| 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 |
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| 引用本文： | 李秀凤,包桂蓉,王华.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[J].燃料化学学报,2012,40(1):37-42. |
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| 作者姓名： | 李秀凤 包桂蓉 王华 |
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| 作者单位： | Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| 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) |
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| 摘 要： | 用沉淀浸渍法制备了固体酸催化剂SO42-/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,SO42-/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-dcA/dt=38371e-45310/RTcA1.44。
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| 关 键 词： | 固体酸 小桐子油脂肪酸 酯化 动力学 |
| 收稿时间： | 2011-02-13 |
| 修稿时间： | 2011-05-24 |
Biodiesel production from Jatropha curcas L.fatty acids using solid acid SO42-/ZrO2-CeO2 as catalyst |
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| LI Xiu-feng,BAO Gui-rong,WANG Hua.Biodiesel production from Jatropha curcas L.fatty acids using solid acid SO42-/ZrO2-CeO2 as catalyst[J].Journal of Fuel Chemistry and Technology,2012,40(1):37-42. |
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| Authors: | LI Xiu-feng BAO Gui-rong WANG Hua |
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| Institution: | (Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China) |
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| Abstract: | Solid acid SO42-/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 SO42-/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-dcA/dt=38 371e-45310/RTc1.44A. |
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| Keywords: | solid acid Jatropha curcas L fatty acids esterification kinetics |
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