Effective electrocatalytic reduction of propene at a Pt electrode in strongly acidic solutions with Mo(VI) oxo-species

An appreciable enhancement of the rate of propene electroreduction was discovered under CV conditions on a polycrystalline Pt electrode in a strongly acidified solution containing cationic Mo(VI) oxo-species. Simultaneously, the electroreduction of these species was found to be remarkably more effec...

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Bibliographic Details
Published in:Electrochemistry communications 2012-10, Vol.24, p.5-8
Main Authors: Bełtowska-Brzezinska, Maria, Węsierski, Tomasz, Łuczak, Teresa
Format: Article
Language:English
Subjects:
Chemistry
Electrocatalysis
Electrochemistry
Electroreduction
Exact sciences and technology
General and physical chemistry
Kinetics and mechanism of reactions
Propene system
Pt/molybdenum(VI)
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Summary:An appreciable enhancement of the rate of propene electroreduction was discovered under CV conditions on a polycrystalline Pt electrode in a strongly acidified solution containing cationic Mo(VI) oxo-species. Simultaneously, the electroreduction of these species was found to be remarkably more effective in the presence of propene in comparison with that obtained using a supporting electrolyte without the alkene. Evidence was provided that the catalytic effect results from the continuous regeneration of the electroactive molybdenum moieties via a non-faradaic reaction between propene and the reduced forms produced at the electrode/solution interface from the parent Mo(VI) cationic species in the preceding one and three electron-transfer reactions. ► Kinetics of propene electroreduction on Pt in acidic solutions ► Electrocatalytic effect in the Pt/Mo(VI)–propene system ► Efficient voltammetric detection of propene and of Mo(VI) oxo-species
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2012.07.028