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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.)

Methane activation on PdMn/C-ITO electrocatalysts using a reactor-type PEMFC

Full text
Author(s):
Nandenha, J. [1] ; Yamashita, J. Y. [1] ; Souza, F. M. [2] ; Fontes, E. H. [1] ; Batista, B. L. [2] ; Santos, M. C. [2] ; Linardi, M. [1] ; Neto, A. O. [1]
Total Authors: 8
Affiliation:
[1] IPEN CNEN SP, Energy & Nucl Res Inst, Ave Prof Lineu Prestes 2242, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil
[2] Fed Univ ABC, Nat & Human Sci Ctr, Rua Santa Adelia 166, BR-09210170 Santo Andre, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: RESEARCH ON CHEMICAL INTERMEDIATES; v. 46, n. 10 JUL 2020.
Web of Science Citations: 0
Abstract

Various palladium and manganese supported in a mix of carbon and indium thin oxide (PdMn/C-ITO) compositions were synthesized by a sodium borohydride reduction process for methane activation at low temperatures in a proton exchange membrane fuel cell (PEMFC) reactor. These electrocatalysts were characterized by X-ray diffraction, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy XPS, inductively coupled plasma mass spectrometry ICP-MS, attenuated total reflection-Fourier transform infrared spectroscopy, cyclic voltammetry and a PEMFC reactor. The diffractograms of PdMn/C-ITO electrocatalysts revealed the face-centered cubic structure of palladium and the bixbyite cubic structure of In2O3. TEM experiments showed mean nanoparticle sizes between 4.7 and 5.2 nm for all electrocatalysts. XPS results showed the presence of palladium and manganese oxides, as well as Pd(0)species. Cyclic voltammograms of PdMn/C-ITO electrocatalysts showed an increase in current density values after the methane adsorption, this result is related to formation of methanol or formic acidic. Polarization curves at 80 degrees C acquired in a PEMFC reactor showed that PdMn(70:30)/C-ITO and PdMn(50:50)/C-ITO have superior performance when compared to Pd/C-ITO indicating the beneficial effect of adding Mn, this behavior can be attributed to the bifunctional mechanism or to the electronic effect of support. (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: 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
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: 17/22976-0 - Development of palladium and niobium nanoelectrocatalysts for alkaline direct ethanol fuel cells
Grantee:Felipe de Moura Souza
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination
Grantee:Marcos Roberto de Vasconcelos Lanza
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/21846-6 - Nanostructures for environmental remediation and power generation from renewable sources
Grantee:Mauro Coelho dos Santos
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants