Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst
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2005
Authors
Lović, JelenaTripković, Amalija
Gojković, Snežana Lj.
Popović, Ksenija
Tripković, Dušan
Olszewski, Piotr K.
Kowal, Andrzej
Article (Published version)
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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 cellsSource:
Journal of Electroanalytical Chemistry, 2005, 581, 2, 294-302Publisher:
- Elsevier Science Sa, Lausanne
DOI: 10.1016/j.jelechem.2005.05.002
ISSN: 1572-6657
WoS: 000230712700018
Scopus: 2-s2.0-21844451182
Institution/Community
Tehnološko-metalurški fakultetTY - 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 - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/781 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 Science Sa, Lausanne T2 - Journal of Electroanalytical Chemistry T1 - Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst EP - 302 IS - 2 SP - 294 VL - 581 DO - 10.1016/j.jelechem.2005.05.002 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 Science Sa, Lausanne", journal = "Journal of Electroanalytical Chemistry", title = "Kinetic study of formic acid oxidation on carbon-supported platinum electrocatalyst", pages = "302-294", number = "2", volume = "581", doi = "10.1016/j.jelechem.2005.05.002" }
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 Science Sa, Lausanne., 581(2), 294-302. https://doi.org/10.1016/j.jelechem.2005.05.002
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 .
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 . .