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A thermogravimetric study of HDPE conversion under a reductive atmosphere

2021-11-01Journal article Restricted access
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dc.contributor.authorCosta, Cátia S.
dc.contributor.authorMUÑOZ, MARTA
dc.contributor.authorRibeiro, M. Rosário
dc.contributor.authorSilva, João
dc.date.accessioned2021-09-22T13:40:12Z
dc.date.available2021-09-22T13:40:12Z
dc.date.issued2021-11-01
dc.description.abstractThe plastic waste has suffered a dramatic increase and has become one of the biggest environmental problems nowadays. The chemical transformation of plastics by catalytic cracking under hydrogen atmosphere (hydrocracking) is one of the viable solutions to this problem since it can convert plastic residues into petrochemicals and fuels. In this work a thermogravimetric study of high-density polyethylene (HDPE) conversion under hydrogen atmosphere and in the presence of catalysts with different textural and chemical features is presented. The effect of distinct micro (H-ZSM-5, H-FER and H-MOR) and mesoporous (SBA-15 and MCM-41) catalysts is studied, both in terms of energy requirements and products distribution. Moreover, the effects of sample preparation method, catalyst amount, Si/Al ratio and incorporation of a metallic function (Ni and Pt) are also analyzed. The results show that when MCM-41 and SBA-15 mesoporous silicas are added to HDPE no significant changes are observed in terms of the degradation profile. On the contrary, the use of microporous materials decreases significantly the onset of HDPE degradation temperature. The accessibility and acidic content of the materials proved to be the most important factors influencing the HDPE degradation profiles. Moreover, the introduction of a metal function results in a further shift to lower degradation temperatures and favors the liquid products distribution, promoting the formation of gasoline and diesel.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCOSTA, Cátia S.; [et al] – A thermogravimetric study of HDPE conversion under a reductive atmosphere. Catalysis Today. ISSN 0920-5861. 379 (2021), pp. 192-204pt_PT
dc.identifier.doi10.1016/j.cattod.2020.07.021pt_PT
dc.identifier.eissn1873-4308
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10400.21/13782
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationProject ERANETMED/0003/ 2014 - FCTpt_PT
dc.relationCentro de Química Estrutural
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0920586120304843?via%3Dihubpt_PT
dc.subjectPlastic recyclingpt_PT
dc.subjectHydrocrackingpt_PT
dc.subjectHDPEpt_PT
dc.subjectMicroporous and mesoporous catalystspt_PT
dc.subjectHZSM-5pt_PT
dc.subjectThermogravimetric analysispt_PT
dc.titleA thermogravimetric study of HDPE conversion under a reductive atmospherept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F00100%2F2019/PT
oaire.citation.endPage204pt_PT
oaire.citation.startPage192pt_PT
oaire.citation.titleCatalysis Todaypt_PT
oaire.citation.volume379pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMUÑOZ
person.familyNameGomes Ribeiro
person.familyNameSilva
person.givenNameMARTA
person.givenNameMaria do Rosário
person.givenNameJoão Miguel Alves da
person.identifierE-6381-2013
person.identifierfWmw7kEAAAAJ
person.identifier.ciencia-id8412-BFED-AD4F
person.identifier.ciencia-id3F1B-A9AE-3FB8
person.identifier.ciencia-id3D1F-BD3A-4A9D
person.identifier.orcid0000-0002-4164-2224
person.identifier.orcid0000-0003-1704-1362
person.identifier.orcid0000-0003-1244-6483
person.identifier.scopus-author-id16317291000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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