Catalysts based on large size-controlled Pd nanoparticles for aqueous-phase hydrodechlorination

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dc.contributor.author Baeza, J. A.
dc.contributor.author Calvo, L.
dc.contributor.author Rodriguez, J. J.
dc.contributor.author Gilarranz, Miguel A.
dc.contributor.other UAM. Departamento de Química Física Aplicada es_ES
dc.date.accessioned 2016-06-06T11:38:51Z
dc.date.available 2016-06-06T11:38:51Z
dc.date.issued 2016-06-15
dc.identifier.citation Chemical Engineering Journal 294 (2016): 40-48 en_US
dc.identifier.issn 1385-8947 (print) en
dc.identifier.uri http://hdl.handle.net/10486/671269
dc.description.abstract This work is aimed at evaluating the catalytic performance of Pd/C catalysts based on size-controlled nanoparticles (mean size 10-50 nm). Carbon black was used as support and the catalysts were tested in the aqueous phase hydrodechlorination of 4-chlorophenol. The Pd precursor was reduced with a methanol/water (10% vol.) mixture in the presence of PVP (PVP/Pd molar ratio 5-35) as capping agent. The performances of unsupported Pd-PVP colloidal nanoparticle and the catalysts prepared by impregnation of them on the carbon black (ex-situ synthesis), reduction of the precursor in the presence of that support (in-situ synthesis) and wetness impregnation were compared. The ex-situ preparation with less content of PVP (PVP/Pd molar ratio of 5) boosted the activity of the Pd-PVP nanoparticles from 16.8 to 167 mmol gPd - 1 min-1 showing the role of the support in enhancing the catalytic performance. The in-situ synthesis with less content of PVP (PVP/Pd molar ratio of 5) resulted in catalysts with lower activity than that prepared by ex-situ synthesis, although they exhibited higher ability to hydrogenate phenol to cyclohexanone and cyclohexanol, which can be related to the morphology of the nanoparticles synthesized. Regardless of the type of synthesis, as PVP dose in synthesis increased, activity and selectivity to hydrogenation products decreased. High activity values were obtained (20-167 mmol gPd - 1 min-1) taking into account the high mean size of the Pd nanoparticles in the catalysts en_US
dc.description.sponsorship The SusFuelCat project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under Grant agreement No. 310490 (www.susfuelcat.eu). The authors greatly appreciate financial support from the Spanish MINECO (CTQ2012-32821) en_US
dc.format.extent 9 pag. en
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier B.V. en_US
dc.relation.ispartof Chemical Engineering Journal en_US
dc.rights © 2016 Elsevier B.V. en_US
dc.subject.other Carbon black en_US
dc.subject.other Controlled-size nanoparticles en_US
dc.subject.other Hydrodechlorination en_US
dc.subject.other Pd-based catalysts en_US
dc.title Catalysts based on large size-controlled Pd nanoparticles for aqueous-phase hydrodechlorination en_US
dc.type article en
dc.subject.eciencia Química es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.cej.2016.02.107 es_ES
dc.identifier.doi 10.1016/j.cej.2016.02.107 es_ES
dc.identifier.publicationfirstpage 40 es_ES
dc.identifier.publicationlastpage 48 es_ES
dc.identifier.publicationvolume 294 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/310490 es_ES
dc.relation.projectID Gobierno de España. CTQ2012-32821 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en
dc.rights.accessRights openAccess en
dc.authorUAM Gilarranz Redondo, Miguel Ángel (258382)


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