Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol

The electroadsorption interactions between dilute propargyl alcohol and smooth platinum in 0.5 M H<sub>2</sub>SO<sub>4</sub> at 25° C have been investigated at different potentials. When the platinum electrode is covered by H atoms the hydrogenation of propargyl alcohol takes...

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Autores principales:	Arévalo, M. C., Pastor, E., González, S., Arévalo, A., Giordano, M. C., Arvia, Alejandro Jorge
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1990
Materias:	Ciencias Exactas Química Platinum Propargyl alcohol Electroadsorption
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/122417 https://www.sciencedirect.com/science/article/abs/pii/002207289087043J?via%3Dihub#!
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-122417
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Química Platinum Propargyl alcohol Electroadsorption
spellingShingle	Ciencias Exactas Química Platinum Propargyl alcohol Electroadsorption Arévalo, M. C. Pastor, E. González, S. Arévalo, A. Giordano, M. C. Arvia, Alejandro Jorge Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
topic_facet	Ciencias Exactas Química Platinum Propargyl alcohol Electroadsorption
description	The electroadsorption interactions between dilute propargyl alcohol and smooth platinum in 0.5 M H<sub>2</sub>SO<sub>4</sub> at 25° C have been investigated at different potentials. When the platinum electrode is covered by H atoms the hydrogenation of propargyl alcohol takes place. Otherwise, when the platinum electrode is held at a potential located in the double-layer region, the electroadsorption of propargyl alcohol involves a disruptive electro-oxidation yielding strongly bound adsorbed residues. The latter can be electrodesorbed presumably as carbon dioxide and protons. This process occurs within the O-electroadsorption potential range. The complete residue electrodesorption requires several voltammetric cycles. Competition between the hydrogenation reaction and the disruptive electroadsorption process can be observed at potentials where the platinum surface is partially covered by H atoms.
format	Articulo Articulo
author	Arévalo, M. C. Pastor, E. González, S. Arévalo, A. Giordano, M. C. Arvia, Alejandro Jorge
author_facet	Arévalo, M. C. Pastor, E. González, S. Arévalo, A. Giordano, M. C. Arvia, Alejandro Jorge
author_sort	Arévalo, M. C.
title	Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_short	Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_full	Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_fullStr	Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_full_unstemmed	Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
title_sort	potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol
publishDate	1990
url	http://sedici.unlp.edu.ar/handle/10915/122417 https://www.sciencedirect.com/science/article/abs/pii/002207289087043J?via%3Dihub#!
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Potential-dependent competitive processes on platinum in acid solution in the presence of propargyl alcohol

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