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Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support
He, Lei; Lin, Qingquan; Liu, Yu; Huang, Yanqiang
关键词Co2 Methanation Hydrotalcite Ni/al2o3 Basic Support Ni-o-al
刊名JOURNAL OF ENERGY CHEMISTRY
2014-09-01
DOI10.1016/S2095-4956(14)60144-3
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
关键词[WOS]LAYERED DOUBLE HYDROXIDES ; RICE HUSK ASH ; CARBON-DIOXIDE ; NI/AL2O3 CATALYSTS ; NICKEL-CATALYSTS ; HYDROGENATION ; ALUMINA ; ADSORPTION ; PRECURSORS ; CONVERSION
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.
语种英语
WOS记录号WOS:000342966300006
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145803
专题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, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
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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.
APA He, Lei,Lin, Qingquan,Liu, Yu,&Huang, Yanqiang.(2014).Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support.JOURNAL OF ENERGY CHEMISTRY,23(5),587-592.
MLA He, Lei,et al."Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support".JOURNAL OF ENERGY CHEMISTRY 23.5(2014):587-592.
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