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Catalytic conversion of limonene over acid activated Serra de Dentro (SD) bentonite

2007Journal article Open access
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dc.contributor.authorFernandes, C.
dc.contributor.authorCatrinescu, C.
dc.contributor.authorCastilho, P.
dc.contributor.authorRusso, P. A.
dc.contributor.authorCarrott, M. R.
dc.contributor.authorBreen, C.
dc.date.accessioned2021-04-09T10:25:03Z
dc.date.available2021-04-09T10:25:03Z
dc.date.issued2007
dc.description.abstractA series of acid-activated clay catalysts were prepared from a purified bentonite, rich in structural iron, collected at Serra de Dentro on the island of Porto Santo. The purified bentonite exhibited a surface area of 130 m2 g 1 which increased to values as high as 500 m2 g 1 following activation with 4M HCl at 95 8C for 30 min (SD-4M-95-30). The ability of the activated samples to convert limonene to p-cymene was evaluated using a reaction time of 15 min at 80 8C. The sample prepared using 3M HCl at 95 8C for 30 min (SD-3M-95-30) offered the optimum combination of surface area (470 m2 g 1 ) and acidity (0.26 mmol g 1 ) and 95% of the limonene was converted to product. About 15% of the product mixture was p-cymene whilst non-volatile products and polymeric species made up 54% of the product mixture. The presence of iron in the octahedral sheet of the SD bentonite appears responsible for the dehydrogenation activity. TG–MS analysis of acid activated samples, saturated with cyclohexylamine, reflected the dehydrogenation capabilities of the catalysts in that SD-3M-95-30 produced the most benzene and aniline as decomposition/ transformation products.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFernandes, C., Catrinescu, C., Castilho, P., Russo, P. A., Carrott, M. R., & Breen, C. (2007). Catalytic conversion of limonene over acid activated Serra de Dentro (SD) bentonite. Applied Catalysis A: General, 318, 108-120.pt_PT
dc.identifier.doi10.1016/j.apcata.2006.10.048pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3266
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCLAYCATS - Modified Porto Santo Clays as catalysts for liquid phase organic reactions
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAcid activated clayspt_PT
dc.subjectAciditypt_PT
dc.subjectCatalysispt_PT
dc.subjectLimonenept_PT
dc.subjectp-Cymenept_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleCatalytic conversion of limonene over acid activated Serra de Dentro (SD) bentonitept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCLAYCATS - Modified Porto Santo Clays as catalysts for liquid phase organic reactions
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCI/POCTI%2FCTM%2F47619%2F2002/PT
oaire.citation.endPage120pt_PT
oaire.citation.startPage108pt_PT
oaire.citation.titleApplied Catalysis A: Generalpt_PT
oaire.citation.volume318pt_PT
oaire.fundingStreamPOCI
person.familyNameFernandes
person.familyNameCastilho
person.givenNameCesar
person.givenNamePaula C
person.identifierA-4412-2013
person.identifier.ciencia-id6D15-8C69-A2E0
person.identifier.orcid0000-0001-9289-9962
person.identifier.orcid0000-0002-8303-4286
person.identifier.scopus-author-id14064572200
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication482857a3-4e6d-4453-bfc1-afb17ff8ce2a
relation.isAuthorOfPublicationd84fd917-438e-43bf-ac6f-256562481c05
relation.isAuthorOfPublication.latestForDiscoveryd84fd917-438e-43bf-ac6f-256562481c05
relation.isProjectOfPublication502c103c-116b-482c-9641-b06ad34d3d4b
relation.isProjectOfPublication.latestForDiscovery502c103c-116b-482c-9641-b06ad34d3d4b

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