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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

2021-06Journal article Open access
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dc.contributor.authorShohoji, Nobumitsu
dc.contributor.authorOliveira, Fernando Almeida Costa
dc.contributor.authorGalindo, José
dc.contributor.authorRodriguez, Jose
dc.contributor.authorCañadas, Inmaculada
dc.contributor.authorFernandes, Jorge Cruz
dc.contributor.authorRosa, Luís Guerra
dc.date.accessioned2022-01-11T11:54:49Z
dc.date.available2022-01-11T11:54:49Z
dc.date.issued2021-06
dc.description.abstractABSTRACT: Using 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 degrees C. From V, sub-nitride V2N (gamma phase) and hypo-stoichiometric mono-nitride VN possessing fcc (face-centered cubic) crystal lattice structure (delta 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 (epsilon 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 degrees 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 degrees 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. In: Chemengineering, 2021, Vol. 5 (2), article nº 19pt_PT
dc.identifier.doi10.3390/chemengineering5020019pt_PT
dc.identifier.eissn2305-7084
dc.identifier.urihttp://hdl.handle.net/10400.9/3683
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationALT20-03-0145-FEDER-022113pt_PT
dc.relationSolar Facilities for the European Research Area - Third Phase
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relation.publisherversionhttps://doi.org/10.3390/chemengineering5020019pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectConcentrated solar powerpt_PT
dc.subjectNitridept_PT
dc.subjectAmmonia (NH3)pt_PT
dc.subjectSolar furnacept_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.awardTitleSolar Facilities for the European Research Area - Third Phase
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/823802/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.citation.issue2pt_PT
oaire.citation.titleChemengineeringpt_PT
oaire.citation.volume5pt_PT
oaire.fundingStreamH2020
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSHOHOJI
person.familyNameOliveira
person.familyNameRodriguez
person.familyNameCañadas
person.familyNameFernandes
person.givenNameNobumitsu
person.givenNameFernando
person.givenNameJose
person.givenNameInmaculada
person.givenNameJorge
person.identifier647144
person.identifier.ciencia-id561B-597F-9D55
person.identifier.ciencia-id7B1F-EB22-9FF4
person.identifier.orcid0000-0002-9499-7280
person.identifier.orcid0000-0002-1503-0152
person.identifier.orcid0000-0001-7153-7743
person.identifier.orcid0000-0001-8637-1547
person.identifier.orcid0000-0002-1573-6067
person.identifier.ridA-5751-2012
person.identifier.ridA-2312-2011
person.identifier.ridA-5241-2013
person.identifier.scopus-author-id23019925500
person.identifier.scopus-author-id35592804100
person.identifier.scopus-author-id24278417800
person.identifier.scopus-author-id6602405560
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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