Enhancement of Toluene Formation by Water during Electrolysis of Chlorobenzene at Pt Electrode in Acetonitrile

Nagahiro HOSHI; Toshihiro HARADA; Masashi NAKAMURA; Daiki NOZU

doi:10.5796/electrochemistry.75.715

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Enhancement of Toluene Formation by Water during Electrolysis of Chlorobenzene at Pt Electrode in Acetonitrile

Nagahiro HOSHI, Toshihiro HARADA, Masashi NAKAMURA, Daiki NOZU

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Keywords: Dechlorination of Chlorobenzene, Toluene, Acetonitrile, Methane, Platinum Electrode, Concentration of Water

JOURNAL FREE ACCESS

2007 Volume 75 Issue 9 Pages 715-718

DOI https://doi.org/10.5796/electrochemistry.75.715

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Abstract

Chlorobenzene was electrolyzed on polycrystalline platinum electrode in acetonitrile with various water concentrations at −3.02 V(vs. Fc/Fc⁺). Formation rate of the reduction products depend on water concentration remarkably. Benzene is a main product at [H₂O]≤0.3 mol dm⁻³. At [H₂O]≥0.35 mol dm⁻³, toluene is obtained as well as benzene. Partial current density of toluene gives maximum at [H₂O]=0.44 mol dm⁻³. Formation of toluene closely relates with production of methane resulting from the decomposition of acetonitrile.

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