Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process

Adsorptive removal of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on polymer-derived carbons with incorporated heteroatoms of oxygen, sulfur and phosphorus. The materials before and after exposure...

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Autores: Seredych, Mykola, Wu, Zoe, Brender, Patrice, Ovín Ania, María Concepción, Vix-Guterl, Cathie, Bandosz, Teresa J.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/99404
Acceso en línea:http://hdl.handle.net/10261/99404
Access Level:acceso abierto
Palabra clave:Dibenzothiophenes
Model diesel fuel
Activated carbon
P-functionalities
Reactive adsorption
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spelling Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption processSeredych, MykolaWu, ZoeBrender, PatriceOvín Ania, María ConcepciónVix-Guterl, CathieBandosz, Teresa J.DibenzothiophenesModel diesel fuelActivated carbonP-functionalitiesReactive adsorptionAdsorptive removal of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on polymer-derived carbons with incorporated heteroatoms of oxygen, sulfur and phosphorus. The materials before and after exposure to model diesel fuel were characterized using adsorption of nitrogen, thermal analysis, potentiometric titration, XPS and elemental analysis. The selectivities for DBT and DMDBT adsorption were calculated with reference to naphthalene. The results indicated that the presence of phosphorus, especially in the form of pyrophosphates and P2O5, increases the capacity and selectivity for removal of dibenzothiophenes. It also affects the adsorption mechanism. Phosphorus suppresses oxidation reactions of DBT and DMDBT. Owing to a possible location of bulky phosphorus groups in pore with sizes between 1 and 3 nm thiophenic molecules are strongly adsorbed there via dispersive forces. Acidic environment also enhances adsorption via acid–base interactions. Physical adsorption mechanism and stability of surface make these carbons attractive candidates for thermal regeneration.This work was partially supported by PSC CUNY grant # 62615-0040 and the NSF grant # CBET-0930858. The authors are grateful to Mr. Albert V. Tamashausky of Asbury Carbon for his help with sulfur and phosphorus analysis and to Dr. Jacek Jagiello for the SAIEUS software. The help of Ph. Fioux with the XPS analysis is also acknowledged.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/99404reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fuel.2011.08.007Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/994042026-05-22T06:33:51Z
dc.title.none.fl_str_mv Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
title Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
spellingShingle Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
Seredych, Mykola
Dibenzothiophenes
Model diesel fuel
Activated carbon
P-functionalities
Reactive adsorption
title_short Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
title_full Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
title_fullStr Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
title_full_unstemmed Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
title_sort Role of phosphorus in carbon matrix in desulfurization of diesel fuel using adsorption process
dc.creator.none.fl_str_mv Seredych, Mykola
Wu, Zoe
Brender, Patrice
Ovín Ania, María Concepción
Vix-Guterl, Cathie
Bandosz, Teresa J.
author Seredych, Mykola
author_facet Seredych, Mykola
Wu, Zoe
Brender, Patrice
Ovín Ania, María Concepción
Vix-Guterl, Cathie
Bandosz, Teresa J.
author_role author
author2 Wu, Zoe
Brender, Patrice
Ovín Ania, María Concepción
Vix-Guterl, Cathie
Bandosz, Teresa J.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dibenzothiophenes
Model diesel fuel
Activated carbon
P-functionalities
Reactive adsorption
topic Dibenzothiophenes
Model diesel fuel
Activated carbon
P-functionalities
Reactive adsorption
description Adsorptive removal of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) from model diesel fuel with 20 ppmw total concentration of sulfur was investigated on polymer-derived carbons with incorporated heteroatoms of oxygen, sulfur and phosphorus. The materials before and after exposure to model diesel fuel were characterized using adsorption of nitrogen, thermal analysis, potentiometric titration, XPS and elemental analysis. The selectivities for DBT and DMDBT adsorption were calculated with reference to naphthalene. The results indicated that the presence of phosphorus, especially in the form of pyrophosphates and P2O5, increases the capacity and selectivity for removal of dibenzothiophenes. It also affects the adsorption mechanism. Phosphorus suppresses oxidation reactions of DBT and DMDBT. Owing to a possible location of bulky phosphorus groups in pore with sizes between 1 and 3 nm thiophenic molecules are strongly adsorbed there via dispersive forces. Acidic environment also enhances adsorption via acid–base interactions. Physical adsorption mechanism and stability of surface make these carbons attractive candidates for thermal regeneration.
publishDate 2012
dc.date.none.fl_str_mv 2012
2014
2014
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/10261/99404
url http://hdl.handle.net/10261/99404
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.fuel.2011.08.007
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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