Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts

Platinum catalysts supported on activated carbon (Pt/C) at different metal loadings (0.5-2% Pt) have been tested in the gas-phase hydrodechlorination (HDC) of mixtures of dichloromethane (DCM) and chloroform (TCM), with a total feed concentration of 1000ppmv. Almost complete dechlorination was achie...

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Autores: Arévalo-Bastante, Alejandra, Álvarez Montero, Ariadna, Bedia García-Matamoros, Jorge, Gómez Sainero, Luisa María, Rodríguez Jiménez, Juan José
Tipo de documento: artigo
Data de publicação:2015
País:España
Recursos:Universidad Autónoma de Madrid
Repositório:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglês
OAI Identifier:oai:repositorio.uam.es:10486/675400
Acesso em linha:http://hdl.handle.net/10486/675400
https://dx.doi.org/10.1016/j.apcatb.2015.05.058
Access Level:Acceso aberto
Palavra-chave:Chloroform
Dichloromethane
Hydrodechlorination
Mixtures
Pt/C
Química
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spelling Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalystsArévalo-Bastante, AlejandraÁlvarez Montero, AriadnaBedia García-Matamoros, JorgeGómez Sainero, Luisa MaríaRodríguez Jiménez, Juan JoséChloroformDichloromethaneHydrodechlorinationMixturesPt/CQuímicaPlatinum catalysts supported on activated carbon (Pt/C) at different metal loadings (0.5-2% Pt) have been tested in the gas-phase hydrodechlorination (HDC) of mixtures of dichloromethane (DCM) and chloroform (TCM), with a total feed concentration of 1000ppmv. Almost complete dechlorination was achieved at 250°C, 1kghmol-1 space time and a H2/CM molar ratio of 25 with the 2% Pt catalyst. At a reaction temperature of 250°C, scarce inhibition in the conversion of both compounds was observed compared to the HDC of the individual chloromethanes. The TOF values for DCM increase with the Pt content, which can be attributed to the higher proportion of the zero-valent species. The selectivity to reaction products suggests a parallel reactions scheme. The catalysts showed a high stability, demonstrated by the unchanged conversion of both chloromethanes upon time on stream in long-term experiments carried out at up to 26h.The authors gratefully acknowledge financial support from the Spanish Ministerio de Economía y Competitividad (MINECO) through the project CTM2011-28352Elsevier B.V.Departamento de Química Física AplicadaFacultad de Ciencias20152015-12-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/675400https://dx.doi.org/10.1016/j.apcatb.2015.05.058reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6754002026-06-23T12:46:27Z
dc.title.none.fl_str_mv Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
title Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
spellingShingle Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
Arévalo-Bastante, Alejandra
Chloroform
Dichloromethane
Hydrodechlorination
Mixtures
Pt/C
Química
title_short Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
title_full Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
title_fullStr Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
title_full_unstemmed Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
title_sort Gas-phase hydrodechlorination of mixtures of chloromethanes with activated carbon-supported platinum catalysts
dc.creator.none.fl_str_mv Arévalo-Bastante, Alejandra
Álvarez Montero, Ariadna
Bedia García-Matamoros, Jorge
Gómez Sainero, Luisa María
Rodríguez Jiménez, Juan José
author Arévalo-Bastante, Alejandra
author_facet Arévalo-Bastante, Alejandra
Álvarez Montero, Ariadna
Bedia García-Matamoros, Jorge
Gómez Sainero, Luisa María
Rodríguez Jiménez, Juan José
author_role author
author2 Álvarez Montero, Ariadna
Bedia García-Matamoros, Jorge
Gómez Sainero, Luisa María
Rodríguez Jiménez, Juan José
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Química Física Aplicada
Facultad de Ciencias
dc.subject.none.fl_str_mv Chloroform
Dichloromethane
Hydrodechlorination
Mixtures
Pt/C
Química
topic Chloroform
Dichloromethane
Hydrodechlorination
Mixtures
Pt/C
Química
description Platinum catalysts supported on activated carbon (Pt/C) at different metal loadings (0.5-2% Pt) have been tested in the gas-phase hydrodechlorination (HDC) of mixtures of dichloromethane (DCM) and chloroform (TCM), with a total feed concentration of 1000ppmv. Almost complete dechlorination was achieved at 250°C, 1kghmol-1 space time and a H2/CM molar ratio of 25 with the 2% Pt catalyst. At a reaction temperature of 250°C, scarce inhibition in the conversion of both compounds was observed compared to the HDC of the individual chloromethanes. The TOF values for DCM increase with the Pt content, which can be attributed to the higher proportion of the zero-valent species. The selectivity to reaction products suggests a parallel reactions scheme. The catalysts showed a high stability, demonstrated by the unchanged conversion of both chloromethanes upon time on stream in long-term experiments carried out at up to 26h.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-12-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/675400
https://dx.doi.org/10.1016/j.apcatb.2015.05.058
url http://hdl.handle.net/10486/675400
https://dx.doi.org/10.1016/j.apcatb.2015.05.058
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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