was 31.7% higher than that of the conventional NIA-CR sample. XRD results showed that the crystallite size decreased for the sample with plasma reduction, and the dispersion of active components was improved. There were more active components on the surface of the NIA-P sample from the XPS results. This effect resulted in the higher activity for decomposition of ammonia. Meanwhile, the plasma process significantly decreased the time of preparing catalyst.
关键词[WOS]: GLOW-DISCHARGE PLASMA ;  FUEL-CELL APPLICATIONS ;  AMMONIA DECOMPOSITION ;  HYDROGEN ;  NI/AL2O3 ;  GENERATION
语种: 英语
WOS记录号: WOS:000265250700006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141502
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Sichuan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Huang, Liqiong,Chu, Wei,Zhang, Tao,et al. Preparation of novel Ni-Ir/gamma-Al2O3 catalyst via high-frequency cold plasma direct reduction process[J]. JOURNAL OF NATURAL GAS CHEMISTRY,2009,18(1):35-38.
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