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- W3126384560 endingPage "111121" @default.
- W3126384560 startingPage "111121" @default.
- W3126384560 abstract "It is more difficult to synthesize β-phase ytterbium trihydride (β-YbH3−δ) under moderate conditions than other rare-earth metal trihydrides because it requires a valence change from a fully occupied 4f shell (4f14) in Yb2+ to an unclosed shell (4f13) in Yb3+. We synthesized β-YbH3−δ at ambient pressure through hydrogenation of a Yb film capped with platinum (Pt) nanoparticle (NP) catalysts. In addition, Pt NP capping enabled us to synthesize α-phase Yb dihydride (α-YbH2±δ) at room temperature. The difficulty of trihydrogenating Yb to β-YbH3−δ is explained by kinetic analyses based on temperature and time dependences of molar fractions of α-YbH2±δ and β-YbH3−δ. Pt NP capping can be used to synthesize other hydrogen-rich rare-earth metal hydrides under ambient pressure and lower temperatures." @default.
- W3126384560 created "2021-02-15" @default.
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- W3126384560 date "2021-04-01" @default.
- W3126384560 modified "2023-09-26" @default.
- W3126384560 title "Nanoparticulate Pt-catalyzed hydrogenation of Yb films: Towards hydrides with higher hydrogen compositions" @default.
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- W3126384560 doi "https://doi.org/10.1016/j.chemphys.2021.111121" @default.
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