Nickel catalysts supported on gadolinium-doped ceria for IT-SOFC applied in methane steam reforming

Authors
Andrade, Maria Luiza; Almeida, Lindaura; Rangel, Maria do Carmo; Pompeo, Francisco; Nichio, Nora Nancy
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
The anode materials used in IT-SOFC consist of a mixture of nickel and cerium oxide doped with rare earth, forming a composite with a conductor metal and a ceramic with ionic conductivity. Nickel catalysts (30 wt %) supported on gadolinium-doped ceria (10 and 20% mol/mol) were prepared in this work, in order to obtain materials with catalytic properties suitable for using them as anodes in IT-SOFC. The catalysts were evaluated in steam reforming of methane in the range from 600 to 750ºC, using H2O/C ratio of 1:1 and 3:1. It was noted that gadolinium caused an increase of metal-support interaction and resistance to sintering of metal particles. The most promising catalyst was that of 30% Ni and 10% Gd (30CG10). Although the carbon content is not reduced, the carbon deposited in 30CG10 catalyst is more reactive due to its amorphous nature and therefore, it is possible to regenerate at temperature lower than 400°C.
Fil: Andrade, Maria Luiza. Universidade do Estado da Bahia. Programa de pos graduacao em quimica aplicada; Brasil. Universidade Federal da Bahia. Instituto de Química. GECCAT - Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Almeida, Lindaura. Universidade Federal da Bahia. Instituto de Química. GECCAT - Grupo de Estudos em Cinética e Catálise; Brasil
Fil: Rangel, Maria do Carmo. Universidade Federal da Bahia. Instituto de Química. GECCAT - Grupo de Estudos em Cinética e Catálise; Brasil. Universidade do Estado da Bahia. Programa de pos graduacao em quimica aplicada; Brasil
Fil: Pompeo, Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Fil: Nichio, Nora Nancy. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina
Subject
anode catalysts
gadolinium-doped ceria
steam reforming
Otras Ingeniería Química
Ingeniería Química
INGENIERÍAS Y TECNOLOGÍAS
Access level
Restricted access
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/30151