| Transesterification of Ethylene Carbonate with Dimethyl Terephthalate over Various Metal Acetate Catalysts |
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| 作者姓名： | ZHANG Dan JIA Shu-yong WANG Yue YAO Jie WANG Gong-ying |
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| 作者单位： | ZHANG Dan1，2，JIA Shu-yong1，2，WANG Yue1，YAO Jie1 and WANG Gong-ying11. Chengdu Institute of Organic Chemistry，Chinese Academy of Sciences，Chengdu 610041，P. R. China; 2. Graduate School of Chinese Academy of Sciences，Beijing 100039，P. R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | IntroductionDimethyl carbonate(DMC) is known to be a novelbuilding block in organic synthesis. As an environmen-tally benign compound and a unique intermediate,DMC has attracted much attention1,2]. Among the va-rious methods for synthesizing DMC, the tra…
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| 关 键 词： | 碳酸乙烯酯 对苯二甲酸二甲酯 酯交换反应 金属醋酸盐催化剂 |
| 收稿时间： | 2006-10-20 |
Transesterification of Ethylene Carbonate with Dimethyl Terephthalate over Various Metal Acetate Catalysts |
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| ZHANG Dan JIA Shu-yong WANG Yue YAO Jie WANG Gong-ying.Transesterification of Ethylene Carbonate with Dimethyl Terephthalate over Various Metal Acetate Catalysts[J].Chemical Research in Chinese University,2007,23(2):173-175. |
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| Authors: | Dan ZHANG Shu-yong JIA Yue WANG Jie YAO Gong-ying WANG |
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| Institution: | aChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China;bGraduate School of Chinese Academy of Sciences, Beijing 100039, P. R. China |
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| Abstract: | The reaction between ethylene carbonate and dimethyl terephthalate was carried out for the simultaneous synthesis of dimethyl carbonate and poly( ethylene terephthalate). This reaction is an excellent chemical process that is environmentally friendly and produces no poisonous substance. The metal acetate catalysts used for this reaction are discussed in detail. Lithium acetate dihydrate was found to be a novel and efficient catalyst for this reaction. Compared with other metal acetates, lithium acetate dihydrate can attain a maximum catalytic activity at a lower concentration.When the reaction was carried out under the following conditions: the reaction temperature from 230 to 250 ℃, molar ratio of ethylene carbonate(EC) to dimethyl terephthalate(DMT) 3: 1, reaction time 3 h, and a catalyst amount of 0. 4% (molar fraction to DMT), the yield of dimethyl carbonate(DMC) was 79. 1%. |
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| Keywords: | Metal acetate Ethylene carbonate Dimethyl terephthalate Dimethyl carbonate Poly( ethylene terephthalate ) |
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