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首页> 外文期刊>Journal of nuclear science and technology >Chain Dechlorination of Organic Chlorinated Compounds in Alcohol Solutions by 60Co γ-Rays, (II)Chlorinated Benzenes in Alkaline 2-Propanol Solutions
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Chain Dechlorination of Organic Chlorinated Compounds in Alcohol Solutions by 60Co γ-Rays, (II)Chlorinated Benzenes in Alkaline 2-Propanol Solutions

机译：60Coγ射线中醇溶液中有机氯化化合物的链脱氯，（II）碱性2-丙醇溶液中的氯化苯

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Chlorinated benzenes dissolved in deoxygenated alkaline 2-propanol were dechlorinated by irradiating with 60Co γ-rays to produce the lower chlorinated benzenes and chloride ion. The yield of dechlorination was found to depend on the number of chlorine atoms on the benzene ring, the G(Cl-)-values being, for instance, 6, 500, 480 and 2.0 for 0.07 M penta-chlorobenzene, 1, 2, 4-trichlorobenzene, and monochlorobenzene, respectively, in 0.2 M KOH-2-propanol solution. In contrast, the values of G(Cl-) differed little between the isomers of trichlorobenzene. The large difference in G(Cl-) according to the number of chlorine atoms can be explained by considering the redox potential of the chlorinated benzenes and the ketyl radical ion. Trichlorobenzene is dechlorinated to dichlorobenzene and then to monochlorobenzene while producing potassium chloride and acetone, and consuming hydroxide ion. In the experiment, some chlorinated benzene derivatives were observed to be generated in the course of this process--probably dichlorophenyl-2-propanol and monochlorophenyl-2-pro-panol, judging from observation by gaschromatograph-mass spectrometer and from the path-way of formation. The observation also indicated the presence of dichloropheny1-2-propanol in predominant amounts in 1, 3, 5-trichlorobenzene solution, but only in a small fraction in 1, 2, 3-trichlorobenzene.
机译：通过用60COγ射线照射溶解在脱氧碱性2-丙醇中的氯化苯通过用60COγ射线而产生下氯化苯和氯离子。发现脱氯的产率取决于苯环上的氯原子数，G（Cl - ） - 值为6,500,480和2.0，适用于0.07M Penta-氯苯，1,2，分别在0.2M KOH-2-丙醇溶液中分别为4-三氯苯和单氯苯。相反，G（CL-）的值在三氯苯异构体之间不同。可以通过考虑氯化苯的氧化还原电位和乙基自由基离子来解释根据氯原子数的G（CL-）的大差异。将三氯苯磺苯脱氯，然后向二氯苯磺酸脱氯，同时生产氯化钾和丙酮，并消耗氢氧化物离子。在实验中，观察到一些氯化苯衍生物在该过程的过程中产生 - 可能是二氯苯基-2-丙醇和二氯苯基-2-Pro-panol，从汽轮谱系 - 质谱仪和路径的观察判断形成。该观察结果还表明，在1,3,5-三氯苯溶液中的主要量，但仅在1,2,3-三氯苯中的小部分中存在二氯苯镁1-2-丙醇。

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