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Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst

Authorized Users Only
2005
Authors
Lović, Jelena
Tripković, Amalija
Gojković, Snežana Lj.
Popović, Ksenija
Tripković, Dušan
Olszewski, Piotr K.
Kowal, Andrzej
Article (Published version)
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Abstract
Oxidation of formic acid on the platinum catalyst supported on high area carbon was investigated by potent iodynamic and quasi-steady-state polarization measurements. It was found that the poisoning of the reaction occurred both in the hydrogen region and in the double-layer region, but poisons were formed faster at lower potentials. Kinetics of the reaction was consistent with the dual path mechanism. At lower potentials HCOOH was oxidized to CO, at the Pt sites uncovered by COads. If high coverage by the poisoning species was attained, the reaction reached the limiting current plateau and further increase of the Current densities started at the potential of COads oxidation. Kinetic parameters of the HCOOH oxidation suggested that the rate determining step was the transfer of the first electron from HCOOHads, which was adsorbed under the Temkin conditions, Oxidation of formic acid became pH-dependent reaction in the electrolytes of pH LT 1 with the reaction order with respect to H+ ...ions of about - 0.8.

Keywords:
formic acid / electrochemical oxidation / platinum supported catalysts / fuel cells
Source:
Journal of Electroanalytical Chemistry, 2005, 581, 2, 294-302
Publisher:
  • Elsevier

DOI: 10.1016/j.jelechem.2005.05.002

ISSN: 1572-6657

WoS: 000230712700018

Scopus: 2-s2.0-21844451182
[ Google Scholar ]
183
173
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/209
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Lović, Jelena
AU  - Tripković, Amalija
AU  - Gojković, Snežana Lj.
AU  - Popović, Ksenija
AU  - Tripković, Dušan
AU  - Olszewski, Piotr K.
AU  - Kowal, Andrzej
PY  - 2005
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/209
AB  - Oxidation of formic acid on the platinum catalyst supported on high area carbon was investigated by potent iodynamic and quasi-steady-state polarization measurements. It was found that the poisoning of the reaction occurred both in the hydrogen region and in the double-layer region, but poisons were formed faster at lower potentials. Kinetics of the reaction was consistent with the dual path mechanism. At lower potentials HCOOH was oxidized to CO, at the Pt sites uncovered by COads. If high coverage by the poisoning species was attained, the reaction reached the limiting current plateau and further increase of the Current densities started at the potential of COads oxidation. Kinetic parameters of the HCOOH oxidation suggested that the rate determining step was the transfer of the first electron from HCOOHads, which was adsorbed under the Temkin conditions, Oxidation of formic acid became pH-dependent reaction in the electrolytes of pH  LT  1 with the reaction order with respect to H+ ions of about - 0.8.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst
VL  - 581
IS  - 2
SP  - 294
EP  - 302
DO  - 10.1016/j.jelechem.2005.05.002
UR  - Conv_2317
ER  - 
@article{
author = "Lović, Jelena and Tripković, Amalija and Gojković, Snežana Lj. and Popović, Ksenija and Tripković, Dušan and Olszewski, Piotr K. and Kowal, Andrzej",
year = "2005",
abstract = "Oxidation of formic acid on the platinum catalyst supported on high area carbon was investigated by potent iodynamic and quasi-steady-state polarization measurements. It was found that the poisoning of the reaction occurred both in the hydrogen region and in the double-layer region, but poisons were formed faster at lower potentials. Kinetics of the reaction was consistent with the dual path mechanism. At lower potentials HCOOH was oxidized to CO, at the Pt sites uncovered by COads. If high coverage by the poisoning species was attained, the reaction reached the limiting current plateau and further increase of the Current densities started at the potential of COads oxidation. Kinetic parameters of the HCOOH oxidation suggested that the rate determining step was the transfer of the first electron from HCOOHads, which was adsorbed under the Temkin conditions, Oxidation of formic acid became pH-dependent reaction in the electrolytes of pH  LT  1 with the reaction order with respect to H+ ions of about - 0.8.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst",
volume = "581",
number = "2",
pages = "294-302",
doi = "10.1016/j.jelechem.2005.05.002",
url = "Conv_2317"
}
Lović, J., Tripković, A., Gojković, S. Lj., Popović, K., Tripković, D., Olszewski, P. K.,& Kowal, A.. (2005). Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst. in Journal of Electroanalytical Chemistry
Elsevier., 581(2), 294-302.
https://doi.org/10.1016/j.jelechem.2005.05.002
Conv_2317
Lović J, Tripković A, Gojković SL, Popović K, Tripković D, Olszewski PK, Kowal A. Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst. in Journal of Electroanalytical Chemistry. 2005;581(2):294-302.
doi:10.1016/j.jelechem.2005.05.002
Conv_2317 .
Lović, Jelena, Tripković, Amalija, Gojković, Snežana Lj., Popović, Ksenija, Tripković, Dušan, Olszewski, Piotr K., Kowal, Andrzej, "Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst" in Journal of Electroanalytical Chemistry, 581, no. 2 (2005):294-302,
https://doi.org/10.1016/j.jelechem.2005.05.002 .,
Conv_2317 .

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