Untangling the cobalt promotion role for ruthenium in sodium borohydride dehydrogenation with multiwalled carbon nanotube-supported binary ruthenium cobalt catalyst

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dc.authoridAvci Hansu, Tulin/0000-0001-5441-4696
dc.authoridKivrak, Hilal/0000-0001-8001-7854
dc.contributor.authorAvci Hansu, Tulin
dc.contributor.authorSahin, Omer
dc.contributor.authorcaglar, Aykut
dc.contributor.authorDemir Kivrak, Hilal
dc.date.accessioned2024-12-24T19:24:09Z
dc.date.available2024-12-24T19:24:09Z
dc.date.issued2021
dc.departmentSiirt Üniversitesi
dc.description.abstractIn the present study, multiwalled carbon nanotube-supported Ru (Ru/MWCNT) and RuCo (RuCo/MWCNT) nanocatalysts with 3 wt% Ru loading were synthesized via sodium borohydride (SBH) reduction method for the dehydrogenation of SBH (R-SBH)(.) These nanocatalysts were characterized with XRD, XPS, SEM-EDX, and TEM. Ru/MWCNT and Ru:Co/MWCNT catalysts with varying Ru:Co atomic ratios were prepared successfully, and electronic state of Ru:Co altered compared to Ru. R-SBH activities of these Ru/MWCNT and RuCo/MWCNT were examined in alkaline environment. RuCo/MWCNT at 80:20 atomic ratio exhibits superior H-2 evolution. Further experiments were performed with RuCo/MWCNT at 80:20 atomic ratio to determine how NaOH concentration (C-NaOH), reaction temperature (T-rxn), SBH concentration (C-SBH), and amount of nanocatalyst (M-c) affect R-SBH activities. Activation energy (Ea) was calculated using the Arrhenius equation. RuCo/MWCNT at 80:20 atomic ratio exhibits superior H-2 evolution activities compared to the literature values. Initial rate (IR) for this nanocatalyst was found as 123.9385 mL H-2 g(cat)(-1) min(-1). As a result of these kinetic calculations, the Ea of the nanocatalysts was calculated as 35.978 kJ/mol. The degree of reaction (n) was found to be 0.53 by trial and error. RuCo/MWCNT at 80:20 atomic ratio is a promising nanocatalyst for R-SBH.
dc.description.sponsorshipVan Yuzuncu Yil University [FDK-2018-7611]
dc.description.sponsorshipVan Yuzuncu Yil University, Grant/Award Number: FDK-2018-7611
dc.identifier.doi10.1002/er.6226
dc.identifier.endpage6066
dc.identifier.issn0363-907X
dc.identifier.issn1099-114X
dc.identifier.issue4
dc.identifier.scopus2-s2.0-85096797050
dc.identifier.scopusqualityQ1
dc.identifier.startpage6054
dc.identifier.urihttps://doi.org/10.1002/er.6226
dc.identifier.urihttps://hdl.handle.net/20.500.12604/5862
dc.identifier.volume45
dc.identifier.wosWOS:000591623200001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley-Hindawi
dc.relation.ispartofInternational Journal of Energy Research
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241222
dc.subjectcharacterization
dc.subjectdehydrogenation
dc.subjectnanocatalyst
dc.subjectRuCo
dc.subjectsodium borohydride
dc.titleUntangling the cobalt promotion role for ruthenium in sodium borohydride dehydrogenation with multiwalled carbon nanotube-supported binary ruthenium cobalt catalyst
dc.typeArticle

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