碳酸二甲酯
酯交换
碳酸二乙酯
催化作用
电解质
化学
碳酸盐
无机化学
乙醇
碳酸乙烯酯
有机化学
物理化学
电极
作者
Chengwei Liu,Zi-Yi Chi,Yong Yan,Zhenyang Lu,Xue‐Gang Li,J. Yan,Man Luo,Wen‐De Xiao
标识
DOI:10.1021/acs.iecr.2c03505
摘要
The light alkyl carbonates are indispensable co-solvents of electrolytes for lithium-ion batteries. In this work, the tunable transesterification of dimethyl carbonate (DMC) with ethanol to co-produce ethyl methyl carbonate (EMC) and diethyl carbonate (DEC) was investigated based on an efficient catalytic system with the solid alkaline catalyst. It was found that the γ-Al2O3-supported K2CO3 catalyst exhibited high activity for the transesterification reaction, with a tunable feature for the selectivities of EMC and DEC by changing the space velocity and feed ratio of DMC to ethanol at the temperature between 120 and 150 °C. According to the results of characterizations and activity tests, a synergistic mechanism was proposed. The reaction kinetic model was also established, which displayed good agreement with the experimental results.
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