Deactivation behavior of Pd/C and Pt/C catalysts in the gas-phase hydrodechlorination of chloromethanes: Structure-reactivity relationship

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Show simple item record Martin-Martinez, M. Álvarez-Montero, A. Gómez-Sainero, M. Luisa Baker, R. T. Palomar, J. Omar, Salama Eser, S. Rodríguez, J.J.
dc.contributor.other UAM. Departamento de Química Física Aplicada es_ES 2016-11-23T13:12:29Z 2016-11-23T13:12:29Z 2015-01-01
dc.identifier.citation Applied Catalysis B: Environmental 162 (2015): 532-543 en_US
dc.identifier.issn 0926-3373 es_ES
dc.description.abstract This study analyzes the influence of chemical and physical properties of Pd/C and Pt/C hydrodechlorination (HDC) catalysts in the different evolution of their activity during time on stream. Pt/C showed stable activity in the HDC of dichloromethane (DCM) and chloroform (TCM), while Pd/C was deactivated after 90h of operation, particularly during HDC of DCM. The deactivation of Pd/C catalyst can be attributed to the lower proportion of zero-valent species and larger metal particle size. This appears to hinder the H2 dissociation, enhance the irreversible chemisorption of reactants and reaction products, and favor coupling reactions (leading to the formation of carbonaceous deposits) and/or metal phase change reactions. The more extensive deactivation of Pd/C in the HDC of DCM is attributed to the stronger chemisorption of the reactant on the catalyst, which leads to the formation of a new PdCx phase by the incorporation of carbon atoms into the metal lattice en_US
dc.description.sponsorship The authors gratefully acknowledge financial support from the Spanish Ministerio de Economía y Competitividad (MINECO) through the project CTM2011-28352 en_US
dc.format.extent 45 pag. en
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier B.V. en_US
dc.relation.ispartof Applied Catalysis B: Environmental en_US
dc.rights © 2014 Elsevier B.V. en_US
dc.subject.other Chloromethanes en_US
dc.subject.other Deactivation en_US
dc.subject.other Hydrodechlorination en_US
dc.subject.other Pd/C en_US
dc.subject.other Pt/C en_US
dc.title Deactivation behavior of Pd/C and Pt/C catalysts in the gas-phase hydrodechlorination of chloromethanes: Structure-reactivity relationship en_US
dc.type article en
dc.subject.eciencia Química es_ES 2017-01-02
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1016/j.apcatb.2014.07.017 es_ES
dc.identifier.publicationfirstpage 532 es_ES
dc.identifier.publicationlastpage 543 es_ES
dc.identifier.publicationvolume 162 es_ES
dc.relation.projectID Gobierno de España. CTM2011-28352 es_ES
dc.type.version info:eu-repo/semantics/acceptedVersion en
dc.rights.accessRights openAccess en

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