Preparation and application of binary acid-base CaO-La2O3 catalyst for biodiesel production
Lee, H. V.
2015
Source PublicationRenewable Energy
ISSN0960-1481
Volume74Pages:124-132
AbstractA simple method was developed for biodiesel production from non-edible Jatropha oil which contains high free fatty acid using a bifunctional acid-base catalyst. The acid-base catalyst comprising CaO and La2O3 mixed metal oxides with various Ca/La atomic ratios were synthesized via co-precipitation method. The effects of Ca/La compositions on the surface area, acidity-basicity and transesterification activity were investigated. Integrated metal-metal oxide between Ca and La enhanced the catalytic activity due to well dispersion of CaO on composite surface and thus, increased the surface acidic and basic sites as compared to that of bulk CaO and La2O3 metal oxide. Furthermore, the transesterification reactions resulted that the catalytic activity of CaO-La2O3 series were increased with Ca/La atomic ratio to 8.0, but the stability of binary system decreased by highly saturated of CaO on the catalyst surface at Ca/La atomic ratio of 10.0. The highest biodiesel yield (98.76%) was achieved under transesterification condition of 160 degrees C, 3 h, 25 methanol/oil molar ratio and 3 wt.%. In addition, the stability of CaO-La2O3 binary system was studied. In this study, Ca-La binary system is stable even after four cycles with negligible leaching of Ca2 ion in the reaction medium. (C) 2014 Elsevier Ltd. All rights reserved.
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/7273
Collection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
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Lee, H. V.. Preparation and application of binary acid-base CaO-La2O3 catalyst for biodiesel production[J]. Renewable Energy,2015,74:124-132.
APA Lee, H. V..(2015).Preparation and application of binary acid-base CaO-La2O3 catalyst for biodiesel production.Renewable Energy,74,124-132.
MLA Lee, H. V.."Preparation and application of binary acid-base CaO-La2O3 catalyst for biodiesel production".Renewable Energy 74(2015):124-132.
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