Nickel Supported on Mesoporous Zirconium Oxide by Atomic Layer Deposition

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorVoigt, Pauline
dc.contributor.authorHaimi, Eero
dc.contributor.authorLahtinen, Jouko
dc.contributor.authorCheah, You Wayne
dc.contributor.authorMäkelä, Eveliina
dc.contributor.authorViinikainen, Tiia
dc.contributor.authorPuurunen, Riikka L.
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineering
dc.contributor.departmentSchool common, CHEM
dc.contributor.departmentSurface Science
dc.contributor.departmentCatalysis
dc.contributor.departmentDepartment of Applied Physicsen
dc.date.accessioned2019-02-25T08:49:30Z
dc.date.available2019-02-25T08:49:30Z
dc.date.issued2019-08
dc.descriptionHUOM! Löyttyy myös ChemRxiv'ista: https://chemrxiv.org/articles/Nickel_Supported_on_Mesoporous_Zirconium_Oxide_by_Atomic_Layer_Deposition_Initial_Fixed-Bed_Reactor_Study/7204847
dc.description.abstractAtomic layer deposition (ALD) is gaining attention as a catalyst preparation method able to produce metal (oxide, sulphide, etc.) nanoparticles of uniform size down to single atoms. This work reports our initial experiments to support nickel on mesoporous zirconia. Nickel (2,2,6,6-tetramethyl-3,5-heptanedionate)2 [Ni(thd)2] was reacted in a fixed-bed ALD reactor with zirconia, characterised with BET surface area of 72 m2/g and mean pore size of 14 nm. According to X-ray fluorescence measurements, the average nickel loading on the top part of the support bed was on the order of 1 wt%, corresponding to circa one nickel atom per square nanometre. Cross-sectional scanning electron microscopy combined with energy-dispersive spectroscopy confirmed that in the top part of the fixed support bed, nickel was distributed throughout the zirconia particles. X-ray photoelectron spectroscopy indicated the nickel oxidation state to be two. Organic thd ligands remained complete on the surface after the Ni(thd)2 reaction with zirconia, as followed with diffuse reflectance infrared Fourier transform spectroscopy. The ligands could be fully removed by oxidation at 400 °C. These initial results indicate that nickel catalysts on zirconia can likely be made by ALD. Before catalytic testing, in addition to increasing the nickel loading by repeated ALD cycles, optimization of the process parameters is required to ensure uniform distribution of nickel throughout the support bed and within the zirconia particles.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdf
dc.identifier.citationVoigt , P , Haimi , E , Lahtinen , J , Cheah , Y W , Mäkelä , E , Viinikainen , T & Puurunen , R L 2019 , ' Nickel Supported on Mesoporous Zirconium Oxide by Atomic Layer Deposition : Initial Fixed-Bed Reactor Study ' , Topics in Catalysis , vol. 7–11 , pp. 611–620 . https://doi.org/10.1007/s11244-019-01133-wen
dc.identifier.doi10.1007/s11244-019-01133-w
dc.identifier.issn1022-5528
dc.identifier.issn1572-9028
dc.identifier.otherPURE UUID: 90a94317-ffae-4c65-a7a5-90924be64227
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/90a94317-ffae-4c65-a7a5-90924be64227
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85060183252&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/37499318/CHEM_Voigt_et_al_Nickel_Supported_2019_Topics_in_Catalysis.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/36816
dc.identifier.urnURN:NBN:fi:aalto-201902251973
dc.language.isoenen
dc.publisherSPRINGER/PLENUM PUBLISHERS
dc.relation.ispartofseriesTopics in Catalysisen
dc.rightsopenAccessen
dc.subject.keywordAtomic layer deposition
dc.subject.keywordCatalyst
dc.subject.keywordLigand removal
dc.subject.keywordNickel
dc.subject.keywordParticles
dc.subject.keywordZirconia
dc.titleNickel Supported on Mesoporous Zirconium Oxide by Atomic Layer Depositionen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion
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