Role of catalyst preparation on determining selective sites for hydrogenation of dimethyl adipate over RuSn/Al2O3

dc.creatorSilva, AM
dc.creatorSantos, OAA
dc.creatorMorales, MA
dc.creatorBaggio-Saitovitch, EM
dc.creatorJordao, E
dc.creatorFraga, MA
dc.date2006
dc.date37073
dc.date2014-11-17T18:27:02Z
dc.date2015-11-26T17:41:24Z
dc.date2014-11-17T18:27:02Z
dc.date2015-11-26T17:41:24Z
dc.date.accessioned2018-03-29T00:23:11Z
dc.date.available2018-03-29T00:23:11Z
dc.identifierJournal Of Molecular Catalysis A-chemical. Elsevier Science Bv, v. 253, n. 41671, n. 62, n. 69, 2006.
dc.identifier1381-1169
dc.identifierWOS:000238502400009
dc.identifier10.1016/j.molcata.2006.03.005
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/71209
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/71209
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/71209
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287001
dc.descriptionThe hydrogenation of dimethyl adipate over RuSn/Al2O3 catalysts was studied. Attention was given to the effects of the preparation method and pretreatment conditions on the selective production of 1,6-hexanediol. The catalysts were prepared by co-impregnation and sol gel methods. The liquid phase catalytic reaction revealed that hexanediol can only be produced over the catalyst obtained by co-impregnation and calcined at low temperature. This system allowed 49% selectivity at practically total ester conversion. No diol could be formed when the same system was formerly calcined at 600 degrees C or over the sol gel catalyst. Mossbauer spectra revealed the occurrence of the same tin species in all catalysts; the distinct performance was thus attributed to the location of such species on the surface as evidenced by XPS. The results presented in this work indicated that alumina-supported Ru-Sn bimetallic catalysts may indeed be appropriate for 1,6-hexanediol production from DMA. However, the generation of tin oxidic species is not solely decisive for the formation of catalytically active sites. A suitable preparation method must be applied in order to better localize the SnOx moieties and tailor the required Ru-SnOx selective sites. (c) 2006 Elsevier B.V. All rights reserved.
dc.description253
dc.description41671
dc.description62
dc.description69
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationJournal Of Molecular Catalysis A-chemical
dc.relationJ. Mol. Catal. A-Chem.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectRuSn catalysts
dc.subjectselective hydrogenation
dc.subject1,6-hexanediol
dc.subjectdimethyl adipate
dc.subjectRuthenium-tin Catalysts
dc.subjectAlpha,beta-unsaturated Aldehydes
dc.subjectBimetallic Catalysts
dc.subjectCarboxylic-acids
dc.subjectMethyl Oleate
dc.subjectOleyl Alcohol
dc.subjectOleic-acid
dc.subjectMetals
dc.subjectEsters
dc.subjectSn
dc.titleRole of catalyst preparation on determining selective sites for hydrogenation of dimethyl adipate over RuSn/Al2O3
dc.typeArtículos de revistas


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