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Synthesis of Non-Cubic Nitride Phases of Va-Group Metals (V, Nb, and Ta) from Metal Powders in Stream of NH3 Gas under Concentrated Solar Radiation

2021-04-20Journal article Open access
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dc.contributor.authorSHOHOJI, Nobumitsu
dc.contributor.authorOliveira, F. A. Costa
dc.contributor.authorGalindo, José
dc.contributor.authorRodríguez, José
dc.contributor.authorCañadas, Inmaculada
dc.contributor.authorFernandes
dc.contributor.authorRosa, Luis G.
dc.date.accessioned2022-07-11T14:09:26Z
dc.date.available2022-07-11T14:09:26Z
dc.date.issued2021-04-20
dc.description.abstractUsing a high-flux solar furnace, loosely compacted powders of Va-group transition metal (V, Nb, and Ta) were reacted with stream of NH3 gas (uncracked NH3 gas) being heated by concentrated solar beam to a temperature (T) range between 600 and 1000 °C. From V, sub-nitride V2N (γ phase) and hypo-stoichiometric mono-nitride VN possessing fcc (face-centered cubic) crystal lattice structure (δ phase) were synthesized. On the other hand, in the reaction product from Nb and Ta, hexagonal mono-nitride phase with N/M atom ratio close to 1 (ε phase) was detected. The reaction duration was normalized to be 60 min. In a conventional industrial or laboratory electric furnace, the synthesis of mono-nitride phase with high degree of crystallinity that yield sharp XRD peaks for Va-group metal might take a quite long duration even at T exceeding 1000 °C. In contrast, mono–nitride phase MN of Va-group metal was synthesized for a relatively short duration of 60 min at T lower than 1000 °C being co-existed with lower nitride phases.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSHOHOJI, Nobumitsu; [et al] – Synthesis of Non-Cubic Nitride Phases of Va-Group Metals (V, Nb, and Ta) from Metal Powders in Stream of NH3 Gas under Concentrated Solar Radiation. ChemEngineering. ISSN 2305-7084. Vol. 5, N.º 2 (2021), pp. 1-11.pt_PT
dc.identifier.doi10.3390/chemengineering5020019pt_PT
dc.identifier.issn2305-7084
dc.identifier.urihttp://hdl.handle.net/10400.21/14821
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relation.publisherversionhttps://www.mdpi.com/2305-7084/5/2/19pt_PT
dc.subjectConcentrated solar radiationpt_PT
dc.subjectUncracked NH3 gaspt_PT
dc.subjectNitridept_PT
dc.subjectVanadiumpt_PT
dc.subjectNiobiumpt_PT
dc.subjectTantalumpt_PT
dc.titleSynthesis of Non-Cubic Nitride Phases of Va-Group Metals (V, Nb, and Ta) from Metal Powders in Stream of NH3 Gas under Concentrated Solar Radiationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.citation.endPage11pt_PT
oaire.citation.issue2pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleChemEngineeringpt_PT
oaire.citation.volume5pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSHOHOJI
person.familyNamede Almeida Costa Oliveira
person.familyNameGalindo
person.familyNameCañadas
person.familyNameCruz Fernandes
person.familyNameGuerra da Silva Rosa
person.givenNameNobumitsu
person.givenNameFernando
person.givenNameJosé
person.givenNameInmaculada
person.givenNameJorge
person.givenNameLuis Manuel
person.identifierhttps://publons.com/researcher/2819004/fernando-de-almeida-costa-oliveira/
person.identifier303498
person.identifierF-2513-2010
person.identifier.ciencia-id561B-597F-9D55
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.ciencia-id2712-54B2-0A43
person.identifier.orcid0000-0002-9499-7280
person.identifier.orcid0000-0002-1503-0152
person.identifier.orcid0000-0001-6068-182X
person.identifier.orcid0000-0001-8637-1547
person.identifier.orcid0000-0002-1573-6067
person.identifier.orcid0000-0003-4730-3765
person.identifier.ridA-5751-2012
person.identifier.ridB-4450-2008
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=23019925500
person.identifier.scopus-author-id7006963723
person.identifier.scopus-author-id24278417800
person.identifier.scopus-author-id57224511396
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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