Anodic oxidation of methane at noble metal electrodes: an ‘in situ’ surface enhanced infrared spectroelectrochemical study

Autor:	C.A. Melendres, Françoise Hahn
Rok vydání:	2001
Předmět:	Infrared General Chemical Engineering Inorganic chemistry Infrared spectroscopy chemistry.chemical_element engineering.material Electrochemistry Rhodium Transition metal chemistry engineering Noble metal Spectroscopy Platinum
Zdroj:	Electrochimica Acta. 46:3525-3534
ISSN:	0013-4686
DOI:	10.1016/s0013-4686(01)00649-1
Popis:	The mechanism of electrooxidation of methane at 25 °C in 0.5 M HClO4 on the noble metal electrodes Pt, Au, Pd, Ru and Rh has been investigated by ‘in situ’ infrared spectroscopy. The final product of oxidation was found to be CO2 in all cases. Using the technique of surface enhanced infrared absorption spectroscopy and deuterated water solutions, it has been possible to detect the presence of adsorbed intermediates such as CO and CHO (or COOH) for the first time. The infrared signal enhancement observed could be accounted for by considering the increase in the surface area of the electrodeposited metals as indicated by the cyclic voltammograms. Pt and Ru appear to have the highest, and Au the lowest, electrocatalytic activity among the metals studied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::35df377e4fe79defb9bcb064b6635350 https://doi.org/10.1016/s0013-4686(01)00649-1 Zobrazit plný text záznamu Full Text from ScienceDirect