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Polyolefin and Polystyrene‐Derived Carbon Nanotubes: Catalysts for Oxidative Desulfurization Under a Biphasic System

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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.sdg13:Ação Climática
dc.contributor.authorRoman, Fernanda
dc.contributor.authorBatista, Maria C.
dc.contributor.authorSilva, Adriano S.
dc.contributor.authorBezerra, Ana J.B.
dc.contributor.authorTuesta, Jose L. de Diaz de
dc.contributor.authorMambrini, Raquel V.
dc.contributor.authorSilva, Adrián
dc.contributor.authorFaria, Joaquim L.
dc.contributor.authorGomes, Helder
dc.date.accessioned2025-06-17T15:33:19Z
dc.date.available2025-06-17T15:33:19Z
dc.date.issued2025
dc.description.abstractThe conversion of plastic solid waste into carbon nanotubes (CNTs) via chemical vapor deposition (CVD) and the effectiveness of these CNTs as catalysts for oxidative desulfurization (ODS) of a simulated fuel were investigated. The primary focus is on the use of CNTs synthesized from various polymer sources, including polyolefins and polystyrene (PS), to remove sulfur compounds using hydrogen peroxide (H 2 O2 ) as an oxidant. The surface modification of CNTs by using acids (H2 SO4 or HNO3 ), the influence of the carbon feedstock (polyolefins vs PS), the use of co-catalysts, and the effect of the extractant phase were all evaluated on the oxidative removal of dibenzothiophene from a simulated fuel. Results revealed that CNTs derived from polyolefins displayed higher desulfurization efficiency (up to 77% in 8 h), with nitric acid-treated CNTs showing the best performance under oil-water biphasic systems. Replacing water with acetonitrile and adding a co-catalyst (formic acid) resulted in a desulfurization of 91% in 2 h of reaction. Under certain conditions, C─S bond cleav-age was observed. This research contributes to the valorization of plastic solid waste and the reduction of atmospheric pollution, promoting circular economy practices and environmental sustainability.eng
dc.description.sponsorshipThis work was financially supported by national funds through FCT/MCTES (PIDDAC): CIMO, UIDB/00690/2020 (DOI: 10.54499/UIDB/00690/2020) and UIDP/00690/2020 (DOI: 10.54499/UIDP/00690/2020); SusTEC, LA/P/0007/2020 (DOI: 10.54499/LA/P/0007/2020); LSRE-LCM, UIDB/50020/2020 (DOI: 10.54499/UIDB/50020/2020) and UIDP/50020/2020 (DOI: 10.54499/UIDP/50020/2020); ALiCE, LA/P/0045/2020 (DOI:10.54499/LA/P/0045/2020). F.F.R. acknowledges the national funding by FCT and the European Social Fund, FSE, through the individual research grant SFRH/BD/143224/2019. A.S.S. was sup- ported by the doctoral grant SFRH/BD/151346/2021, financed by FCT with funds from NORTE2020, under MIT Portugal Program. J.L.D.T. acknowledges the financial support through the program of Atracción al Talento of Comunidad de Madrid (Spain) for the individual research grant 2022-T1/AMB-23946. The authors are also grateful for the finantial support provided by Sociedade Ponto Verde for the project “Estudo técnico-económico para a valorização de resíduos de embalagens plásticas na produção de nanotubos de carbono”.
dc.identifier.citationRoman, Fernanda; Batista, Maria C.; Silva, Adriano S.; Bezerra, Ana Júlia Briganti; Tuesta, Jose L. de Diaz de; Mambrini, Raquel V.; Silva, Adrián M. T.; Faria, Joaquim L.; Gomes, Helder. (2025). Polyolefin and Polystyrene‐Derived Carbon Nanotubes: Catalysts for Oxidative Desulfurization Under a Biphasic System. ChemCatChem. ISSN 1867-3880. p. 1-13
dc.identifier.doi10.1002/cctc.202500233
dc.identifier.eissn1867-3899
dc.identifier.issn1867-3880
dc.identifier.urihttp://hdl.handle.net/10198/34610
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationMountain Research Center
dc.relationMountain Research Center
dc.relationAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
dc.relationLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
dc.relation.ispartofChemCatChem
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectChemical vapor deposition
dc.subjectFenton-like
dc.subjectNanomaterials
dc.subjectOxidative desulfurization
dc.subjectWaste valorization
dc.titlePolyolefin and Polystyrene‐Derived Carbon Nanotubes: Catalysts for Oxidative Desulfurization Under a Biphasic Systemeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMountain Research Center
oaire.awardTitleMountain Research Center
oaire.awardTitleAssociate Laboratory for Sustainability and Tecnology in Mountain Regions
oaire.awardTitleLaboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00690%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0007%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT
oaire.citation.endPage13
oaire.citation.startPage1
oaire.citation.titleChemCatChem
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.affiliation.nameCeDRI, Instituto Politécnico de Bragança
person.familyNameRoman
person.familyNameSilva
person.familyNameBezerra
person.familyNameGomes
person.givenNameFernanda
person.givenNameAdriano S.
person.givenNameAna J.B.
person.givenNameHelder
person.identifier.ciencia-idEE1B-DAA7-D0BD
person.identifier.ciencia-id3E14-5049-B09D
person.identifier.ciencia-id341B-2529-1112
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-5360-5298
person.identifier.orcid0000-0002-6795-2335
person.identifier.orcid0000-0001-6898-2408
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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