徐明仙,沈德平,邹羽芯,林春绵

• 1:杭州职业技术学院临江学院
• 2:浙江工业大学生物与环境工程学院
• 3:杭州浙大玉泉环保有限公司

摘要(Abstract)：

超临界CO2中一釜法合成碳酸二甲酯(DMC),对于CO2的资源化利用和绿色化学品合成都具有重要的意义。本实验以CO2、环氧丙烷(PO)和甲醇为原料,甲醇钾(CH3OK)为催化剂,无水氯化钙为脱水剂,研究物料配比(VCH3OH:VPO=1~12)、搅拌速度(0~500 r·min-1)、压力(5.0~10 MPa)、温度(110~190℃)和时间(0.25~3 h)对一釜法合成DMC的影响,并提出了超临界CO2中以CH3OK为催化剂一釜法合成DMC可能存在的反应机理。结果表明,在最佳反应条件(VCH3OH:VPO=10:1、搅拌速度为300 r·min-1、反应压力为7.0 MPa、反应温度为140℃)下,反应1 h后甲醇转化率为22.0%,DMC收率达到45.5%。

关键词(KeyWords)： 超临界;CO2;甲醇;环氧丙烷;碳酸二甲酯

Abstract:

Keywords:

基金项目(Foundation): 浙江省自然科学基金(Y5110158);; 浙江省教育厅项目(Y200805324)

作者(Author): 徐明仙,沈德平,邹羽芯,林春绵

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