高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (5): 1138.

• 研究论文 • 上一篇    下一篇

磺酸基功能化的MCM-41催化三乙酸甘油酯与甲醇的酯交换反应

曹映玉1,2,  王亚权1,  郝金库2   

  1. 1. 天津大学化工学院,   绿色合成与转化教育部重点实验室, 天津 300072;
    2. 天津师范大学化学学院, 天津 300387
  • 收稿日期:2010-07-09 修回日期:2010-11-26 出版日期:2011-05-10 发布日期:2011-04-11
  • 通讯作者: 王亚权 E-mail:yingyu_cao@yahoo.com.cn
  • 基金资助:

    国家“八六三”计划项目(批准号: 2007AA05Z104)资助.

Sulfonic Acid-functionalized MCM-41 for Transesterification of Triacetin with Methanol

CAO Ying-Yu1,2, WANG Ya-Quan1*, HAO Jin-Ku2   

  1. 1. Key Laboratory for Green Chemical Technology of Ministry of Education,  School of Chemical Engineering and Technology,  Tianjin University,  Tianjin 300072,  China;
    2. College of Chemistry,  Tianjin Normal University,  Tianjin  300387,  China 2. College of Chemistry,  Tianjin Normal University,  Tianjin  300387,  China
  • Received:2010-07-09 Revised:2010-11-26 Online:2011-05-10 Published:2011-04-11
  • Contact: WANG Ya-Quan E-mail:yingyu_cao@yahoo.com.cn
  • Supported by:

    国家“八六三”计划项目(批准号: 2007AA05Z104)资助.

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被引次数

17

摘要： 通过在孔壁上覆盖糠醇聚合物，于不同温度下用浓硫酸直接进行磺化制备了一系列磺酸基功能化的MCM-41介孔材料，并用氮气吸附-脱附、XRD、XPS和红外光谱等方法对其进行了结构表征，以三乙酸甘油酯和甲醇的酯交换反应为模型反应研究生物柴油的制备。实验结果表明：在中孔结构完好的情况下，一定数量的磺酸基嫁接到了MCM-41的孔壁上.催化剂在酯交换反应中表现出良好的反应活性和选择性，其中SO3H-MCM-41(200 oC)催化剂在反应进行300 min，三乙酸甘油酯的转化率达到99.4%，与液体H2SO4等效，反应进行180 min时，乙酸甲酯和甘油的选择性分别达到71.5%和17.4%.

关键词: 酯交换, 三乙酸甘油酯, MCM-41, 磺酸基功能化MCM-41, 生物柴油

Abstract: A series of sulfonic acid-functionalized MCM-41 catalysts have been synthesized through coating and polymerization of the furfuryl alcohol on the pore walls, and then sulfonated in the presence of sulfuric acid at different temperatures. The catalysts are characterized by Nitrogen adsorption measurements using the procedure according to Brunauer, Emmet and Taller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform Infrared resonance spectroscopy (FTIR), and studied for the transesteri?cation of triacetin with methanol as a model reaction for biodiesel production. The results show that a number of sulfonic groups attach on the pore walls with the mesopores of MCM-41 not being damaged; the catalysts show very high activity and selectivity in the transesteri?cation reaction, and the SO3H-MCM-41(200 oC) exhibits the highest triacetin conversion(99.4%)after 300 min which has the same activity as H2SO4, the selectivity of methy acetate and glycerol is 71.5% and 17.4% after 180 min, respectively.

Key words: Transesteri?cation, Triacetin, MCM-41, sulfonic acid-functionalized MCM-41, Biodiese

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