Publicação
Selective oxidation of quinoline in an emulsified system using carbon nanotubes derived from LDPE as catalysts: pH effect
| dc.contributor.author | Roman, Fernanda | |
| dc.contributor.author | Díaz de Tuesta, Jose Luis | |
| dc.contributor.author | Silva, Adrián | |
| dc.contributor.author | Faria, Joaquim | |
| dc.contributor.author | Gomes, Helder | |
| dc.date.accessioned | 2023-02-27T15:10:33Z | |
| dc.date.available | 2023-02-27T15:10:33Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | Nitrogenated compounds are naturally found in petroleum-based products. Upon their combustion, hazardous gases (NOx) are generated, leading to environmental and health issues. To overcome the downsides related to nitrogen oxides,1 catalytic oxidative denitrogenation (ODN) with H2O2 is currently seen as a suitable alternative to traditional hydrodenitrogenation. In this work, the catalysts for ODN consisted of carbon nanotubes synthesized from low-density polyethylene as a carbon source by chemical vapor deposition (850 °C, 1 h). A simulated fuel was prepared by dissolving quinoline (QN) in 2,2,4- trimethylpentane ([N]0 = 50 ppm, [QN]0 = 460 ppm). ODN was carried out in an emulsified system (80:20 2,2,4-trimethylpentane:water, Vtotal = 20 mL) at 50 °C, 4 h, Ccatalyst = 2.5 g L- 1 and VH2O2, 30 wt.% = 0.9 mL (5.5× the stoichiometric ratio for QN mineralization). The emulsion was formed by sonication for 15 min. The obtained results are summarized in Fig. 1. ODN carried out at the initial pH (pH0) 3.5 resulted in 74% of QN removal from the oil phase, which is far higher when compared to only 15% removal occurring by mass transference (test conducted with an aqueous phase free of H2O2 and catalyst). At pH0 = 6.5, QN removal from the oil phase decreased drastically to 33%, indicating that a lower pH favor QN removal. | pt_PT |
| dc.description.sponsorship | This work was financially supported by project “PLASTIC_TO_FUEL&MAT – Upcycling Waste Plastics into Fuel and Carbon Nanomaterials” (PTDC/EQU-EQU/31439/2017), by Base-UIDB/50020/2020 and Programmatic-UIDP/50020/2020 funding of LSRE-LCM - funded by national funds through FCT/MCTES (PIDDAC), and CIMO (UIDB/00690/2020) through FEDER under Program PT2020. Fernanda F. Roman acknowledges the Foundation for Science and Technology (FCT) and the European Social Fund (FSE) for the individual research grant with reference SFRH/BD/143224/2019 | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Roman, Fernanda; Díaz de Tuesta, Jose Luis; Silva, Adrián; Faria, Joaquim; Gomes, Helder (2021). Selective oxidation of quinoline in an emulsified system using carbon nanotubes derived from LDPE as catalysts: pH effect. In Book of Abstracts of XI National Meeting on Catalysis and Porous Materials - II Meeting of the Carbon Group. Aveiro | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10198/27245 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Sociedade Portuguesa de Química | pt_PT |
| dc.relation | Upcycling Waste Plastics into Fuel and Carbon Nanomaterials | |
| dc.relation | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| dc.relation | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| dc.relation | Mountain Research Center | |
| dc.relation | Amphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Nitrogenated compounds | pt_PT |
| dc.subject | Research Subject Categories::TECHNOLOGY::Chemical engineering::Food technology | pt_PT |
| dc.title | Selective oxidation of quinoline in an emulsified system using carbon nanotubes derived from LDPE as catalysts: pH effect | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.awardNumber | PTDC/EQU-EQU/31439/2017 | |
| oaire.awardNumber | UIDB/50020/2020 | |
| oaire.awardNumber | UIDP/50020/2020 | |
| oaire.awardNumber | UIDB/00690/2020 | |
| oaire.awardNumber | SFRH/BD/143224/2019 | |
| oaire.awardTitle | Upcycling Waste Plastics into Fuel and Carbon Nanomaterials | |
| oaire.awardTitle | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| oaire.awardTitle | Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials | |
| oaire.awardTitle | Mountain Research Center | |
| oaire.awardTitle | Amphiphilic carbon-based materials for one-pot desulfurization and denitrogenation of liquid fuels | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FEQU-EQU%2F31439%2F2017/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50020%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50020%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00690%2F2020/PT | |
| oaire.awardURI | info:eu-repo/grantAgreement/FCT/POR_NORTE/SFRH%2FBD%2F143224%2F2019/PT | |
| oaire.citation.conferencePlace | Aveiro | pt_PT |
| oaire.citation.endPage | 99 | pt_PT |
| oaire.citation.startPage | 99 | pt_PT |
| oaire.citation.title | XI National Meeting on Catalysis and Porous Materials: Book of abstracts | pt_PT |
| oaire.fundingStream | 9471 - RIDTI | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | 6817 - DCRRNI ID | |
| oaire.fundingStream | POR_NORTE | |
| person.familyName | Roman | |
| person.familyName | Díaz de Tuesta | |
| person.familyName | Gomes | |
| person.givenName | Fernanda F. | |
| person.givenName | Jose Luis | |
| person.givenName | Helder T. | |
| person.identifier.ciencia-id | EE1B-DAA7-D0BD | |
| person.identifier.ciencia-id | 7A1F-022B-7DBF | |
| person.identifier.ciencia-id | 6218-1E19-13EE | |
| person.identifier.orcid | 0000-0001-5360-5298 | |
| person.identifier.orcid | 0000-0003-2408-087X | |
| person.identifier.orcid | 0000-0001-6898-2408 | |
| person.identifier.rid | D-9785-2017 | |
| person.identifier.scopus-author-id | 55755821600 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.identifier | http://doi.org/10.13039/501100001871 | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| project.funder.name | Fundação para a Ciência e a Tecnologia | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
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