Effects of adding La and Ce to hydrotalcite-type Ni/Mg/Al catalyst precursors on ethanol steam reforming reactions
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2010
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Resumo |
Catalyst precursors composed of Ni/Mg/Al oxides with added La and Ce were tested in ethanol steam reforming (ESR) reactions. La and Ce were added by anion-exchange. The oxides were characterized by X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES) analysis. The catalyst precursors consist of a mixture of oxides, with the nickel in the form of NiO strongly interacting with the support Mg/Al. The XPS analysis showed a lanthanum-support interaction, but no interaction of Ce species with the support. The reaction data obtained with the active catalysts showed that the addition of Ce and La resulted in better H(2) production at 550 degrees C. The CeNi catalyst provided the higher ethanol conversion, with lower acetaldehyde production, possibly clue to a favoring of water adsorption on the weakly interacting clusters of CeO(2) on the surface. (C) 2010 Elsevier B.V. All rights reserved. FAPESP Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) CAPES |
Identificador |
APPLIED CATALYSIS A-GENERAL, v.388, n.1/Fev, p.77-85, 2010 0926-860X http://producao.usp.br/handle/BDPI/31656 10.1016/j.apcata.2010.08.026 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV |
Relação |
Applied Catalysis A-general |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #Catalyst #Hydrotalcite #Nickel #Ethanol #Reforming #HYDROGEN-PRODUCTION #PARTIAL OXIDATION #DOUBLE HYDROXIDES #NI CATALYSTS #METHANE #TEMPERATURE #DEPOSITION #CARBON #COKE #AL #Chemistry, Physical #Environmental Sciences |
Tipo |
article original article publishedVersion |