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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