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Carbon supported platinum catalysts for catalytic wet air oxidation of refractory carboxylic acids

2005Journal article Restricted access
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dc.contributor.authorGomes, Helder
dc.contributor.authorSerp, Philippe
dc.contributor.authorKalck, Philippe
dc.contributor.authorFigueiredo, José
dc.contributor.authorFaria, Joaquim
dc.date.accessioned2009-04-01T11:24:24Z
dc.date.available2009-04-01T11:24:24Z
dc.date.issued2005
dc.description.abstractCarbon supported platinum (1% wt) catalysts were prepared by the incipient wetness impregnation method and by organometallic chemical vapor deposition. Catalyst characterization was carried out by means of adsorption and thermogravimetric techniques, and by electron microscopy. The catalyst with higher metal dispersion was produced by incipient wetness impregnation. The catalysts were tested in the catalytic wet air oxidation (200 C and 6.9 bar of oxygen partial pressure) of aqueous solutions containing low molecular weight (C2 to C4) carboxylic acids. Significant conversions (greater than 60% over 2 h) and 100% selectivity towards water and non-carboxylic acid products were observed for both systems. The initial reaction rate was used to compare the performance of the two catalytic materials and direct correspondence to the metal dispersion was found. No metal leaching was observed during reaction and no significant deactivation occurred in three successive catalytic oxidation runs. A kinetic model based on the Langmuir–Hinshelwood formulation was applied and the results were analyzed in terms of a heterogeneously catalyzed free radical mechanism.en
dc.identifier.citationGomes, Helder; Serp, Philippe; Kalck, Philippe; Figueiredo, José; Faria, Joaquim (2005). Carbon supported platinum catalysts for catalytic wet air oxidation of refractory carboxylic acids. Topics in Catalysis. ISSN 1022-5528. 33:1-4, p. 59-68en
dc.identifier.doi10.1007/s11244-005-2505-5
dc.identifier.issn1022-5528en
dc.identifier.slugTopics in Catalysisen
dc.identifier.urihttp://hdl.handle.net/10198/1144
dc.language.isoengen
dc.language.rfc3066engen
dc.number1-4en
dc.pagination59-68en
dc.peerreviewedyesen
dc.publisherSpringeren
dc.subjectCatalytic wet air oxidation (CWAO)en
dc.subjectCarbon supported platinum catalystsen
dc.subjectIncipient wetness impregnationen
dc.subjectOrganometallic chemical vapor deposition (OMCVD)en
dc.titleCarbon supported platinum catalysts for catalytic wet air oxidation of refractory carboxylic acidsen
dc.typejournal article
dc.volume33en
dspace.entity.typePublication
person.familyNameGomes
person.givenNameHelder
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-6898-2408
rcaap.rightsopenAccessen
rcaap.typearticleen
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery0eb96337-224a-4339-9918-334436fbbb99

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