中南民族大学学报（自然科学版）2025，Vol.44Issue(3)：289-294,6.DOI:10.20056/j.cnki.ZNMDZK.20240720
二乙基三胺五乙酸催化CO2与环氧化物耦合反应研究
Coupling of CO2 with epoxides catalyzed by DTPA
摘要
Abstract
The cheap and readily available diethyltriaminepentaacetic acid(DTPA)was chosen as a catalyst and tetrabutylammonium bromide(TBAB)as a co-catalyst to efficiently catalyze the coupling reaction between CO2 and propylene oxide to form cyclic carbonate under solvent-free conditions with high selectivity.Through systematic study of reaction conditions,the optimal reaction conditions were as follows:1％DTPA(molar ratio relative to substrate),1％TBAB(molar ratio relative to substrate),1 MPa CO2,100℃ and 2 h.Under the optimal reaction conditions,the catalytic system showed good substrate adaptability,and could catalyze the reaction of a variety of epoxides containing different functional groups with CO2 to form the corresponding cyclic carbonates(16 cases).Further studies showed that the catalytic system could also catalyze the reaction of CO2 with different types of epoxides at atmospheric pressure with moderate to excellent catalytic efficiency(9 cases).Subsequently,the reaction kinetics of the cycloaddition was investigated using CO2 and n-butyl glycidyl ether(BGE)as a model reaction,and the activation energy Ea of the reaction was calculated to be 26.5 kJ‧mol-1.Finally,a possible reaction mechanism was proposed.关键词
CO2催化转化/二乙基三胺五乙酸/环状碳酸酯Key words
catalytic conversion of carbon dioxide/diethylenetriaminepentaacetic acid/cyclic carbonate分类
化学引用本文复制引用
原雪芯,周棋棋,陈宇,杨海健..二乙基三胺五乙酸催化CO2与环氧化物耦合反应研究[J].中南民族大学学报（自然科学版）,2025,44(3):289-294,6.基金项目
国家自然科学基金资助项目(51073175) （51073175）
中南民族大学创新团队基金资助项目(XTZ24016) （XTZ24016）
