Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers

The utilization of biogas as carbon source for the co-production of filamentous-like materials and syngas is proposed. Catalysts with different Ni:Al molar ratios, Al2O3 supports and preparation methods were synthesized. The suitability of the catalysts was analyzed considering activity, stability a...

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Detalles Bibliográficos
Autores: Llobet, Saúl de, Pinilla Ibarz, José Luis, Moliner Álvarez, Rafael, Suelves Laiglesia, Isabel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/111048
Acceso en línea:http://hdl.handle.net/10261/111048
Access Level:acceso abierto
Palabra clave:Biogas
Catalytic decomposition
H2-rich gases
Ni-catalysts
Carbon nanofibres
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spelling Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibersLlobet, Saúl dePinilla Ibarz, José LuisMoliner Álvarez, RafaelSuelves Laiglesia, IsabelBiogasCatalytic decompositionH2-rich gasesNi-catalystsCarbon nanofibresThe utilization of biogas as carbon source for the co-production of filamentous-like materials and syngas is proposed. Catalysts with different Ni:Al molar ratios, Al2O3 supports and preparation methods were synthesized. The suitability of the catalysts was analyzed considering activity, stability and carbon yield. Catalysts showed a good performance and similar results according to syngas compositions were obtained. However, some differences related to stability over time and carbon yields were detected. TPR analysis and TEM micrographs of the fresh catalysts revealed the presence of two different Ni particles: large Ni particles with low metal support interaction (MSI) that favoured the formation of encapsulating carbon and small Ni particles inserted in the Al2O3 structure with a greater MSI that lead to nanofilamentous carbons formation. Generally both kinds of Ni particles were observed in all catalysts, however their relative abundance was dramatically affected by the Al2O3 employed, the preparation method and the Ni:Al molar ratio.The authors acknowledge the Spanish Economy and Competitiveness Ministry and the ERDF funds for the financial support of the Project ENE2011-28318-C03-01. S. de Llobet thanks the Diputación General de Aragón for the Ph.D. grant. Authors would like to acknowledge the use of Servicio General de Apoyo a la Investigación-SAI of the University of Zaragoza.Peer ReviewedElsevier BVConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2015201520142015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/111048reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.apcatb.2014.10.014Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1110482026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
title Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
spellingShingle Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
Llobet, Saúl de
Biogas
Catalytic decomposition
H2-rich gases
Ni-catalysts
Carbon nanofibres
title_short Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
title_full Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
title_fullStr Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
title_full_unstemmed Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
title_sort Effect of the synthesis conditions of Ni/Al2O3 catalysts on the biogas decomposition to produce H2-rich gas and carbon nanofibers
dc.creator.none.fl_str_mv Llobet, Saúl de
Pinilla Ibarz, José Luis
Moliner Álvarez, Rafael
Suelves Laiglesia, Isabel
author Llobet, Saúl de
author_facet Llobet, Saúl de
Pinilla Ibarz, José Luis
Moliner Álvarez, Rafael
Suelves Laiglesia, Isabel
author_role author
author2 Pinilla Ibarz, José Luis
Moliner Álvarez, Rafael
Suelves Laiglesia, Isabel
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Biogas
Catalytic decomposition
H2-rich gases
Ni-catalysts
Carbon nanofibres
topic Biogas
Catalytic decomposition
H2-rich gases
Ni-catalysts
Carbon nanofibres
description The utilization of biogas as carbon source for the co-production of filamentous-like materials and syngas is proposed. Catalysts with different Ni:Al molar ratios, Al2O3 supports and preparation methods were synthesized. The suitability of the catalysts was analyzed considering activity, stability and carbon yield. Catalysts showed a good performance and similar results according to syngas compositions were obtained. However, some differences related to stability over time and carbon yields were detected. TPR analysis and TEM micrographs of the fresh catalysts revealed the presence of two different Ni particles: large Ni particles with low metal support interaction (MSI) that favoured the formation of encapsulating carbon and small Ni particles inserted in the Al2O3 structure with a greater MSI that lead to nanofilamentous carbons formation. Generally both kinds of Ni particles were observed in all catalysts, however their relative abundance was dramatically affected by the Al2O3 employed, the preparation method and the Ni:Al molar ratio.
publishDate 2014
dc.date.none.fl_str_mv 2014
2015
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/111048
url http://hdl.handle.net/10261/111048
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.apcatb.2014.10.014
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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