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

Investigation of LaCoO3, LaFeO3 and LaCo0.5Fe0.5O3 perovskites as catalyst precursors for syngas production by partial oxidation of methane

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Autor(es):
Roseno, K. T. C. ; Brackmann, R. ; da Silva, M. A. ; Schmal, M.
Número total de Autores: 4
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 41, n. 40, p. 18178-18192, OCT 26 2016.
Citações Web of Science: 19
Resumo

The effect of substitution of cobalt by iron in LaCo1-xFexO3 (x = 0.0, 0.5 and 1.0) perovskite-type oxides on its physical properties and catalytic performance in the partial oxidation of methane (POM) reforming was investigated. The perovskites were characterized by X-Ray Diffraction (XRD) and the diffractograms were refined by the Rietveld method, X-Ray Fluorescence (XRF), Thermal analysis, BET (Brunauer-Emmett-Teller) specific area, Temperature Programmed Reduction (TPR) and Scanning Electron Microscopy (SEM). Remarkable is the product distribution varying with space time and with perovskite-type catalyst employed. For lower W/F values, the major product was H-2 for the LaCoO3 (55.8%) and LaCo0.5Fe0.5O3 (59.2%), with similar ratios H-2/CO (1.8-1.9) and low CO2 formation. On the other hand, the commercial catalyst (REF-11) was relatively more active (conversion of 75.2%), and the H-2 production was 60.7%. Differently was the LaFeO3 perovskite that showed lower H-2 and CO formation or ratio of H-2/CO, but a significant increasing of CO2 formation. According to the catalytic and characterization results before and after reaction, we proposed reaction routes that showed different paths on the LaCoO3, LaFeO3 and mixed perovskite-type oxides. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 14/50279-4 - Brasil Research Centre for Gas Innovation
Beneficiário:Julio Romano Meneghini
Linha de fomento: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
Processo FAPESP: 14/00833-5 - Pesquisador Visitante Prof. Martin Schmal
Beneficiário:Reinaldo Giudici
Linha de fomento: Auxílio à Pesquisa - Pesquisador Visitante - Brasil