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本文是研究在二乙烯基苯交联聚苯乙烯季铵盐型相转移催化剂下,以烯丙基氯的甲苯溶液为有机相和亲核试剂的水溶液为水相的亲核取代反应动力学。通过气相色谱法定量地研究了搅拌速度、温度和不同亲核试剂对反应的影响。实验表明:反应速率随搅拌速度增大而加快,当搅拌速度达到某个定值后,反应速率不再变化;反应速率随着温度升高而加快,并得到了硫氰酸钾与烯丙基氯反应的表观活化能和活化熵;本文还定量地指出了负离子的反应活性次序为SCN~->I~-。
In this paper, we study the nucleophilic substitution reaction kinetics of aqueous solution of allyl chloride toluene solution as organic phase and nucleophile as aqueous phase under divinyl benzene cross-linked polystyrene quaternary ammonium salt phase transfer catalyst. The effects of stirring speed, temperature and different nucleophiles on the reaction were studied quantitatively by gas chromatography. The experimental results show that the reaction rate increases with the agitation speed. When the agitation speed reaches a certain value, the reaction rate does not change any more. The reaction rate increases with the increase of temperature, and the reaction of potassium thiocyanate and allyl The apparent activation energy and activation entropy of chlorine reaction are also pointed out in this paper. The order of the reactivity of anion is SCN ~ -> I ~ -.