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Electrochemical evaluation of adsorption and oxidation of the carbon monoxide towards ordered intermetallic phases Pt-M (M=Mn, Pb, Sb e Sn); Avaliacao eletroquimica da adsorcao e oxidacao do monoxido de carbono sobre fases intermetalicas ordenadas Pt-M (M=Mn, Pb, Sb e Sn)

Abstract

This paper presents the experimental results obtained from the electrochemical evaluation of Pt ordered intermetallic phases (PtMn, PtPb, PtSb, PtSn) as electrode materials towards the CO oxidation reaction. The intermetallics showed a higher performance than pure Pt in the same experimental conditions. PtSn has presented the highest performance among the evaluated materials. There was not observed a clear relationship between the electrocatalytic activity of the materials and their ability in producing oxygen species at lower anodic potentials, suggesting that surface electronic density and structural characteristics of the electrode surfaces must be the properties to be investigated in order to explain the obtained results. (author)
Authors:
Nicolai, A L; Miguel-Junior, E; Silva, R I.V. da; Angelo, A C.D. [1] 
  1. UNESP, Bauru, SP (Brazil). Depto. de Quimica. Lab. de Eletrocatalise
Publication Date:
Jul 01, 2004
Product Type:
Conference
Report Number:
ETDE-BR-1170
Resource Relation:
Conference: 1. Energy week from UNICAMP; 2. WICaC: international workshop on fuel cells; AGRENER GD 2004: 5. meeting on energy meeting in rural areas and distributed generation, Campinas, SP (Brazil), 18-22 Oct 2004
Subject:
30 DIRECT ENERGY CONVERSION; 36 MATERIALS SCIENCE; CARBON MONOXIDE; ADSORPTION; ELECTROCHEMISTRY; INTERMETALLIC COMPOUNDS; OXIDATION; VOLTAMETRY; FUEL CELLS; EVALUATION; X-RAY DIFFRACTION; SCANNING ELECTRON MICROSCOPY; X-RAY PHOTOELECTRON SPECTROSCOPY
OSTI ID:
21247666
Research Organizations:
Universidade Estadual de Campinas (UNICAMP), SP (Brazil)
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
TRN: BR0903387
Availability:
Commercial reproduction prohibited; OSTI as DE21247666
Submitting Site:
BR
Size:
9 pages
Announcement Date:
Dec 19, 2009

Citation Formats

Nicolai, A L, Miguel-Junior, E, Silva, R I.V. da, and Angelo, A C.D. Electrochemical evaluation of adsorption and oxidation of the carbon monoxide towards ordered intermetallic phases Pt-M (M=Mn, Pb, Sb e Sn); Avaliacao eletroquimica da adsorcao e oxidacao do monoxido de carbono sobre fases intermetalicas ordenadas Pt-M (M=Mn, Pb, Sb e Sn). Brazil: N. p., 2004. Web.
Nicolai, A L, Miguel-Junior, E, Silva, R I.V. da, & Angelo, A C.D. Electrochemical evaluation of adsorption and oxidation of the carbon monoxide towards ordered intermetallic phases Pt-M (M=Mn, Pb, Sb e Sn); Avaliacao eletroquimica da adsorcao e oxidacao do monoxido de carbono sobre fases intermetalicas ordenadas Pt-M (M=Mn, Pb, Sb e Sn). Brazil.
Nicolai, A L, Miguel-Junior, E, Silva, R I.V. da, and Angelo, A C.D. 2004. "Electrochemical evaluation of adsorption and oxidation of the carbon monoxide towards ordered intermetallic phases Pt-M (M=Mn, Pb, Sb e Sn); Avaliacao eletroquimica da adsorcao e oxidacao do monoxido de carbono sobre fases intermetalicas ordenadas Pt-M (M=Mn, Pb, Sb e Sn)." Brazil.
@misc{etde_21247666,
title = {Electrochemical evaluation of adsorption and oxidation of the carbon monoxide towards ordered intermetallic phases Pt-M (M=Mn, Pb, Sb e Sn); Avaliacao eletroquimica da adsorcao e oxidacao do monoxido de carbono sobre fases intermetalicas ordenadas Pt-M (M=Mn, Pb, Sb e Sn)}
author = {Nicolai, A L, Miguel-Junior, E, Silva, R I.V. da, and Angelo, A C.D.}
abstractNote = {This paper presents the experimental results obtained from the electrochemical evaluation of Pt ordered intermetallic phases (PtMn, PtPb, PtSb, PtSn) as electrode materials towards the CO oxidation reaction. The intermetallics showed a higher performance than pure Pt in the same experimental conditions. PtSn has presented the highest performance among the evaluated materials. There was not observed a clear relationship between the electrocatalytic activity of the materials and their ability in producing oxygen species at lower anodic potentials, suggesting that surface electronic density and structural characteristics of the electrode surfaces must be the properties to be investigated in order to explain the obtained results. (author)}
place = {Brazil}
year = {2004}
month = {Jul}
}