The influence of poisoning of MoOx-Pt catalyst by CO on the kinetics of H-2 oxidation reaction (HOR) at MoOx-Pt electrode in 0 5 mol dm(-3) HClO4 saturated with H-2 containing 100 ppm CO was examined on rotating disc electrode (RIDE) at 25 C MoOx-Pt nano catalyst prepared by the polyole method combined with MoOx post deposition was supported on commercial carbon black Vulcan XC 72 The MoOx-Pt/C catalyst was characterized by TEM technique The catalyst composition is very similar to the nominal one and post deposited MoOx species block only a small fraction of the active Pt particle surface area MoOx deposition on the carbon support can be ruled out from the EDAX results and from the low mobility of these oxides under used conditions Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations from a dual pathway model were derived to describe oxidation current potential behavior on RIDE over entire potential range at venous CO coverages The polarization RIDE curves were... fitted with derived polarization equations according to the proposed model The fitting showed that the HOR proceeded most likely via the Tafel-Volmer (TV) pathway A very high electrocatalytic activity observed at MoOx-Pt catalyst for the hydrogen oxidation reaction in the presence of 100 ppm CO is achieved through chemical surface reaction of adsorbed CO with Mo surface oxides
TY - JOUR
AU - Elezović, Nevenka R.
AU - Gajić-Krstajić, Ljiljana M
AU - Vračar, Ljiljana M
AU - Krstajić, Nedeljko V
PY - 2010
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/433
AB - The influence of poisoning of MoOx-Pt catalyst by CO on the kinetics of H-2 oxidation reaction (HOR) at MoOx-Pt electrode in 0 5 mol dm(-3) HClO4 saturated with H-2 containing 100 ppm CO was examined on rotating disc electrode (RIDE) at 25 C MoOx-Pt nano catalyst prepared by the polyole method combined with MoOx post deposition was supported on commercial carbon black Vulcan XC 72 The MoOx-Pt/C catalyst was characterized by TEM technique The catalyst composition is very similar to the nominal one and post deposited MoOx species block only a small fraction of the active Pt particle surface area MoOx deposition on the carbon support can be ruled out from the EDAX results and from the low mobility of these oxides under used conditions Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations from a dual pathway model were derived to describe oxidation current potential behavior on RIDE over entire potential range at venous CO coverages The polarization RIDE curves were fitted with derived polarization equations according to the proposed model The fitting showed that the HOR proceeded most likely via the Tafel-Volmer (TV) pathway A very high electrocatalytic activity observed at MoOx-Pt catalyst for the hydrogen oxidation reaction in the presence of 100 ppm CO is achieved through chemical surface reaction of adsorbed CO with Mo surface oxides
PB - Pergamon-Elsevier Science Ltd, Oxford
T2 - International Journal of Hydrogen Energy
T1 - Effect of chemisorbed CO on MoOx-Pt/C electrode on the kinetics of hydrogen oxidation reaction
EP - 12887
IS - 23
SP - 12878
VL - 35
DO - 10.1016/j.ijhydene.2010.09.004
ER -
@article{
author = "Elezović, Nevenka R. and Gajić-Krstajić, Ljiljana M and Vračar, Ljiljana M and Krstajić, Nedeljko V",
year = "2010",
abstract = "The influence of poisoning of MoOx-Pt catalyst by CO on the kinetics of H-2 oxidation reaction (HOR) at MoOx-Pt electrode in 0 5 mol dm(-3) HClO4 saturated with H-2 containing 100 ppm CO was examined on rotating disc electrode (RIDE) at 25 C MoOx-Pt nano catalyst prepared by the polyole method combined with MoOx post deposition was supported on commercial carbon black Vulcan XC 72 The MoOx-Pt/C catalyst was characterized by TEM technique The catalyst composition is very similar to the nominal one and post deposited MoOx species block only a small fraction of the active Pt particle surface area MoOx deposition on the carbon support can be ruled out from the EDAX results and from the low mobility of these oxides under used conditions Based on Tafel-Heyrovsky-Volmer mechanism the corresponding kinetic equations from a dual pathway model were derived to describe oxidation current potential behavior on RIDE over entire potential range at venous CO coverages The polarization RIDE curves were fitted with derived polarization equations according to the proposed model The fitting showed that the HOR proceeded most likely via the Tafel-Volmer (TV) pathway A very high electrocatalytic activity observed at MoOx-Pt catalyst for the hydrogen oxidation reaction in the presence of 100 ppm CO is achieved through chemical surface reaction of adsorbed CO with Mo surface oxides",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Hydrogen Energy",
title = "Effect of chemisorbed CO on MoOx-Pt/C electrode on the kinetics of hydrogen oxidation reaction",
pages = "12887-12878",
number = "23",
volume = "35",
doi = "10.1016/j.ijhydene.2010.09.004"
}
Elezović, N. R., Gajić-Krstajić, L. M., Vračar, L. M.,& Krstajić, N. V.. (2010). Effect of chemisorbed CO on MoOx-Pt/C electrode on the kinetics of hydrogen oxidation reaction. in International Journal of Hydrogen Energy
Pergamon-Elsevier Science Ltd, Oxford., 35(23), 12878-12887.
https://doi.org/10.1016/j.ijhydene.2010.09.004
Elezović NR, Gajić-Krstajić LM, Vračar LM, Krstajić NV. Effect of chemisorbed CO on MoOx-Pt/C electrode on the kinetics of hydrogen oxidation reaction. in International Journal of Hydrogen Energy. 2010;35(23):12878-12887.
doi:10.1016/j.ijhydene.2010.09.004 .
Elezović, Nevenka R., Gajić-Krstajić, Ljiljana M, Vračar, Ljiljana M, Krstajić, Nedeljko V, "Effect of chemisorbed CO on MoOx-Pt/C electrode on the kinetics of hydrogen oxidation reaction" in International Journal of Hydrogen Energy, 35, no. 23 (2010):12878-12887,
https://doi.org/10.1016/j.ijhydene.2010.09.004 . .
