Carbon nanotube-supported Ni–CeO2 catalysts. Effect of the support on the catalytic performance in the low-temperature WGS reaction
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Título: | Carbon nanotube-supported Ni–CeO2 catalysts. Effect of the support on the catalytic performance in the low-temperature WGS reaction |
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Autor/es: | Dongil, Ana Belén | Pastor Pérez, Laura | Escalona, Néstor | Sepúlveda-Escribano, Antonio |
Grupo/s de investigación o GITE: | Materiales Avanzados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Carbon nanotubes-supported | Nickel catalysts | Ceria | Catalytic performance | Low-temperature WGS reaction |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | may-2016 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2016, 101: 296-304. doi:10.1016/j.carbon.2016.01.103 |
Resumen: | The low temperature water-gas shift (WGS) reaction has been studied over two commercial multiwall carbon nanotubes-supported nickel catalysts promoted by ceria. For comparison purposes, activated carbon-supported catalysts have also been studied. The catalytic performance and the characterization by N2 adsorption analysis, powder X-ray diffraction (XRD), temperature-programmed reduction with H2 (TPR-H2), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis showed that the surface chemistry has an important effect on the dispersion of ceria. As a result, ceria was successfully dispersed over the carbon nanotubes (CNTs) with less graphitic character, and the catalyst afforded better activity in WGS than the catalyst prepared over massive ceria. Moreover, a 20 wt.% CeO2 loading over this support was more active than the analogous catalyst with a 40 wt.% loading. The ceria nanoparticles were smaller when the support was previously oxidized, however this resulted in a decrease of the activity. |
Patrocinador/es: | Financial support from CONICYT (Chile, Postdoc FONDECYT 3130483), Ministerio de Economía y Competitividad (Spain, MAT2010-21147 and MAT2013-45008-P) and Generalitat Valenciana (Spain, PROMETEOII/2014/004) is gratefully acknowledged. |
URI: | http://hdl.handle.net/10045/53072 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2016.01.103 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.carbon.2016.01.103 |
Aparece en las colecciones: | INV - LMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2016_Dongil_etal_Carbon_final.pdf | Versión final (acceso restringido) | 1,09 MB | Adobe PDF | Abrir Solicitar una copia |
2016_Dongil_etal_Carbon_accepted.pdf | Accepted Manuscript (acceso abierto) | 6,36 MB | Adobe PDF | Abrir Vista previa |
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