Influence of the Catalyst Particle Size on the Aqueous Phase Reforming of n-Butanol Over Rh/ZrO2

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHarju, Heikkien_US
dc.contributor.authorPipitone, Giuseppeen_US
dc.contributor.authorLefferts, Leonen_US
dc.contributor.departmentSchool services, CHEMen
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.contributor.groupauthorHydrometallurgy and Corrosionen
dc.contributor.organizationPolytechnic University of Turinen_US
dc.contributor.organizationUniversity of Twenteen_US
dc.date.accessioned2020-03-06T15:26:26Z
dc.date.available2020-03-06T15:26:26Z
dc.date.issued2020-01-28en_US
dc.description.abstractButanol is a by-product obtained from biomass that can be valorized through aqueous phase reforming. Rh/ZrO2 catalysts were prepared and characterized, varying the size of the support particles. The results showed a relatively mild effect of internal mass transport on butanol conversion. However, the influence of internal transport limitations on the product distribution was much stronger, promoting consecutive reactions, i.e., dehydrogenation, hydrogenolysis, and reforming of propane and ethane. Hydrogen consuming reactions, i.e., hydrogenolysis, were more strongly enhanced than hydrogen producing reactions due to internal concentration gradients. Large support particles deactivated faster, attributed to high concentrations of butyraldehyde inside the catalyst particles, enhancing deposit formation via aldol condensation reactions. Consequently, also the local butyric acid concentration was high, decreasing the local pH, enhancing Rh leaching. The influence of internal transfer limitation on product distribution and stability is discussed based on a reaction scheme with three main stages, i.e., (1) formation of liquid intermediates via dehydrogenation, (2) formation of gas via decarbonylation/decarboxylation reactions, and (3) hydrocarbon hydrogenolysis/reforming/dehydrogenation.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationHarju, H, Pipitone, G & Lefferts, L 2020, ' Influence of the Catalyst Particle Size on the Aqueous Phase Reforming of n-Butanol Over Rh/ZrO 2 ', Frontiers in Chemistry, vol. 8, 17 . https://doi.org/10.3389/fchem.2020.00017en
dc.identifier.doi10.3389/fchem.2020.00017en_US
dc.identifier.issn2296-2646
dc.identifier.otherPURE UUID: b60805ee-ab0f-4950-9bd2-a5238386d391en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/b60805ee-ab0f-4950-9bd2-a5238386d391en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85079504833&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/41303117/CHEM_Harju_et_al_2020_Catalyst_Particle_Size_FronChem.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/43399
dc.identifier.urnURN:NBN:fi:aalto-202003062442
dc.language.isoenen
dc.publisherFRONTIERS MEDIA SA
dc.relation.ispartofseriesFrontiers in Chemistryen
dc.relation.ispartofseriesVolume 8en
dc.rightsopenAccessen
dc.subject.keywordaqueous phase reformingen_US
dc.subject.keywordhydrogenen_US
dc.subject.keywordmass transferen_US
dc.subject.keywordreaction pathwayen_US
dc.subject.keywordrhodiumen_US
dc.titleInfluence of the Catalyst Particle Size on the Aqueous Phase Reforming of n-Butanol Over Rh/ZrO2en
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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