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题名: Preparation, characterization and activities of the nano-sized Ni/SBA-15 catalyst for producing COx-free hydrogen from ammonia
作者: Liu, Hongchao1, 2;  Wang, Hua1;  Shen, Jianghan1, 2;  Sun, Ying1, 2;  Liu, Zhongmin1
关键词: deposition-precipitation method ;  Ni/SBA-15 ;  COx-free hydrogen ;  ammonia decomposition
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2008-03-25
DOI: 10.1016/j.apcata.2007.12.006
卷: 337, 期:2, 页:138-147
收录类别: SCI
文章类型: Article
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
英文摘要: Ni/SBA-15 catalysts that are used in ammonia decomposition to produce COx-free hydrogen were prepared by a deposition-precipitation (DP) method and investigated by N-2 adsorption/desorption, XRD, TEM and H-2-TPR techniques. The results show that not only the nano-sized nickel particles with narrow distribution could be obtained, but also the ordered mesostructures of the Ni/SBA-15. catalysts could be achieved during the preparation process. The amount of formed nickel phyllosilicate increases with prolonging the DP time, while surface areas and pore sizes of samples decrease relatively. These Ni/SBA-15 catalysts exhibit higher performance than other Ni-based catalysts and even some supported Ru catalysts. Ammonia conversion is more than 96% at 873 K with GHSV(NH3) of 46,000 ml/h g-cat. Additionally, the Ni/SBA-15 catalyst is very stable during catalytic evaluation operation due to the strong interactions between nickel grains and SBA-15 support. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: TEMPERATURE-PROGRAMMED-REDUCTION ;  FUEL-CELL APPLICATIONS ;  DEPOSITION-PRECIPITATION ;  OXIDATIVE DEHYDROGENATION ;  SUPPORTED CATALYSTS ;  NH3 DECOMPOSITION ;  NI(II) PHASE ;  NICKEL-OXIDE ;  SILICA ;  GENERATION
语种: 英语
WOS记录号: WOS:000255618800004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140865
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.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Liu, Hongchao,Wang, Hua,Shen, Jianghan,et al. Preparation, characterization and activities of the nano-sized Ni/SBA-15 catalyst for producing COx-free hydrogen from ammonia[J]. APPLIED CATALYSIS A-GENERAL,2008,337(2):138-147.
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