Unique catalysis of Ni-Al hydrotalcite derived catalyst in CO2 methanation: cooperative effect between Ni nanoparticles and a basic support

	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
刊名	journal of energy chemistry
	2014-09-01
卷号	23 期号:5 页码:587-592
关键词	CO2 methanation hydrotalcite Ni/Al2O3 basic support Ni-O-Al
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000342966300006
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145803]
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	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	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.