ELECTROCHEMICAL PROCESSES OF ADSORBED CHLOROBENZENE AND FLUOROBENZENE ON A PLATINUM POLYCRYSTALLINE ELECTRODE

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Authors	KEBRLOVÁ Natálie JANDERKA Pavel TRNKOVÁ Libuše
Year of publication	2009
Type	Article in Periodical
Magazine / Source	Collect. Czech. Chem. Commun.
MU Faculty or unit	Faculty of Science
Citation
Field	Physical chemistry and theoretical chemistry
Keywords	Electrochemical degradation; Hydrogenation; Dehalogenation; Fluorobenzene; Chlorobenzene; Differential electrochemical mass spectrometry (DEMS); Cyclic voltammetry (CV)
Description	The electrode processes of chlorobenzene (CB) and fluorobenzene (FB) on polycrystalline platinum (Pt pc) electrode in sulfuric acid were studied by differential electrochemical mass spectrometry (DEMS). Contrary to the oxidation of adsorbed benzene on Pt surface, the oxidation of adsorbed CB and FB in the oxygen adsorption region does not provide solely CO2 as the final product. At negative polarization potentials CB and FB were desorbed under dehalogenation. While in the case of FB only benzene was detected, CB gave intermediates besides benzene. The final product of stepwise hydrogenation of these species was cyclohexane.
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