碳酸乙烯酯的分解反应

Decomposition of ethylene carbonate

研究了碳酸乙烯酯（EC）在乙二醇中的稳定性，同时考察了催化剂用量、停留时间、EC质量分数、加热温度对EC稳定性的影响。结果表明，催化剂会加剧EC的分解；停留时间越长，物料中EC的损失量越大。当EC质量分数大于50％时，分解速率小于20g／（kg·h）；EC质量分数为25％～28％时，分解速率达到76～77g／（kg·h）。加热温度低于150℃时，分解速率小于30g／（kg·h）。

The effects of catalyst content, residence time, mass fraction of ethylene carbonate （ EC）, temperature on decomposition of EC in ethylene glycol were investigated. The results showed that the catalysts could accelerate the decomposition of EC ;the longer residence time, the higher the EC mass loss. When the mass fraction of EC was more than 50% or 25% -28% ,the decomposing rate of EC was less than 20 g/（kg·h） ,76 -77 g/（kg·h） respectively. When the heating temperature was less than 150 ℃ , the decomposing rate of EC was less than 30 g/（kg·h）.