Dehalogenation of three chlorinated hydrocarbons: Amine-assisted versus metal-chelate assisted
Titel:
Dehalogenation of three chlorinated hydrocarbons: Amine-assisted versus metal-chelate assisted
Auteur:
Hewes, Kenneth A. Martin, Dean F.
Verschenen in:
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
Paginering:
Jaargang 19 (1984) nr. 6 pagina's 713-724
Jaar:
1984-08
Inhoud:
Metal chelate compounds of the type M(o-OC6H4CH=NC4H9)2 (M = Ni, Cu, Zn, etc.) participate in the dehalogenation of chloroform in the presence of ethylene diamine or tetramethyienediamine under homogeneous conditions and at elevated temperatures. Both an amine-assisted and a metal-assisted pathway are recognized on the basis of rate expression. In contrast, only an amine-assisted pathway was observed for dichloromethane. Under non-homogeneous conditions, however, i.e., using pure solvent, dehalogenation led to [M(diamine)n]Cl2 . Te importance of solubility as a driving force is considered as are the implications in the design of agents that will effect dehalogenation of chlorinated methanes.
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