Basicities and transesterification activities of Zn-Al hydrotalcites-derived solid bases

	Basicities and transesterification activities of Zn-Al hydrotalcites-derived solid bases
	Liu, Qianhe 1,2; Wang, Bingchun 1; Wang, Congxin 1; Tian, Zhijian 1,3; Qu, Wei 1; Ma, Huaijun 1; Xu, Renshun 1
刊名	green chemistry
	2014
卷号	16 期号:5 页码:2604-2613
英文摘要	solid bases were prepared by calcining as-prepared zn-al hydrotalcites at different temperatures. the evolutions of their structure and basicity were characterised using x-ray diffraction, thermogravimetric analysis, infrared spectroscopy of co2 adsorption and temperature programmed desorption of methanol. with an increase in the calcination temperature, the as-prepared zn-al hydrotalcites were firstly converted into dehydrated zn-al hydrotalcites and next converted into zn-al oxides. the basic sites of these solid bases changed from oh groups to mn+- o2- (m = zn or al) pairs and isolated o2- ions. these solid bases were evaluated in transesterification reactions used for biodiesel production. the dehydrated zn-al hydrotalcites obtained at 473 k exhibit the highest activity, with a biodiesel yield of approximately 76% at 413 k, 1.7 mpa and 1.0 h(-1). this catalyst exhibits no deactivation after about 150 h. the structure-reactivity relationship of the catalyst is also discussed.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	layered double hydroxides ; biodiesel production ; aldol condensation ; catalysts ; adsorption ; oxides ; reactivity ; sites ; decomposition ; methanol
收录类别	SCI
语种	英语
WOS记录号	WOS:000335005200032
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145557]
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	1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qianhe,Wang, Bingchun,Wang, Congxin,et al. Basicities and transesterification activities of Zn-Al hydrotalcites-derived solid bases[J]. green chemistry,2014,16(5):2604-2613.
APA	Liu, Qianhe.,Wang, Bingchun.,Wang, Congxin.,Tian, Zhijian.,Qu, Wei.,...&Xu, Renshun.(2014).Basicities and transesterification activities of Zn-Al hydrotalcites-derived solid bases.green chemistry,16(5),2604-2613.
MLA	Liu, Qianhe,et al."Basicities and transesterification activities of Zn-Al hydrotalcites-derived solid bases".green chemistry 16.5(2014):2604-2613.