文献类型：期刊文献

中文题名：Zn-Al-M氧化物催化尿素醇解合成碳酸乙烯酯研究

英文题名：Research on synthesis of ethylene carbonate via urea alcoholysis catalyzed by ZnAlM oxide

作者：马璐遥[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：2025

卷号：45

期号：S2

起止页码：336

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：;北大核心:【北大核心2023】；

基金：陕煤联合基金(2019JLM-20)。

语种：中文

中文关键词：ZnAlM金属氧化物;尿素;乙二醇;碳酸乙烯酯

外文关键词：ZnAlM metal oxide;urea;ethylene glycol;ethylene carbonate

摘要：采用机械研磨法制备了Zn-Al-M三元金属氧化物催化剂用于催化尿素醇解合成碳酸乙烯酯(EC),并优化了催化剂中各氧化物比例和反应工艺条件。结果表明,在使用n(Zn)∶n(Al)∶n(M)=3∶1∶0.5的催化剂、反应温度160℃、乙二醇(EG)/尿素摩尔比为1.35∶1、压力5 kPa、催化剂用量为体系质量的1.5%、反应时间2.75 h、转速500 r/min的条件下,乙二醇和尿素反应得到的碳酸乙烯酯收率最高,达到94.12%。催化剂重复使用4次仍保持良好活性。XRD等表征表明Zn和M有协同催化作用,能促进EC生成。
Zn-Al-M ternary metal oxide catalysts are prepared via a mechanical grinding method,and used to catalyze urea alcoholysis to produce ethylene carbonate.The ratios of the oxides in the catalysts as well as the reaction process conditions are optimized.The results show that the yield of ethylene carbonate from the reaction between ethylene glycol and urea reaches the highest,being 94.12%when n(Zn)∶n(Al)∶n(M)=3∶1∶0.5,reaction temperature is 160℃,the molar ratio of ethylene glycol to urea is 1.35∶1,the pressure is 5 kPa,the mass of catalyst is 1.5%that of the system,reaction time is 2.75 hours,and the stirring speed is 500 r/min.The catalyst maintains good activity even after being reused four times.XRD and other characterization results indicate that there is a synergistic effect between Zn and M,which promotes the formation of ethylene carbonate.