The influence of acetic acid on the ethanol electrooxidation on a platinum electrode


Autoria(s): PRIETO, Mauricio J.; TREMILIOSI-FILHO, Germano
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2011

Resumo

In the presented work, the evaluation of the influence of acetic acid in the electrochemical environment on the ethanol electro-oxidation reaction on a polycrystalline platinum electrode is presented for the first time. Using cyclic voltammetry. chronoamperometry and in situ Fourier Transformed IR spectroscopy (FTIR) it was demonstrated that an inhibition of the ethanol oxidation reaction occurs for bulk acetic acid concentrations of the order 0.1 mu mol L(-1) -5 mmol L(-1). This inhibition effect is related to the decrease of CO(2) and acetaldehyde production as confirmed by spectroscopic results. (C) 2011 Elsevier B.V. All rights reserved.

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

CNPq Conselho Nacional de Pesquisa

FAPESP Fundacao de Amparo a Pesquisa do Estado de Sao Paulo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Identificador

ELECTROCHEMISTRY COMMUNICATIONS, v.13, n.6, p.527-529, 2011

1388-2481

http://producao.usp.br/handle/BDPI/31574

10.1016/j.elecom.2011.02.002

http://dx.doi.org/10.1016/j.elecom.2011.02.002

Idioma(s)

eng

Publicador

ELSEVIER SCIENCE INC

Relação

Electrochemistry Communications

Direitos

restrictedAccess

Copyright ELSEVIER SCIENCE INC

Palavras-Chave #Platinum #Ethanol #FTIR #Acetic acid #Poisoning #SINGLE-CRYSTAL ELECTRODES #TIME FTIR SPECTROSCOPY #IN-SITU FTIR #POLYCRYSTALLINE PLATINUM #ELECTROCHEMICAL OXIDATION #ADSORPTION #SURFACES #ALLOY #ELECTROCATALYSTS #MECHANISM #Electrochemistry
Tipo

article

original article

publishedVersion