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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.)

Partial oxidation of methane on neodymium and lanthanium chromate based perovskites for hydrogen production

Texto completo
Autor(es):
Roseno, K. T. de C. [1] ; Schmal, M. [1, 2] ; Brackmann, R. [3] ; Alves, R. M. B. [1] ; Giudici, R. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Chem Engn, Polytech Sch, Ave Prof Lineu Prestes 580, Bl 18, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Fed Rio de Janeiro, UFRJ, Dept Chem Engn, Ave Horacio Macedo 2030, CP 68502, BR-21941914 Rio De Janeiro, RJ - Brazil
[3] Fed Univ Technol Parana UTFPR, Dept Chem, Via Conhecimento, Km 01, CP 571, BR-85503390 Pato Branco, PR - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 44, n. 16, p. 8166-8177, MAR 29 2019.
Citações Web of Science: 3
Resumo

Perovskite-type mixed oxides LaCrO3 and Nd0.95CrO3 were synthesized by the polymerization complex method. The perovskites were characterized by different techniques aiming to evaluate the influence of the non-stoichiometry and the nature of site A on the catalytic properties for the POM reaction. The non-stoichiometry and A sites did not affect the methane conversion, but the selectivity. The methane conversion with the neodymium catalyst Nd0.95CrO3 (N95) was 34%, and of the mixed La0.95CrO3 (L95) catalyst 38%, under these conditions. The rate of the Nd0.95CrO3 (N95) perovskite was equal to 3.50 mol.g(-1).h(-1) at 700 degrees C, which suggests higher activity compared to cobaltate perovskites. Although the hydrogen selectivity was similar the selectivity to CO and CO2 were different. Catalysts did not suffer structure changes during the POM reaction and negligible deactivation. (C) 2019 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