中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (03): 267-271.DOI: 10.3724/SP.J.1095.2011.00271

• 研究论文 • 上一篇    下一篇

纳米固体碱CaO-ZrO2催化红麻籽油制备生物柴油

陈杰博,苏金为*,祁建民,陈新香,陈亮   

  1. (福建农林大学生命科学学院 福州  350002)
  • 收稿日期:2010-05-10 修回日期:2010-09-01 出版日期:2011-03-10 发布日期:2011-03-10
  • 通讯作者: 苏金为，教授; Tel/Fax:0591-83750182; E-mail:jiebochen@163.com; 研究方向：化学生物
  • 作者简介:
  • 基金资助:
    福建省科技厅计划项目（2008N006）

Preparing Biodiesel from Flaxseed Oil Using CaO-ZrO2 Solid Base Catalyst

CHEN Jiebo, SU Jinwei*, QI Jianmin, CHEN Xinxiang, CHEN Liang   

  1. (College of Life Science,Fujian Agriculture and Forestry University,Fuzhou  350003)
  • Received:2010-05-10 Revised:2010-09-01 Published:2011-03-10 Online:2011-03-10
  • Contact: Su Jinwei

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摘要：

采用溶胶-凝胶法制备了CaO摩尔分数为10%~50%的CaO-ZrO2系列纳米催化剂，将其用于催化红麻籽油制备生物柴油，通过CO2-TPD、XRD和TEM等测试技术对催化剂的碱性、结构和表面形貌进行表征。 结果表明，CaO摩尔分数低于30%时，CaO与ZrO2形成连续固溶体，催化剂具有良好的热稳定性能，粒径为10~20 nm。 催化实验表明，当CaO摩尔分数为30%时，CaO-ZrO2催化剂具有最好的催化活性，甲醇与红麻籽油的摩尔比为12∶1、催化剂为油料质量比的2.5%、反应时间3 h时，最高转化率可达到93.2%。

关键词: CaO-ZrO2, 固体碱, 红麻籽油, 生物柴油

Abstract:

CaO-ZrO2 nanoparticles with CaO molar fraction ranging from 10% to 50% were prepared by the sol-gel method and their catalytic performances were evaluated in biodiesel production from flaxseed oil; XRD, CO2-TPD, and TEM were employed for the catalyst characterization. The results indicate that when CaO molar fraction was lower than 30%, the samples form CaO-ZrO2 homogeneous solid solution, which possesses good thermal stability and the grain diameter is 10~20 nm. The experimental results show that the highest catalytic activity can be achieved when CaO molar fraction was 30%. The yield of conversion could reach 93.2% when the reaction conditions were optimized for the transesterification of flaxseed oil. The dosage (mass ratio) of catalyst to oil was 2.5%, the reaction temperature and time were 65 ℃ and 2 h respectively, and the molar ratio of methanol to oil is 12∶1.

Key words: CaO-ZrO2, solid base, flaxseed oil, biodiesel

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