Transesterification of Nannochloropsis oculata microalga's lipid to biodiesel on Al2O3 supported CaO and MgO catalysts

被引：247
作者：
Umdu, Emin Selahattin [1 ]
Tuncer, Mert [1 ]
Seker, Erol [1 ]
机构：
[1] Izmir Inst Technol, Dept Chem Engn, TR-35430 Izmir, Turkey
来源：
BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 11期
关键词：
Biodiesel; Nannochloropsis oculata; Microalgae; Heterogeneous catalyst; Sol-gel; FATTY-ACID; ALUMINA; CALCIUM;
D O I：
10.1016/j.biortech.2008.12.027
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, we present the activities of Al2O3 supported CaO and MgO catalysts in the transesterification of lipid of yellow green microalgae, Nannochloropsis oculata, as a function of methanol amount and the CaO and MgO loadings at 50 degrees C. We found that pure CaO and MgO were not active and CaO/Al2O3 catalyst among all the mixed oxide catalysts showed the highest activity. Not only the basic site density but also the basic strength is important to achieve the high biodiesel yield. Biodiesel yield over 80 wt.% CaO/Al2O3 catalyst increased to 97.5% from 23% when methanol/lipid molar ratio was 30. (c) 2008 Elsevier Ltd. All rights reserved.
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页码：2828 / 2831
页数：4
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