Record Display for the EPA National Library Catalog


Main Title Catalytic Hydrodechlorination of Polychlorinated Pesticides and Related Substances: An Executive Summary.
CORP Author Ebon Research Systems, Silver Spring, Md.;Municipal Environmental Research Lab., Cincinnati, Ohio.
Year Published 1977
Report Number EPA-68-03-2460; EPA/600/j8-77/013;
Stock Number PB-272 603
Additional Subjects Insecticides ; Chlorine organic compounds ; Catalysis ; Aldrin ; Dieldrin ; DDT ; Chemical reactors ; Pesticides ; Laboratory equipment ; Chemical reactions ; Reaction kinetics ; Mass spectroscopy ; Hydrogenation ; Dechlorination ; Hydrodechlorination ; Environmental chemical substitutes ; Procedures ; Aroclor 1248 ; DDE insecticide ; Toxaphene ; Dichlorodiphenyltrichloroethane ; Ethylene/bis(chlorophenyl)-dichloro ; Dimethanonaphthalenes
Library Call Number Additional Info Location Last
NTIS  PB-272 603 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 61p
A study was undertaken of the catalytic conversion of chlorinated pesticides and other undesirable chlorinated compounds to acceptable compounds. This study shows that chlorine can be catalytically removed and replaced by hydrogen to produce relatively non-toxic hydrocarbons. The batch process involves use of a supported nickel catalyst, ethanol as solvent, and sodium hydroxide as an acid-acceptor of the hydrogen chloride by-product. A reactivity sequence is established based on carbon-chlorine bonding wherein olefinic chlorine is the least reactive. Reaction models are determined for Aroclor 1248 and DDE. Removal of ortho-substituted chlorine is the limiting reaction in hydrodechlorination of Aroclor. Aldrin and dieldrin are the most difficult compounds to hydrodechlorinate because of steric hindrance. Removal of aromatic chlorine is the limiting reaction in the hydrodechlorination of DDT and DDE.