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Ammonia borane dehydrogenation tendencies using Pt4, Au4, and Pt2Au2 clusters as catalysts

dc.contributor.authorEcheverri A.
dc.contributor.authorGomez T.
dc.contributor.authorHadad C.Z.
dc.date.accessioned2020-09-02T22:17:24Z
dc.date.available2020-09-02T22:17:24Z
dc.date.issued2019
dc.identifier10.1016/j.mcat.2019.04.012
dc.identifier.citation471, , 9-20
dc.identifier.issn24688231
dc.identifier.urihttps://hdl.handle.net/20.500.12728/4426
dc.descriptionSmall metallic clusters -mediated gas phase catalysis studies give lights to understand simple and complex catalytic processes, and help in the discovery and explanation of non-traditional “molecular-scale” catalytic systems. In this framework and in the context of clean energy sources based on hydrogen, a comparative study about ammonia borane (AB = NH3BH3) dehydrogenation tendencies, using Pt4, Au4, and Pt2Au2 clusters as catalysts, is made. Molecular details on thermal, kinetic (mechanistic) and reactivity factors are revealed. Our results indicate that all the metal tetramers studied here tends to dehydrogenate the ammonia borane molecule, being the processes exothermic, exergonic and fast. Among the studied catalysts, Pt2Au2 shows the best results, because is capable of easily detach several hydrogen atoms, with high probability of taking them out simultaneously, both from B and N, which helps in avoiding the breakage of B–N bond of AB, what is known to produce the poisoning of the catalyst by ammonia generation. © 2019 Elsevier B.V.
dc.language.isoen
dc.publisherElsevier B.V.
dc.subjectAmmonia borane
dc.subjectDehydrogenation
dc.subjectGold-platinum cluster catalyst
dc.subjectHydrogen
dc.subjectTheoretical study
dc.subjectAmmonia
dc.subjectAtoms
dc.subjectBinary alloys
dc.subjectDehydrogenation
dc.subjectHydrogen
dc.subjectMolecules
dc.subjectAmmonia borane
dc.subjectCatalytic process
dc.subjectClean energy sources
dc.subjectComparative studies
dc.subjectGas phase catalysis
dc.subjectMetallic clusters
dc.subjectPlatinum clusters
dc.subjectTheoretical study
dc.subjectCatalyst poisoning
dc.titleAmmonia borane dehydrogenation tendencies using Pt4, Au4, and Pt2Au2 clusters as catalysts
dc.typeArticle


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