用新型催化剂合成碳酸丙烯酯与条件优化

Synthesis of Propylene Carbonate in the Presence of a New Catalyst and Process Condition Optimization

研究了新型催化剂ＭＣ－３存在下环氧丙烷与ＣＯ２合成碳酸丙烯酯的反应。应用均匀设计法对实验进行优化，确定了合成碳酸丙烯酯的最佳工艺条件，即反应温度１３５℃，压力３．０ＭＰａ，催化剂浓度０．００１（摩尔比），搅拌转速９１６ｒ／ｍｉｎ。在此条件下催化剂活性为３．４９ｍｏｌ环氧丙烷／ｍｏｌ（ｃａｔ）．ｍｉｎ，碳酸丙烯酯产率大于９７％。对催化反应机理也进行了探讨。

The synthesis of propylene carbonate (PC) from propylene oxide and CO2 in the presense of newMC-3 catalyst was studied. The experiments were optimized in the study by Uniform Design and theoptimum reaction conditions obtained were as follows: temperatare 135C, pressure 3. OMPa, catalystconcentration 0.0011 (mole ratio), stirring rate 916 rpm. The activity of MC-3 is 3. 49 mol/mol .min andthe yield of PC is over 97%. Its reaction mechanism was also discussed in this paper.