Ethanol steam reforming over rhodium and cobalt-based catalysts: Effect of the support


Autoria(s): Moura, Jadson S.; Souza, Marluce O. G.; Bellido, Jorge David A.; Assaf, Elisabete M.; Opportus, Marcelo; Reyes, Patricio; Rangel, Maria do Carmo
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

11/10/2013

11/10/2013

01/02/2012

Resumo

The effect of support on the properties of rhodium and cobalt-based catalysts for ethanol steam reforming was studied in this work, by comparing the use of magnesia, alumina and Mg-Al oxide (obtained from hydrotalcite) as supports. It was found that metallic rhodium particles with around 2.4-2.6 nm were formed on all supports, but Mg-Al oxide led to the narrowest particles size distribution; cobalt was supposed to be located on the support, affecting its acidity. Rhodium interacts strongly with the support in the order: alumina> Mg-Al oxide > magnesia. The magnesium-containing catalysts showed low ethene selectivity and high hydrogen selectivity while the alumina-based ones showed high ethene selectivity, assigned to the Lewis sites of alumina. The Mg-Al oxide-supported rhodium and cobalt catalyst was the most promising sample to produce hydrogen by ethanol reforming, showing the highest hydrogen yield, low ethene selectivity and high specific surface area during reaction. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

CNPq

CNPq

FINEP

FINEP

Identificador

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, OXFORD, v. 37, n. 4, pp. 3213-3224, FEB, 2012

0360-3199

http://www.producao.usp.br/handle/BDPI/34153

10.1016/j.ijhydene.2011.10.112

http://dx.doi.org/10.1016/j.ijhydene.2011.10.112

Idioma(s)

eng

Publicador

PERGAMON-ELSEVIER SCIENCE LTD

OXFORD

Relação

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

Direitos

openAccess

Copyright PERGAMON-ELSEVIER SCIENCE LTD

Palavras-Chave #HYDROGEN #ETHANOL #RHODIUM #COBALT #HYDROTALCITE #STEAM REFORMING #WATER-GAS SHIFT #HYDROGEN-PRODUCTION #FUEL-CELLS #NI #NICKEL #RH #PERFORMANCE #STABILITY #MAGNESIUM #PRECURSOR #CHEMISTRY, PHYSICAL #ELECTROCHEMISTRY #ENERGY & FUELS
Tipo

article

original article

publishedVersion