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题名: Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support
作者: He, Lei1;  Lin, Qingquan1;  Liu, Yu1;  Huang, Yanqiang1
关键词: CO2 methanation ;  hydrotalcite ;  Ni/Al2O3 ;  basic support ;  Ni-O-Al
刊名: JOURNAL OF ENERGY CHEMISTRY
发表日期: 2014-09-01
DOI: 10.1016/S2095-4956(14)60144-3
卷: 23, 期:5, 页:587-592
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: Ni-Al hydrotalcite derived catalyst (Ni-Al2O3-HT) exhibited a narrow Ni particle-size distribution with an average particle size of 4.0 nm. Methanation of CO2 over this catalyst initiated at 225 degrees C and reached 82.5% CO2 conversion with 99.5% CH4 selectivity at 350 degrees C, which was much better than its impregnated counterpart. Characterizations by means of CO2 microcalorimetry and Al-27 NMR indicated that large amount of strong basic sites existed on Ni-Al2O3-HT, originated from the formation of Ni-O-Al structure. The existence of strong basic sites facilitated the activation of CO2 and consequently promoted the activity. The combination of highly dispersed Ni with strong basic support led to its unique and high efficiency for this reaction.
关键词[WOS]: LAYERED DOUBLE HYDROXIDES ;  RICE HUSK ASH ;  CARBON-DIOXIDE ;  NI/AL2O3 CATALYSTS ;  NICKEL-CATALYSTS ;  HYDROGENATION ;  ALUMINA ;  ADSORPTION ;  PRECURSORS ;  CONVERSION
语种: 英语
WOS记录号: WOS:000342966300006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145803
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, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
He, Lei,Lin, Qingquan,Liu, Yu,et al. Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support[J]. JOURNAL OF ENERGY CHEMISTRY,2014,23(5):587-592.
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