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dc.contributor.authorTsakoumis, Nikolaos
dc.contributor.authorPatanou, Eleni
dc.contributor.authorLögdberg, Sara
dc.contributor.authorJohnsen, Rune
dc.contributor.authorMyrstad, Rune
dc.contributor.authorVan Beek, Wouter
dc.contributor.authorRytter, Erling
dc.contributor.authorBlekkan, Edd Anders
dc.date.accessioned2019-04-29T13:54:54Z
dc.date.available2019-04-29T13:54:54Z
dc.date.created2019-01-18T13:21:56Z
dc.date.issued2018
dc.identifier.citationACS Catalysis. 2018, 9 511-520.nb_NO
dc.identifier.issn2155-5435
dc.identifier.urihttp://hdl.handle.net/11250/2596002
dc.description.abstractUnderstanding and utilizing structure–performance relationships in catalytic nanomaterials is the epitome of catalysis science. Knowledge at the atomic level can potentially allow rational design of more selective and energy-efficient catalytic materials. Fischer–Tropsch synthesis on cobalt is an example of a complicated system that operates in a narrow process regime, and the nature of the reaction product is governed by numerous parameters. On an industrial model catalyst, we have simplified the structure of the active, metallic nanoparticles into a predominantly hexagonal close-packed structure via the use of a Co2C precursor. By varying the final reduction temperature, we could mildly modify catalyst microstructural properties at the nanoparticle (NP) level. Catalytic materials, although with minimal structural differences, showed significantly different performance. Evidently there is a narrow window for complete utilization of the hexagonal close-packed Co crystallites that lies between removal of lattice carbon, that remains from the Co2C precursor, and the initiation of stacking disorder, because of a transition to the face-centered cubic Co structure. Fischer–Tropsch synthesis performance indicators show that Co NPs with minimum number of crystal defects outperform catalysts with lattice defects, because of the existence of either lattice carbon or stacking faults. Therefore, catalyst preparation and activation procedures probably should be designed targeting defect-free Co crystallites.nb_NO
dc.language.isoengnb_NO
dc.publisherAmerican Chemical Societynb_NO
dc.titleStructure-performance relationships on Co based Fischer–Tropsch synthesis catalysts: The more defect free the betternb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber511-520nb_NO
dc.source.volume9nb_NO
dc.source.journalACS Catalysisnb_NO
dc.identifier.doi10.1021/acscatal.8b03549
dc.identifier.cristin1660271
dc.description.localcode© American Chemical Society 2018. This is the authors accepted and refereed manuscript to the article. Locked until 3.12.2019 due to copyright restrictions.nb_NO
cristin.unitcode194,66,30,0
cristin.unitnameInstitutt for kjemisk prosessteknologi
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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