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本文研究了在H型强酸性阳离子交换树脂存在下,邻苯二甲酸酐及顺丁烯二酸酐与乙二醇的酯化反应动力学。结果表明:在H型强酸性阳离子交换树脂存在下,上述反应的动力学过程不能用Lin在液体酸催化时的动力学方程—d[COOH]/dt=k″(COOH)~2来表示,但与动力学方程—d[COOH]/dt二k(k_h+k′_h)[COOH][OH]~2则有很好的一致性。
In this paper, the esterification kinetics of phthalic anhydride and maleic anhydride with ethylene glycol in the presence of H-type strong acid cation exchange resin was studied. The results show that the kinetic process of the above reaction can not be expressed by the kinetic equation -d [COOH] / dt = k "(COOH) -2 when Lin is catalyzed by liquid acid in the presence of H-type strong acid cation exchange resin. However, there is a good agreement with the kinetic equation -d [COOH] / dt k (k_h + k’_h) [COOH] [OH] ~ 2.