Magnetic Fe-Ca oxide as a solid base catalyst for transesterification of rapeseed oil to produce biodiesel

被引：0
|
作者：
Li, Mei [1 ,2 ]
Lü, Peng-Mei [1 ]
Yang, Ling-Mei [1 ]
Luo, Wen [1 ]
Wang, Zhong-Ming [1 ]
Li, Hui-Wen [1 ]
Yuan, Zhen-Hong [1 ]
机构：
[1] Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, CAS, Guangzhou 510640, China
[2] Graduate University of Chinese Academy of Sciences, Beijing 100049, China
来源：
Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2012年 / 40卷 / 04期
关键词：
Atomic emission spectroscopy - Binary alloys - Fatty acids - Hematite - Iron alloys - Oilseeds - Saturation magnetization - Transesterification - Vegetable oils;
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摘要：
Fe-Ca bifunctional magnetic solid base (CaO·γ-Fe2O3) was prepared via in-situ coprecipitation and used as catalyst in transesterification of rapeseed oil to produce biodiesel. The catalyst was characterized by XRD, BET, TG-DTA, SEM and VSM and the amounts of Ca and Fe leached in fatty acid methyl ester were measured through ICP-AES. The results indicated that Ca and Fe components are well composited; the CaO·γ-Fe2O3 catalyst exhibits good magnetic properties with high saturation magnetization (45.7 emu/g), much higher than that of those magnetic base catalysts reported up to now. Under the mild conditions of 64°C, catalyst amount of 2.5%, methanol/oil mol ratio of 15, and reaction time of 2 h, the oil conversions for first three cycles remain above 95%.
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页码：405 / 411
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