Kinetics and reusability of Zr/CaO as heterogeneous catalyst for the ethanolysis and methanolysis of Jatropha crucas oil

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	Kinetics and reusability of Zr/CaO as heterogeneous catalyst for the ethanolysis and methanolysis of Jatropha crucas oil
	Kaur, N.
刊名	Fuel Processing Technology
	2014
卷号	119 期号:x 页码:173-184
ISSN号	0378-3820
中文摘要	Zirconium impregnated (5-20 wt.%) calcium oxide (Zr/Ca0) was prepared by a simple wet chemical method followed by calcination up to 900 C. The prepared Zr/CaO was employed as a heterogeneous catalyst for the transesterification of Jatropha crucas oil with ethanol and methanol for the production of fatty acid ethyl and methyl esters, respectively. The catalysts were characterized by powder X-ray diffraction, Fourier transforminfrared spectroscopy, Brunauer-Emmett-Teller surface Area measurement, scanning electron microscopy, transmission electron microscopy techniques and basic strength of the catalyst were established by acid-base titration. The catalytic activity was found to be a function of basic sites which in turn depend on calcination temperature and zirconium concentration. The catalyst with 15 wt.% zirconium concentration and calcined at 700 degrees C, showed the highest catalytic activity among the prepared catalysts. A pseudo first order kinetic equation was applied to evaluate the kinetic parameters of Zr/CaO catalyzed transesterification. The activation energy (Ea) for the Zr/CaO catalyzed methanolysis and ethanolysis was found to be 29.8 kJ mol(-1) and 42.5 kJ mol(-1), respectively. The Koras-Nowak test was performed to demonstrate that catalytic activity was independent from the mass transport phenomenon and follows the kinetic regime. (C) 2013 Elsevier BY. All rights reserved.
公开日期	2015-01-28
内容类型	期刊论文
源URL	[http://ir.xtbg.org.cn/handle/353005/7805]
专题	西双版纳热带植物园_热带植物资源可持续利用重点实验室特色文献_小桐子相关文献
推荐引用方式 GB/T 7714	Kaur, N.. Kinetics and reusability of Zr/CaO as heterogeneous catalyst for the ethanolysis and methanolysis of Jatropha crucas oil[J]. Fuel Processing Technology,2014,119(x):173-184.
APA	Kaur, N..(2014).Kinetics and reusability of Zr/CaO as heterogeneous catalyst for the ethanolysis and methanolysis of Jatropha crucas oil.Fuel Processing Technology,119(x),173-184.
MLA	Kaur, N.."Kinetics and reusability of Zr/CaO as heterogeneous catalyst for the ethanolysis and methanolysis of Jatropha crucas oil".Fuel Processing Technology 119.x(2014):173-184.