【摘要】 采用批处理实验方法 ,在缺氧还原的环境下对无定形FeS转化六六六的动力学进行了研究 ,结果表明 ,无定形FeS水溶液体系 (pH值 8 3 0 )可以将六六六的γ 异构体林丹转化为低氯化合物三氯苯、二氯苯和氯苯 ,并且产物的形成有异构体选择性 ;检测到的中间产物为五氯环己烯、四氯环己烯和二氯环己二烯 ,并提出相应的转化路径和反应机理 ,以说明溶液中的动态变化过程 ;反应动力学遵从准一级速率反应 ;反应机理推测为去氯化氢反应和双氯消除反应更多还原

【Abstract】 Batch experimental methods were used for kinetics study of transformation of γ-hexachlorocyclohexane(γ-HCH)by amorphous FeS under anaerobic environment at pH 8.30.The results showed that γ-HCH could be transformed to less chlorinated compounds.One isomer predominated over the others among the products,and trichlobenzenes,dichlobenzenes and chlorobenzene are the final products.The detectable intermediates include pentachlorocyclohexene,tetrachlorocyclohexene and dichlohexadiene.Four pathways were proposed,and the kinetics of γ-HCH transformation in FeS suspension fit to pseudo-first order reaction.Two mechanisms were suggested as dehydrochlorination and dichloroelmination in this study.更多还原