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  • Investigation of DBS electro-oxidation reaction in the aqueous-organic solution of LiClO4.

Investigation of DBS electro-oxidation reaction in the aqueous-organic solution of LiClO4.

Journal of hazardous materials (2009-11-17)
Witold Darlewski, Stanisław Popiel, Tomasz Nalepa, Waldemar Gromotowicz, Rafał Szewczyk, Romuald Stankiewicz
ABSTRACT

A process of dibutyl sulphide (DBS) electro-oxidation using electrolysis and cyclic voltamperometry was investigated in water-methanol solution using different electrodes (platinum, boron doped diamond, graphite and glassy carbon). Obtained results indicate that the DBS electro-oxidation process is irreversible in voltamperometric conditions. It was shown that during DBS electrolytic oxidation on Pt, at the low anode potential (1.8 V), DBS was oxidized to sulphoxide and sulphone. Electrolysis at higher potential (up to 3.0 V) resulted in complete DBS oxidation and formation of various products, including: butyric acid, sulphuric acid, butanesulphinic acid, butanesulphonic acid, identified using gas chromatography (GC-AED) and mass spectrometry (GC-MS) methods.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Lithium perchlorate, SAJ special grade, ≥99.0%
Sigma-Aldrich
Lithium perchlorate, 99.99% trace metals basis
Sigma-Aldrich
Lithium perchlorate, purum p.a., ≥98.0% (calc. based on dry substance, T), powder
Sigma-Aldrich
Lithium perchlorate, ACS reagent, ≥95.0%
Sigma-Aldrich
Lithium perchlorate, battery grade, dry, 99.99% trace metals basis