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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Formic Acid Oxidation at Pd, Pt and PbOx-based Catalysts and Calculation of their Approximate Electrochemical Active Areas

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Author(s):
Niquirilo, Rafael V. [1] ; Teixeira-Neto, Erico [1] ; Buzzo, Guilherme S. [1] ; Suffredini, Hugo B. [1]
Total Authors: 4
Affiliation:
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Santo Andre, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: International Journal of Electrochemical Science; v. 5, n. 3, p. 344-354, MAR 2010.
Web of Science Citations: 20
Abstract

In this work, we describe the use of several Pd-based catalysts for promotion of the oxidation of formic acid in the presence of sulphuric acid. We also undertake and discuss a calculation of the ``electrochemical area{''} of the carbon-supported catalysts, by using a polycrystalline Pt electrode and a Fe(CN)(6)(3-)/Fe(CN)(6)(4-) solution. All catalysts were synthesized by a modified sol-gel method. XRD spectra revealed that the Pd/C catalyst particles were a mixture of Pd and PdO crystallites. Particles of the Pd-Pt/C catalyst were composed mainly of a mixture of Pd, Pt or PdPt crystallites. The Pd-Pt-PbO(x)/C particles were a mixture of crystallites of Pd, Pt (or PdPt), PdO and lead oxides. Examination of their electrochemical responses showed that the Pd-Pt-PbO(x)/C catalysts are well suited to promote formic acid oxidation, as they avoid strong ion adsorption processes on the electrode surfaces, a problem commonly observed when using Pd/C catalysts. (AU)

FAPESP's process: 07/05155-1 - Preparation and use of heterogeneous catalysts by the sol-gel method for electrocatalysis and biodiesel synthesis
Grantee:Hugo Barbosa Suffredini
Support Opportunities: Research Grants - Young Investigators Grants