固体酸SO42-/ZrO2-CeO2催化小桐子油脂肪酸制备生物柴油的实验研究

李秀凤; 包桂蓉; 王华

固体酸SO₄^2-/ZrO₂-CeO₂催化小桐子油脂肪酸制备生物柴油的实验研究

昆明理工大学冶金与能源工程学院, 云南昆明 650093

基金项目: 国家科技支撑计划项目(2007BAD32B03);云南省自然科学基金(2006E0022Q)。

详细信息

作者简介:
李秀凤(1981- ), 女, 硕士研究生, 主要从事生物质能源方面研究, E-mail:dylxf9@163.com。

通讯作者:
包桂蓉(1969- ), 女, 副教授, 主要从事工程热物理, 生物质的转化与利用研究, E-mail:baoguirong@hotmail.com。

中图分类号: TK6
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出版历程
- 收稿日期: 2011-02-13
- 修回日期: 2011-05-24
- 刊出日期: 2012-01-31

Biodiesel production from Jatropha curcas L. fatty acids using solid acid SO₄^2-/ZrO₂-CeO₂ as catalyst

Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

摘要

摘要: 用沉淀浸渍法制备了固体酸催化剂SO₄^2-/ZrO₂-CeO₂,用于催化小桐籽油脂肪酸与甲醇酯化制备生物柴油。考察了焙烧温度和CeO₂负载量对催化剂活性的影响,并进行了单因素实验和动力学研究。研究表明,SO₄^2-/ZrO₂-CeO₂有较高的催化活性,当甲醇与脂肪酸体积比 2∶1,反应温度150 ℃,催化剂用量为脂肪酸质量的8%,反应60 min时,脂肪酸转化率可达0.9403。动力学计算表明,该酯化反应的表观活化能为45.31 kJ/mol,动力学模型为-dc_A/dt=38371e^-45310/RTc_A^1.44。
- 固体酸 /
- 小桐子油脂肪酸 /
- 酯化 /
- 动力学
Abstract: Solid acid SO₄^2-/ZrO₂-CeO₂ was prepared by co-precipitation impregnation method, which was used as catalyst for biodiesel production from Jatropha curcas L. fatty acids with methanol. Effects of CeO₂ loading and calcination temperature on performance of the catalyst were examined; besides, single factor experiments and kinetics were also studied. The results show that SO₄^2-/ZrO₂-CeO₂has higher catalytic activity. The conversion of fatty acids reaches 0.940 3 at 150 ℃ in 60 min when the weight ratio of catalyst to fatty acids is 8% and the volume ratio of methanol to acids is 2∶1. The kinetics calculation indicates that the apparent activation energy is 45.31 kJ/mol, and kinetic model is-dc_A/dt=38371e^-45310/RTc_A^1.44.
- solid acid /
- Jatropha curcas L. fatty acids /
- esterification /
- kinetics

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参考文献(12)

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固体酸SO₄^2-/ZrO₂-CeO₂催化小桐子油脂肪酸制备生物柴油的实验研究

作者简介:
李秀凤(1981- ), 女, 硕士研究生, 主要从事生物质能源方面研究, E-mail:dylxf9@163.com。

通讯作者:
包桂蓉(1969- ), 女, 副教授, 主要从事工程热物理, 生物质的转化与利用研究, E-mail:baoguirong@hotmail.com。

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Biodiesel production from Jatropha curcas L. fatty acids using solid acid SO₄^2-/ZrO₂-CeO₂ as catalyst

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