Development of Ternary and Quaternary Catalysts for the Electrooxidation of Glycerol
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
01/11/2013
01/11/2013
2012
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Resumo |
This work consisted in the preparation of platinum-based catalysts supported on carbon (Vulcan XC-72) and investigation of their physicochemical and electrochemical properties. Catalysts of the C/Pt-Ni-Sn-Me (Me = Ru or Ir) type were prepared by the Pechini method at temperature of 350 degrees C. Four different compositions were homemade: C/Pt60Sn10Ni30, C/Pt60Sn10Ni20Ru10, C/Pt60Sn10Ni10Ru20, and C/Pt60Sn10Ni10Ir20. These catalysts were electrochemically and physically characterized by cyclic voltammetry (CV), chronoamperometry (CA) in the presence of glycerol 1.0 mol dm(-3), X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HRTEM). XRD results showed the main peaks of face-centered cubic Pt. The particle sizes obtained from XRD and HRTEM experiments were close to values ranging from 3 to 8.5 nm. The CV results indicate behavior typical of Pt-based catalysts in acid medium. The CV and CA data reveal that quaternary catalysts present the highest current density for the electrooxidation of glycerol. FAPES FAPES CAPES CAPES CNPq CNPq [147822/2010-6] LMC-UFES LMCUFES PETROBRAS Petrobras |
Identificador |
SCIENTIFIC WORLD JOURNAL, NEW YORK, v. 31, n. 1, supl. 1, Part 6, pp. 104-109, 37987, 2012 1537-744X http://www.producao.usp.br/handle/BDPI/37692 10.1100/2012/502083 |
Idioma(s) |
eng |
Publicador |
HINDAWI PUBLISHING CORPORATION NEW YORK |
Relação |
SCIENTIFIC WORLD JOURNAL |
Direitos |
openAccess Copyright HINDAWI PUBLISHING CORPORATION |
Palavras-Chave | #FUEL-CELLS #ETHANOL OXIDATION #ELECTROCATALYSIS #ALCOHOL #MULTIDISCIPLINARY SCIENCES |
Tipo |
article original article publishedVersion |