Ceria-supported ruthenium nanoparticles as highly active and long-lived catalysts in hydrogen generation from the hydrolysis of ammonia borane

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dc.contributor.authorAkbayrak, Serdar
dc.contributor.authorTonbul, Yalcin
dc.contributor.authorOzkar, Saim
dc.date.accessioned2024-04-24T16:24:05Z
dc.date.available2024-04-24T16:24:05Z
dc.date.issued2016
dc.departmentDicle Üniversitesien_US
dc.description.abstractRuthenium(0) nanoparticles supported on ceria (Ru-0/CeO2) were in situ generated from the reduction of ruthenium(III) ions impregnated on ceria during the hydrolysis of ammonia borane. Ru-0/CeO2 was isolated from the reaction solution by centrifugation and characterized by ICP-OES, BET, XRD, TEM, SEM-EDS and XPS techniques. All the results reveal that ruthenium(0) nanoparticles were successfully supported on ceria and the resulting Ru-0/CeO2 is a highly active, reusable and long-lived catalyst for hydrogen generation from the hydrolysis of ammonia borane with a turnover frequency value of 361 min(-1). The reusability tests reveal that Ru-0/CeO2 is still active in the subsequent runs of hydrolysis of ammonia borane preserving 60% of the initial catalytic activity even after the fifth run. Ru-0/CeO2 provides a superior catalytic lifetime (TTO = 135 100) in hydrogen generation from the hydrolysis of ammonia borane at 25.0 +/- 0.1 degrees C before deactivation. The work reported here includes the formation kinetics of ruthenium(0) nanoparticles. The rate constants for the slow nucleation and autocatalytic surface growth of ruthenium(0) nanoparticles were obtained using hydrogen evolution as a reporter reaction. An evaluation of rate constants at various temperatures enabled the estimation of activation energies for both the reactions, E-a = 60 +/- 7 kJ mol(-1) for the nucleation and E-a = 47 +/- 2 kJ mol(-1) for the autocatalytic surface growth of ruthenium(0) nanoparticles, as well as the activation energy of E-a = 51 +/- 2 kJ mol(-1) for the catalytic hydrolysis of ammonia borane.en_US
dc.description.sponsorshipTurkish Academy of Sciences (TUBA)en_US
dc.description.sponsorshipPartial support by Turkish Academy of Sciences (TUBA) is gratefully acknowledged. We would like to thank Ilker YIldIz for XPS analyses.en_US
dc.identifier.doi10.1039/c6dt01117a
dc.identifier.endpage10978en_US
dc.identifier.issn1477-9226
dc.identifier.issn1477-9234
dc.identifier.issue27en_US
dc.identifier.pmid27302302
dc.identifier.scopus2-s2.0-84978998509
dc.identifier.scopusqualityQ2
dc.identifier.startpage10969en_US
dc.identifier.urihttps://doi.org/10.1039/c6dt01117a
dc.identifier.urihttps://hdl.handle.net/11468/16473
dc.identifier.volume45en_US
dc.identifier.wosWOS:000379593800014
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherRoyal Soc Chemistryen_US
dc.relation.ispartofDalton Transactions
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keyword]en_US
dc.titleCeria-supported ruthenium nanoparticles as highly active and long-lived catalysts in hydrogen generation from the hydrolysis of ammonia boraneen_US
dc.titleCeria-supported ruthenium nanoparticles as highly active and long-lived catalysts in hydrogen generation from the hydrolysis of ammonia borane
dc.typeArticleen_US

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