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Radiation-Initiated Chlorination of 1, 2-Dichloroethane

Abstract

Radiation-initiated chlorination of 1,2-dichloroethane was carried out with a batch system to study the chlorination reaction in the laboratory and also with a flow system to obtain information on its scale-up. It was found that the direct chlorination of 1,2-dichloroethane in the presence of gamma radiation takes place by a free-radical chain reaction with a high G-value of the order of 10{sup 5}. Successive chlorination of 1,2-dichloroethane gives 1,1, 2-trichloroethane, 1,1,1, 2- and 1,1, 2, 2-tetrachloroethane, pentachloroethane and hexachloroethane. No products other than these polychloro ethanes were detected. The composition of the reaction products depends on the degree of chlorination; it is independent of the dose rate and the chlorine feed rate. A promising application of this process is to produce trichloroethylene and perchloroethylene by thermal dehydrochlorination of a mixture of tetrachloroethane and pentachloroethane. The optimum conditions of producing these compounds with high yields depend on the feed rate of 1, 2-dichloroethane and chlorine gas, the dose rate and the reaction temperature. A pilot experimental facility with a 2-litre reaction vessel has been completed and is now in operation. (author)
Authors:
Danno, A.; Abe, T.; Washino, M.; Souda, T.; Shimada, K. [1] 
  1. Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Watanuki-machi, Takasaki-shi, Gunma-ken (Japan)
Publication Date:
Dec 15, 1969
Product Type:
Conference
Report Number:
IAEA-SM-123/2
Resource Relation:
Conference: Symposium on the Utilization of Large Radiation Sources and Accelerators in Industrial Processing, Munich (Germany), 18-22 Aug 1969; Other Information: 7 refs., 10 figs., 1 tab.; Related Information: In: Large Radiation Sources for Industrial Processes. Proceedings of a Symposium on the Utilization of Large Radiation Sources and Accelerators in Industrial Processing| 713 p.
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; 07 ISOTOPES AND RADIATION SOURCES; CHAIN REACTIONS; CHLORINATION; CHLORINE; DOSE RATES; ETHANE; G VALUE; GAMMA RADIATION; ORGANIC CHLORINE COMPOUNDS; RADICALS
OSTI ID:
22202962
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M4124023873
Submitting Site:
INIS
Size:
page(s) 3-17
Announcement Date:
Mar 06, 2014

Citation Formats

Danno, A., Abe, T., Washino, M., Souda, T., and Shimada, K. Radiation-Initiated Chlorination of 1, 2-Dichloroethane. IAEA: N. p., 1969. Web.
Danno, A., Abe, T., Washino, M., Souda, T., & Shimada, K. Radiation-Initiated Chlorination of 1, 2-Dichloroethane. IAEA.
Danno, A., Abe, T., Washino, M., Souda, T., and Shimada, K. 1969. "Radiation-Initiated Chlorination of 1, 2-Dichloroethane." IAEA.
@misc{etde_22202962,
title = {Radiation-Initiated Chlorination of 1, 2-Dichloroethane}
author = {Danno, A., Abe, T., Washino, M., Souda, T., and Shimada, K.}
abstractNote = {Radiation-initiated chlorination of 1,2-dichloroethane was carried out with a batch system to study the chlorination reaction in the laboratory and also with a flow system to obtain information on its scale-up. It was found that the direct chlorination of 1,2-dichloroethane in the presence of gamma radiation takes place by a free-radical chain reaction with a high G-value of the order of 10{sup 5}. Successive chlorination of 1,2-dichloroethane gives 1,1, 2-trichloroethane, 1,1,1, 2- and 1,1, 2, 2-tetrachloroethane, pentachloroethane and hexachloroethane. No products other than these polychloro ethanes were detected. The composition of the reaction products depends on the degree of chlorination; it is independent of the dose rate and the chlorine feed rate. A promising application of this process is to produce trichloroethylene and perchloroethylene by thermal dehydrochlorination of a mixture of tetrachloroethane and pentachloroethane. The optimum conditions of producing these compounds with high yields depend on the feed rate of 1, 2-dichloroethane and chlorine gas, the dose rate and the reaction temperature. A pilot experimental facility with a 2-litre reaction vessel has been completed and is now in operation. (author)}
place = {IAEA}
year = {1969}
month = {Dec}
}