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研究了在CO_2(CO)_3 催化下氯苄在水/二甲苯体系中的相转移羰化反应动力学.在CO压力保持不变的情况下,氯苄的消失速度符合假一级反应动力学方程,反应速度分别比例于加入的八羰基二钴、苄基三甲基氯化胺和氢氧化钠的量.反应速度决定步骤是在液—液界面进行的酰基羰基钴(PhCH_2CO-Co(CO)_4)被PhCH_2N~+(CH_3)_3OH~-分解的反应,根据动力学测定的结果,提出了相应的反应机理并推导出了反应速度方程.
The phase transfer carbonylation kinetics of benzyl chloride in water / xylene system catalyzed by CO_2 (CO) _3 was studied. Under the condition of constant CO pressure, the disappearance rate of benzyl chloride conformed to pseudo first order reaction kinetics The equation and the reaction rate are respectively proportional to the amounts of dicobalt octacarbonyl, benzyltrimethylammonium chloride and sodium hydroxide added. The reaction rate is determined by the acyl cobalt carbonyl (PhCH 2 CO-Co (CO ) _4) was decomposed by PhCH_2N ~ + (CH_3) _3OH ~ -. According to the kinetic results, the corresponding reaction mechanism was proposed and the reaction rate equation was deduced.