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Polymerization and dechlorination and chloroethenes on copper ii smectite via radical cation intermediates



Polymerization and dechlorination and chloroethenes on copper ii smectite via radical cation intermediates



Environmental Science & Technology 23(2): 223-227



Trichloroethene (TCE) and other chloroethenes were found to react with Cu(II)-smectite in carbon tetrachloride at reflux temperature to form radical cations. This reaction was established by electron spin resonance spectroscopy which showed the development of the radical-cation signal and the concomitant loss of the paramagnetic Cu(II) signal. The final products of the reaction were polymeric compounds that contained oxygen and that had lost chlorine. Polymerization reactions occurred via a radical-cation mechanism. Water associated with Cu(II)-smectite appeared to react with the radical cations resulting in the addition of functional groups containing oxygen and the simultaneous loss of chloride. It is suggested that these reactions result in products significantly less toxic than their progenitors.

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Accession: 007666479

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