CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution

Authorized Users Only
2003
Authors
Tripković, Amalija
Štrbac, Svetlana
Popović, Ksenija
Article (Published version)
Metadata
Show full item record
Abstract
The effect of temperature on the kinetics of methanol oxidation on supported 47.5 wt% Pt, 54 and 33.5 wt% Pt/Ru catalysts was studied in 0.1 M NaOH at 295, 313 and 333 K using thin-film rotating disk electrode (RDE) method. The catalysts were characterized by ex situ STM prior to the voltammetric studies. It was found that the activity of those catalysts for methanol oxidation was determined by a delicate balance between the surface coverage by COad and by OHad species. Significantly faster kinetics at higher temperatures clearly indicates that methanol oxidation at the catalysts studied is highly activated process. The highest effect of temperature is obtained at the least active Pt catalyst which has the highest activation energy. On the contrary, the smallest temperature effect is detected on the most active Pt3Ru2 catalyst having the lowest activation energy. These phenomena have been explained by the important role of the adsorption energies of both reactive intermediates (COad an...d OHad).

Keywords:
RDE / Pt-catalyst / Pt/Ru-catalysts / STM / effect of temperature
Source:
Electrochemistry Communications, 2003, 5, 6, 484-490
Publisher:
  • Elsevier

DOI: 10.1016/S1388-2481(03)00111-5

ISSN: 1388-2481

WoS: 000183591400010

Scopus: 2-s2.0-0037937608
[ Google Scholar ]
52
48
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/129
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Tripković, Amalija
AU  - Štrbac, Svetlana
AU  - Popović, Ksenija
PY  - 2003
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/129
AB  - The effect of temperature on the kinetics of methanol oxidation on supported 47.5 wt% Pt, 54 and 33.5 wt% Pt/Ru catalysts was studied in 0.1 M NaOH at 295, 313 and 333 K using thin-film rotating disk electrode (RDE) method. The catalysts were characterized by ex situ STM prior to the voltammetric studies. It was found that the activity of those catalysts for methanol oxidation was determined by a delicate balance between the surface coverage by COad and by OHad species. Significantly faster kinetics at higher temperatures clearly indicates that methanol oxidation at the catalysts studied is highly activated process. The highest effect of temperature is obtained at the least active Pt catalyst which has the highest activation energy. On the contrary, the smallest temperature effect is detected on the most active Pt3Ru2 catalyst having the lowest activation energy. These phenomena have been explained by the important role of the adsorption energies of both reactive intermediates (COad and OHad).
PB  - Elsevier
T2  - Electrochemistry Communications
T1  - Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution
VL  - 5
IS  - 6
SP  - 484
EP  - 490
DO  - 10.1016/S1388-2481(03)00111-5
ER  - 
@article{
author = "Tripković, Amalija and Štrbac, Svetlana and Popović, Ksenija",
year = "2003",
abstract = "The effect of temperature on the kinetics of methanol oxidation on supported 47.5 wt% Pt, 54 and 33.5 wt% Pt/Ru catalysts was studied in 0.1 M NaOH at 295, 313 and 333 K using thin-film rotating disk electrode (RDE) method. The catalysts were characterized by ex situ STM prior to the voltammetric studies. It was found that the activity of those catalysts for methanol oxidation was determined by a delicate balance between the surface coverage by COad and by OHad species. Significantly faster kinetics at higher temperatures clearly indicates that methanol oxidation at the catalysts studied is highly activated process. The highest effect of temperature is obtained at the least active Pt catalyst which has the highest activation energy. On the contrary, the smallest temperature effect is detected on the most active Pt3Ru2 catalyst having the lowest activation energy. These phenomena have been explained by the important role of the adsorption energies of both reactive intermediates (COad and OHad).",
publisher = "Elsevier",
journal = "Electrochemistry Communications",
title = "Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution",
volume = "5",
number = "6",
pages = "484-490",
doi = "10.1016/S1388-2481(03)00111-5"
}
Tripković, A., Štrbac, S.,& Popović, K.. (2003). Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution. in Electrochemistry Communications
Elsevier., 5(6), 484-490.
https://doi.org/10.1016/S1388-2481(03)00111-5
Tripković A, Štrbac S, Popović K. Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution. in Electrochemistry Communications. 2003;5(6):484-490.
doi:10.1016/S1388-2481(03)00111-5 .
Tripković, Amalija, Štrbac, Svetlana, Popović, Ksenija, "Effect of temperature on the methanol oxidation at supported Pt and PtRu catalysts in alkaline solution" in Electrochemistry Communications, 5, no. 6 (2003):484-490,
https://doi.org/10.1016/S1388-2481(03)00111-5 . .

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutions/communitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB