Fe-Ca磁性固体碱催化剂上菜籽油酯交换反应

李梅; 吕鹏梅; 杨玲梅; 罗文; 王忠铭; 李惠文; 袁振宏

Fe-Ca磁性固体碱催化剂上菜籽油酯交换反应

1.
中国科学院广州能源研究所中国科学院可再生能源与天然气水合物重点实验室, 广东广州 510640;
2.
中国科学院研究生院, 北京 100049

基金项目: "十二五"农村领域国家科技计划课题(2011BAD22B05)。

详细信息

通讯作者:
吕鹏梅。 Tel: 020-87057760; E-mail: lvpm@ms.giec.ac.cn。

中图分类号: TE 626.24
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- 被引次数: 0
出版历程
- 收稿日期: 2011-04-11
- 修回日期: 2011-07-03
- 刊出日期: 2012-04-30

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

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

摘要

摘要: 采用原位沉淀法合成了双功能磁性固体碱催化剂CaO·γ-Fe₂O₃,用于催化菜籽油酯交换反应制备生物柴油。利用XRD、BET、TG-DTA、SEM和VSM对催化剂进行了表征,用ICP-AES对产物脂肪酸甲酯(FAME)中Ca、Fe残留量进行了测定。结果表明,Fe和Ca两种组分间有较好复合,催化剂显示出较好的磁学性能,饱和磁化率达到45.7emu/g,明显高于文献报道的磁性碱催化剂。在温和的反应条件(常压、64℃、催化剂加入量为油重的2.5%、醇油摩尔比15、转速750r/min)下,反应2h,重复使用前三次酯交换反应转化率都维持在95%左右。
- 磁性固体碱催化剂 /
- CaO /
- Fe₂O₃ /
- 生物柴油 /
- 菜籽油
Abstract: 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 (45.7emu/g), much higher than that of those magnetic base catalysts reported up to now. Under the mild conditions of 64℃, catalyst amount of 2.5%, methanol/oil mol ratio of 15, and reaction time of 2h, the oil conversions for first three cycles remain above 95%.
- magnetic solid base catalyst /
- CaO /
- Fe₂O₃ /
- biodiesel /
- rapeseed oil

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