合成生物柴油Al-MCM-41分子筛负载酸性离子液体催化剂的双酸位调变及界面作用研究

项目名称： 合成生物柴油Al-MCM-41分子筛负载酸性离子液体催化剂的双酸位调变及界面作用研究

项目编号： No.21306063

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 化学工业

项目作者： 范明明

作者单位： 江南大学

项目金额： 25万元

中文摘要： 采用离子液体催化大豆油制备生物柴油，符合绿色化学的要求，成为国内外的研究热点。而该体系中离子液体催化剂尚存在用量大与分离提纯难等问题。前期工作表明分子筛负载离子液体催化剂具有其独特的优势，与单纯离子液体相比，在保持较好催化活性的同时，负载型催化剂稳定性有了很大程度的提高。以大豆油酯交换合成生物柴油的分子筛负载离子液体催化剂研究为基础，进行离子液体及Al-MCM-41分子筛表面酸性基团的调控，促进双酸活性位形成，有效提高催化活性，并深入探讨双酸活性位与催化活性的构效关系；明确离子液体和Al-MCM-41分子筛的界面作用对催化剂稳定性的影响，控制离子液体在载体表面的催化行为，为工业应用奠定基础。

中文关键词： 生物柴油；离子液体；分子筛；双酸位；酯交换

英文摘要： Biodiesel, produced from soybean oil in the presence of ionic liquid catalysts, has drawn more and more attention in recent years, which meet the requirements of green chemistry. But the amount of ionic liquids used in the reaction system was large and it was very difficult to be separated from the reaction mixture. In previous work, it suggested that ionic liquids supported on molecular sieve catalyst had its unique advantages. The catalytic stability of the catalyst had been greatly improved while the catalyst showed better catalytic activity, compared with pure ionic liquid catalysts. On the ground of the study of the ionic liquids supported on Al-MCM-41 molecular sieve catalysts for synthesis of biodiesel from soybean oil by transesterification, this project will investigate how to design and control the acid amount and acid strength of the ionic liquids with different acidic groups and the acidic center and the structure of Al-MCM-41 molecular sieve in order to promote the formation of double acid active sites and improve the catalytic performance, analyze the structure-activity relationship of double acid active sites deeply；and make sure the effect of the interfacial action between ionic liquids and Al-MCM-41 molecular sieve on the catalytic stability in order to control the catalytic behavior and the sta

英文关键词： biodiesel；ionic liquid；molecular sieve；double-acid active sites；transesterification