文献类型：期刊文献

中文题名：离子液体催化CO_(2)与环氧丙烷合成碳酸丙烯酯反应动力学研究

英文题名：Study on reaction kinetics of synthesizing propylene carbonate from carbon dioxide and propylene oxide catalyzed by ionic liquids

作者：吴嘉伟[1];沈卫华[1];方云进[1]

机构：[1]华东理工大学化工学院化学工程联合国家重点实验室,上海200237

年份：2024

卷号：53

期号：3

起止页码：323

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：国家自然科学基金项目(21576083);陕西省自然科学基础研究计划资助项目(2019JLM-20)。

语种：中文

中文关键词：离子液体;二氧化碳;碳酸丙烯酯;动力学方程

外文关键词：ionic liquid;carbon dioxide;propylene carbonate;kinetic equation

摘要：利用自制烷基功能化催化剂催化环氧丙烷(PO)与CO_(2)环加成生成碳酸丙烯酯(PC),对催化剂用量,反应温度,反应压力及反应时间进行优化,推导了该催化剂催化PC合成的反应机理并建立了动力学方程,讨论了不同温度下PO转化率和PC生成速率随时间变化的规律。实验结果表明,当催化剂用量为0.8%(w)、反应温度140℃、反应压力4.0 MPa、反应时间2.0 h时,PO转化率可达99.61%,PC收率达99.25%。PC合成反应速率与PO的浓度呈线性关系,并遵循一级反应动力学规律。
The self-made alkyl functionalization catalyst was prepared and applied in the cycloaddition reaction of propylene oxide(PO)and CO_(2) to propylene carbonate(PC).The catalyst amount,the reaction temperature,the reaction pressure and the reaction time were optimized.The reaction mechanism was derived.The kinetic equation was established.And the relationship of PO conversion and PC yield with time at different temperatures was discussed.The experimental results show that the PO conversion and the PC yield can reach 99.61%and 99.25%respectively when the catalyst amount is 0.8%(w),the reaction temperature is 140℃,the reaction pressure is 4.0 MPa,and the reaction time is 2.0 h.The reaction rate of PC synthesis exhibits a linear relationship with the concentration of PO and follows the first-order reaction kinetics law.