Electroreduction of 1,1,2-Trifluorotrichloroethane on Acetylene-Black, Hydrophobized Electrodes in Aqueous Solutions: The Effect of the Electrolyte Nature

G. A. Kolyagin , G. V. Kornienko , I. S. Vasil’eva
Российский электрохимический журнал
Abstract / Full Text

The effects exerted on the electroreduction of 1,1,2-trifluorotrichloroethane to trifluorochloroethylene by chlorides of alkali metals and ammonium; lithium perchlorate; and additives of tetrabutylammoniumbromide, tetraethylammonium chloride, and tetraethylammonium perchlorate to solutions of these salts; areinvestigated. The electroreduction is conducted on acetylene-black, hydrophobized electrodes in aqueous solutions. An increase in the size of the alkali-metal cation of an indifferent electrolyte is shown to promote thedechlorination process. The current efficiency grows, and electrode polarization diminishes. The tetraalkylammonium-salt additives to electrolytes under study also decrease electrode polarization and increase the currentefficiency for trifluorochloroethylene. However, the action of tetraalkylammonium cations is less pronouncedin the presence of perchlorate ions.