Electrocarboxylation of α,ω-dihaloperfluoroalkanes and of perfluoroalkylhalides in a near-critical and supercritical CO2-methanol medium

Abstract The electrocatalytical carboxylations of some perfluoroalkylhalides and α,ω-dihaloperfluoroalkanes on copper and stainless steel electrodes in near-and supercritical CO 2 -methanol mixtures have been investigated. The main products and intermediates were determined. It was shown that the differences in the composition of products in these two cases indicate quite different catalytic activities of copper and stainless steel electrodes with regard to the electroreduction reactions of the intermediates and quite different adsorptions of these intermediates on the surfaces of the electrodes.