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- W2017394996 abstract "We have prepared a member with n=2 of the series of layered perovskites of general formula AA'n−1NbnO3n+1 (KLaNb2O7) and its proton-exchanged derivative HLaNb2O7. We have found that a reductive intercalation of additional protons is possible for the latter under reducing condition, to yield a “blue” derivative H1+xLaNb2O7, where the Nb ion is partially reduc ed to Nb(IV). The reduced species is readily oxidized in air to form back its parent compound. Alternatively, a more stable form of the reduced oxide can be obtained by treatment under Ar/H2 at 650°C. The mixed valence state is confirmed by the observation of an Inter Valence Charge Transfer band at 1100 nm. This species can be considered as a blue hydrogen bronze of niobium." @default.
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- W2017394996 date "1993-09-01" @default.
- W2017394996 modified "2023-10-17" @default.
- W2017394996 title "Synthesis of a reduced niobium “blue” with a layered perovskite structure" @default.
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- W2017394996 doi "https://doi.org/10.1016/0167-2738(93)90139-t" @default.
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