Ultrasound-assisted transesterification of crude Jatropha oil using cesium doped heteropolyacid catalyst: Interactions between process variables

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	Ultrasound-assisted transesterification of crude Jatropha oil using cesium doped heteropolyacid catalyst: Interactions between process variables
	Badday, A. S.
刊名	Energy
	2013
卷号	60 期号:0 页码:283-291
ISSN号	0360-5442
中文摘要	Transesterification of crude Jatropha oil in the presence of cesium doped heteropolyacid catalyst and assisted by ultrasonic irradiation was investigated. Different Cs heteropolyacid catalysts with different levels of cesium exchange were synthesized and characterized for physical and chemical properties. They were subsequently tested in pre-elementary reaction conditions to identify the most active catalyst. Cs1.5H1.5PW12O40 catalyst showed the highest FAME (fatty acid methyl ester) yield of 81.3% in 60 min while higher Cs levels resulted in poorer activity. Four reaction variables i.e. reaction time (10-50 min), methanol to oil molar ratio (5:1-25:1), ultrasonic amplitude (30-90% of the maximum sonifier power) and catalyst amount (2.5-4.5 w/w oil) were optimized to generate mathematical representation of FAME yield. The highest yield of 90.5% was achieved in just 34 min under the optimum reaction conditions i.e. at an ultrasonic amplitude of similar to 60%, and a molar ratio of 25:1. The catalyst was also investigated for possible reusability and leaching under ultrasonic conditions. The reaction was mostly heterogeneous in nature and the catalyst also showed minimal reduction in the activity after three successive reaction runs under the optimum reaction conditions. (C) 2013 Elsevier Ltd. 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/353005/7452]
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	Badday, A. S.. Ultrasound-assisted transesterification of crude Jatropha oil using cesium doped heteropolyacid catalyst: Interactions between process variables[J]. Energy,2013,60(0):283-291.
APA	Badday, A. S..(2013).Ultrasound-assisted transesterification of crude Jatropha oil using cesium doped heteropolyacid catalyst: Interactions between process variables.Energy,60(0),283-291.
MLA	Badday, A. S.."Ultrasound-assisted transesterification of crude Jatropha oil using cesium doped heteropolyacid catalyst: Interactions between process variables".Energy 60.0(2013):283-291.