Simultaneous synthesis of dimethyl carbonate and poly (ethylene terephthalate) using alkali metals as catalysts

Abstract

Abstract: Dimethyl carbonate (DMC) and poly(ethylene terephthalate) was simultaneously synthesized by the transesterification of ethylene carbonate (EC) with dimethyl terephthalate (DMT) in this paper. This reaction is an excellent green chemical process without poisonous substance. Various alkali metals were used as the catalysts. The results showed alkali metals had catalytic activity in a certain extent. The effect of reaction condition was also stud-ied. When the reaction was carried out under the following conditions: the reaction temperature 250℃, molar ratio of EC to DMT 3︰1, reaction time 3h, and catalyst amount 0.004 (molar ratio to DMT), the yield of DMC was 68.9%.

Key words: ethylene carbonate, dimethyl terephthalate, dimethyl carbonate, poly (ethylene terephthalate), transesterification, catalyst

摘要： Dimethyl carbonate (DMC) and poly(ethylene terephthalate) was simultaneously synthesized by the transesterification of ethylene carbonate (EC) with dimethyl terephthalate (DMT) in this paper. This reaction is an excellent green chemical process without poisonous substance. Various alkali metals were used as the catalysts. The results showed alkali metals had catalytic activity in a certain extent. The effect of reaction condition was also stud-ied. When the reaction was carried out under the following conditions: the reaction temperature 250℃, molar ratio of EC to DMT 3︰1, reaction time 3h, and catalyst amount 0.004 (molar ratio to DMT), the yield of DMC was 68.9%.

关键词: ethylene carbonate;dimethyl terephthalate;dimethyl carbonate;poly (ethylene terephthalate);transesterification;catalyst

ZHANG Dan, WANG Qingyin, YAO Jie, WANG Yue, ZENG Yi, WANG Gongying. Simultaneous synthesis of dimethyl carbonate and poly (ethylene terephthalate) using alkali metals as catalysts[J]. .

张丹, 王庆印, 姚洁, 王越, 曾毅, 王公应. 碱金属化合物催化同时合成碳酸二甲酯和聚对苯二甲酸乙二醇酯[J]. CIESC Journal.

References

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