Activation of Methane on PdZn/C Electrocatalysts i... - BV FAPESP
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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.)

Activation of Methane on PdZn/C Electrocatalysts in an Acidic Electrolyte at Low Temperatures

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Author(s):
Nandenha, J. [1] ; Nagahama, I. H. F. [1, 2] ; Yamashita, J. Y. [1, 2] ; Fontes, E. H. [1] ; Ayoub, J. M. S. [1] ; de Souza, R. F. B. [1] ; Fonseca, F. C. [1] ; Neto, A. O. [1]
Total Authors: 8
Affiliation:
[1] CNEN SP, IPEN, Av Prof Lineu Prestes 2242, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil
[2] FOC, Rua Brigadeiro Galva 540, BR-01151000 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: International Journal of Electrochemical Science; v. 14, n. 12, p. 10819-10834, DEC 2019.
Web of Science Citations: 0
Abstract

PdZn/C electrocatalysts were prepared by sodium borohydride utilized as reducing agent for activation methane in an acidic medium at room temperature and in a proton exchange membrane fuel cell (PEMFC) at 80 degrees C. The materials prepared were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The diffractograms of the PdZn/C electrocatalysts showed only peaks associated with Pd face-centered cubic (fcc) structure. Cyclic voltammograms (CV) of all electrocatalysts after adsorption of methane shown an increment in current during the anodic scan, this effect was more pronounced for Pd(70)Zn(30)/C. In situ ATR-FTIR (Attenuated Total Reflectance-Fourier Transform Infrared) experiments was not observed the formation of intermediates adsorbed for PdZn/C electrocatalysts, this behavior indicated that the methane oxidation occurs by parallel mechanisms. Polarization curves at 80 degrees C in PEMFC show that Pd(90)Zn(10)/C has superior performance over the other electrocatalysts in methane oxidation. (AU)

FAPESP's process: 14/50279-4 - Brasil Research Centre for Gas Innovation
Grantee:Julio Romano Meneghini
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 17/11937-4 - A sustainable path to methane conversion by advanced electrochemical technologies
Grantee:Fabio Coral Fonseca
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 14/09087-4 - Studies on the use of bioethanol in proton exchange membrane and solid oxide fuel cells
Grantee:Marcelo Linardi
Support Opportunities: Research Projects - Thematic Grants