碳酸二甲酯催化合成反应新途径的研究.pdf

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第 26 卷第 7 期北京理工大学学报 Vol. 26 No. 7
2006 年 7 月 Transactions of Beijing Institute of Technology J ul. 2006
文章编号:1001 0645 (2006) 07 0651 04
碳酸二甲酯催化合成反应新途径的研究
高志明, 苏俊华, 陈秀芝, 胡长文
(北京理工大学理学院, 北京 100081)
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摘要: 研究了环氧丙烷( PO) 、二氧化碳和甲醇合成碳酸二甲酯(DMC) 的反应过程. 四丁基溴化铵和甲醇钠构成
该反应的双组份催化剂. 实验结果表明,在 T = 423 K、p = 4 MPa 条件下,将该双组分催化剂分两次加入时,DMC
的选择性为 55 8 % ,副产物的选择性为 1 4 %. 该结果明显优于将该双组分催化剂一次性加入情况的结果.
关键词: 碳酸二甲酯; 二氧化碳; 环氧丙烷; 催化剂
中图分类号: O 643 文献标识码: A
New Route for the Catalytic Synthesis of Dimethyl Carbonate
GAO Zhi ming , SU J un hua , CHEN Xiu zhi , HU Chang wen
(School of Science , Beijing Institute of Technology , Beijing 100081 , China)
Abstract : Synthesis of dimethyl carbonate (DMC) from propylene oxide ( PO) , carbon dioxide and
methanol was investigated. Tetrabutyl ammonium bromide and sodium methoxide were used as cata
lyst for the reaction. It was found that under the reaction conditions of T = 423 K , P = 4 MPa selectiv
ity of DMC was 55 8 % , and selectivity of the by products was 1 4 % , when the ponents of
the catalyst were added separately in two steps. These results were much better than those of the case
when the ponents were added simultaneously.
Key words : dimethyl carbonate ; carbon dioxide ; propylene oxide ; catalyst
碳酸二甲酯(DMC) 是一种重要的化学品,近年控制在了 0 5 %以下,DMC 的选择性达 44 %. 本文
来受到了国内外