156-60-5Relevant articles and documents
Ewald et al.
, p. 991,993 (1957)
Reductive capacity of natural reductants
Lee, Woojin,Batchelor, Bill
, p. 535 - 541 (2003)
The reductive capacities of soil minerals and Silawa soil for Cr(VI) and chlorinated ethylenes were determined and characterized to understand in situ treatment using these natural reductions. The reductive capacity of soil minerals for Cr(VI) was 3-16 times greater than that for tetrachloroethylene (PCE), indicating that Cr(VI) is more susceptible to the reduction by soil minerals than PCE. Green rust (GRSO4) showed the greatest reductive capacity for Cr(VI) and PCE followed by magnetite, pyrite, biotite, montmorillonite, and vermiculite. The major transformation product in pyrite and GRSO4 suspensions was acetylene rather than dichloroethylene (DCE) and vinyl chloride (VC). For VC degradation, ethylene was the main transformation product with a low concentration of ethane observed. Fe(II) content in soil minerals was directly proportional to the reductive capacity of soil minerals for Cr(VI) and PCE, suggesting that Fe(II) content is an important factor that significantly affects reductive transformations of target contaminants in natural systems.
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Rabinovich,Hulatt
, p. 592 (1957)
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Composition For the Vapor Phase Dehydrohalogenation of 1,1,2-Trihaloethane To 1,1-Dihaloethylene and Methods For Preparing and Using Such Composition
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Page/Page column 7, (2008/12/07)
Described are compositions adapted to catalyze the vapor phase dehydrohalogenation of 1,1,2-trihaloethane to 1,1-dihaloethylene, e.g., 1,1,2-trichloroethane to vinylidene chloride. These materials include activated carbon and at least one benzimidazole-containing material defined herein as including benzimidazole, a derivative thereof, a salt thereof or mixtures thereof. Also described are methods for producing and using these catalytic compositions.
Method for recovering trans-1,2-dichloroethene
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Page/Page column 6-7, (2008/06/13)
Describes a method for recovering trans-1,2-dichloroethene from a liquid feed composition comprising both the cis- and trans-isomers of 1,2-dichloroethene and contaminating amounts of other chlorinated hydrocarbons, e.g., lower alkyl chlorinated hydrocarbons, such as C1-C2 chlorinated hydrocarbons. In one of the described methods, the liquid feed composition is introduced into a first distillation column 10 wherein the stereoisomers and chlorinated hydrocarbons more volatile than the stereoisomers are removed as overhead 12 and charged to a second distillation column 20. In column 20, the stereoisomers are separated from the more volatile chlorinated hydrocarbons, and a bottoms fraction 24 comprising the stereoisomers are charged to a reaction distillation column 30 wherein the cis-isomer, is isomerized to the trans-isomer in the liquid phase and in the presence of an organic free-radical initiator, e.g., an azonitrile initiator. Substantially pure trans-1;2-dichloroethene is recovered as overhead 32 from reaction distillation column 30.