张永昭,计建炳,艾宁

• 1:浙江工业大学化学工程与材料学院
• 2:杭州职业技术学院临江学院

摘要(Abstract)：

以正十二醇和葡萄糖为原料一步法制备十二烷基葡萄糖苷,研究了不同反应条件(催化体系、催化剂用量、温度、醇糖比等)对反应过程转化率和选择性的影响,提出了此反应过程的物理模型。研究结果表明,合成十二烷基葡萄糖苷的反应主要由生成十二烷基葡萄糖苷的主反应和生成多糖的副反应组成。十二醇与葡萄糖反应生成烷基葡萄糖苷的主反应属于液相反应机理,首先葡萄糖溶解于十二醇中,然后与十二醇发生均相反应,碳正离子与十二醇的反应是整个反应的控制步骤。反应过程中,反应体系中部分固相葡萄糖处于熔融状态,能捕捉液相中的催化剂,生成多糖副产物。不同反应条件下的实验结果表明,此反应机理能很好地描述反应过程,为此反应过程的动力学研究提供了理论基础。

关键词(KeyWords)： 一步法;烷基葡萄糖苷;表面活性剂;反应机理;反应动力学

Abstract:

Keywords:

基金项目(Foundation): 浙江省生物燃料利用技术研究重点实验室开放基金(20120105)

作者(Author): 张永昭,计建炳,艾宁

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