Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol
Platinum catalysts supported on carbon xerogel and carbon black (Vulcan) were synthesized with the aim of investigating the influence of the characteristics of the support on the electrochemical performance of the catalysts. Three synthesis methods were compared: an impregnation method with two diff...
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doaj-f934615ebf2e47879350c27144d151822020-11-24T22:35:19ZengMDPI AGCatalysts2073-43442015-03-015139240510.3390/catal5010392catal5010392Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of MethanolCinthia Alegre0María Elena Gálvez1Rafael Moliner2María Jesús Lázaro3Instituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, SpainInstituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, SpainInstituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, SpainInstituto de Carboquímica (CSIC), Miguel Luesma Castán 4, 50018 Zaragoza, SpainPlatinum catalysts supported on carbon xerogel and carbon black (Vulcan) were synthesized with the aim of investigating the influence of the characteristics of the support on the electrochemical performance of the catalysts. Three synthesis methods were compared: an impregnation method with two different reducing agents, sodium borohydride and formic acid, and a microemulsion method, in order to study the effect of the synthesis method on the physico-chemical properties of the catalysts. X-ray diffraction and transmission electron microscopy were applied. Cyclic voltammetry and chronoamperometry were used for studying carbon monoxide and methanol oxidation. Catalysts supported on carbon xerogel presented higher catalytic activities towards CO and CH3OH oxidation than catalysts supported on Vulcan. The higher mesoporosity of carbon xerogel was responsible for the favored diffusion of reagents towards catalytic centers.http://www.mdpi.com/2073-4344/5/1/392Pt catalystsmethanol electro-oxidationcarbon xerogelcarbon black |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cinthia Alegre María Elena Gálvez Rafael Moliner María Jesús Lázaro |
spellingShingle |
Cinthia Alegre María Elena Gálvez Rafael Moliner María Jesús Lázaro Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol Catalysts Pt catalysts methanol electro-oxidation carbon xerogel carbon black |
author_facet |
Cinthia Alegre María Elena Gálvez Rafael Moliner María Jesús Lázaro |
author_sort |
Cinthia Alegre |
title |
Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol |
title_short |
Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol |
title_full |
Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol |
title_fullStr |
Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol |
title_full_unstemmed |
Influence of the Synthesis Method for Pt Catalysts Supported on Highly Mesoporous Carbon Xerogel and Vulcan Carbon Black on the Electro-Oxidation of Methanol |
title_sort |
influence of the synthesis method for pt catalysts supported on highly mesoporous carbon xerogel and vulcan carbon black on the electro-oxidation of methanol |
publisher |
MDPI AG |
series |
Catalysts |
issn |
2073-4344 |
publishDate |
2015-03-01 |
description |
Platinum catalysts supported on carbon xerogel and carbon black (Vulcan) were synthesized with the aim of investigating the influence of the characteristics of the support on the electrochemical performance of the catalysts. Three synthesis methods were compared: an impregnation method with two different reducing agents, sodium borohydride and formic acid, and a microemulsion method, in order to study the effect of the synthesis method on the physico-chemical properties of the catalysts. X-ray diffraction and transmission electron microscopy were applied. Cyclic voltammetry and chronoamperometry were used for studying carbon monoxide and methanol oxidation. Catalysts supported on carbon xerogel presented higher catalytic activities towards CO and CH3OH oxidation than catalysts supported on Vulcan. The higher mesoporosity of carbon xerogel was responsible for the favored diffusion of reagents towards catalytic centers. |
topic |
Pt catalysts methanol electro-oxidation carbon xerogel carbon black |
url |
http://www.mdpi.com/2073-4344/5/1/392 |
work_keys_str_mv |
AT cinthiaalegre influenceofthesynthesismethodforptcatalystssupportedonhighlymesoporouscarbonxerogelandvulcancarbonblackontheelectrooxidationofmethanol AT mariaelenagalvez influenceofthesynthesismethodforptcatalystssupportedonhighlymesoporouscarbonxerogelandvulcancarbonblackontheelectrooxidationofmethanol AT rafaelmoliner influenceofthesynthesismethodforptcatalystssupportedonhighlymesoporouscarbonxerogelandvulcancarbonblackontheelectrooxidationofmethanol AT mariajesuslazaro influenceofthesynthesismethodforptcatalystssupportedonhighlymesoporouscarbonxerogelandvulcancarbonblackontheelectrooxidationofmethanol |
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