Electrocatalytic oxidation of ethanol on Sn(1−x)Ir(x)O2 electrodes in acid medium

Autor:	Karine Servat, Paulo Olivi, Kouakou Boniface Kokoh, Françoise Hahn, D. Profeti
Rok vydání:	2008
Předmět:	Electrolysis Reaction mechanism Ethanol General Chemical Engineering Inorganic chemistry Acetaldehyde Electrochemistry Catalysis law.invention chemistry.chemical_compound Acetic acid chemistry law Electrode Materials Chemistry
Zdroj:	Journal of Applied Electrochemistry. 38:837-843
ISSN:	1572-8838 0021-891X
DOI:	10.1007/s10800-008-9521-7
Popis:	The electrochemical oxidation of ethanol at Sn(1−x)Ir x O2 electrodes (with x = 0.01, 0.05, 0.1 and 0.3) was studied in 0.1 mol L−1 HClO4 solution. Electrolysis experiments were carried out and the reaction products were analyzed by Liquid Chromatography. It was found that the amounts of the reaction products depended on the composition of the electrode. In situ infrared reflectance spectroscopy measurements were performed to identify the adsorbed intermediates and to postulate a reaction mechanism for ethanol electrooxidation on these electrode materials. As evidence, acetaldehyde and acetic acid were formed through a successive reaction process. Carbon dioxide was also identified as the end product, showing that the cleavage of the carbon–carbon bond occurred. These results indicate that the synthesized catalysts are able to lead to the total combustion of organic compounds. Analysis of the water bending band at different potentials illustrated its role at the electrode interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5eab2e40dd87f1c0a5691e8b06ab0037 https://doi.org/10.1007/s10800-008-9521-7 Zobrazit plný text záznamu