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(Referência obtida automaticamente do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Glycerol Electrooxidation in Alkaline Medium Using Pd/C, Au/C and PdAu/C Electrocatalysts Prepared by Electron Beam Irradiation

Texto completo
Autor(es):
Geraldes, Adriana N. [1] ; Silva, Dionisio F. [2] ; Silva, Julio C. M. ; Souza, Rodrigo F. B. [2] ; Spinace, Estevam V. [2] ; Neto, Almir O. [2] ; Linardi, Marcelo [2] ; Santos, Mauro C. [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Fed Abc, CCNH, LEMN, BR-09210170 Santo Andre, SP - Brazil
[2] IPEN, CCCH, BR-05508900 Sao Paulo - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of the Brazilian Chemical Society; v. 25, n. 5, p. 831-840, Maio 2014.
Citações Web of Science: 17
Resumo

Pd/C, Au/C and PdAu/C electrocatalysts with different atomic ratios prepared using electron beam irradiation were tested for glycerol electrooxidation in single alkaline direct glycerol fuel cell (ADGFC). X-ray diffractograms (XRD) of PdAu/C electrocatalysts showed the presence of Pd (fcc) and Au (fcc) phases. Cyclic voltammetry (CV) and chronoamperometry showed that PdAu/C electrocatalyst with Pd:Au atomic ratio of 50:50 demonstrated superior activity for glycerol electrooxidation, at room temperature. In situ Fourier transform infrared spectroscopy by attenuated total reflectance (ATR-FTIR) experiments were performed for the electrocatalysts, identifying oxalate, glycerate ion, 1,3-dihydroxy-2-propanone, glyceraldehyde and glycolate as products of glycerol electrooxidation. Experiments with single ADGFC were carried out from 50 to 90 ºC, using Pd/C electrocatalyst; the best performance was obtained at 80 ºC. (AU)

Processo FAPESP: 12/03516-5 - Eletrocatalisadores suportados em óxidos-c para uso em ânodos de célula à combustível de líquido direto
Beneficiário:Rodrigo Fernando Brambilla de Souza
Linha de fomento: Bolsas no Brasil - Pós-Doutorado