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二苯并-18-冠-6助催化CO_2一步酯交换法合成碳酸二甲酯的研究 被引量：2

One-step transesterification synthesis of dimethyl carbonate from CO_2 over dibenzo-18-crown-6 as promoter
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摘要 首次采用二苯并-18-冠-6(DBC)为助催化剂,以提高卤化钾对环氧化物、甲醇和CO2一步酯交换法合成碳酸二甲酯(DMC)的催化性能。在一个相对温和的条件(CO2初始压力2MPa,反应温度为130°C)下反应8h,KCl和DBC催化体系合成DMC的收率最高可达31.9%,比单纯使用KCl催化剂的收率提高了一倍,表明DBC对该反应明显具有助催化剂作用。从实验结果推测,环氧化物与亲核试剂发生亲核反应而开环是该催化反应的关键步骤。 Diberzo-18-crown-6（DBC） was firstly used as prormater to improve catalytic performance of potassium halides for one-step transesterifieation synthesis of dimctbyl carbonate （DMC） from epoxide, methanol and CO2. Under a mild reaction condition （ ini- tial pressure of C02：2MPa, reaction temperature ： 130℃, time ： 8 h）, the yield of DMC over KC1 and DBC reached 31.9% , which has double yield of DMC over KC1 catalyst, indicating that DBC has obvious coeatlysis effect on this reaction. It was proposed that the ring opening of epoxide by nucleophilie reagent was the key step for this reaction.
作者 李艳飞 李雷 丁力浩 王亮 侯杰 汪海东
机构地区 常州大学石油化工学院 嘉兴学院生物与化学工程学院
出处 《化学研究与应用》 CAS CSCD 北大核心 2012年第10期1510-1513,共4页 Chemical Research and Application
基金 浙江省自然科学基金项目资助(Y4100780) 嘉兴市科技计划项目资助(2010AY1090)
关键词 二氧化碳 碳酸二甲酯 酯交换法 冠醚 助催化剂 carbon dioxide dimethyl carbonate transesterification crown ether promoter
分类号 O643.32 [理学—物理化学]
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参考文献15

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共引文献47

同被引文献45

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引证文献2

二级引证文献6

化学研究与应用
2012年 第10期

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