Conclusions
A new method for obtaining pyroperoxoniobates of the alkali metalswith the composition(Na, K)4Nb2O11 · 2H2O has been developed.
The solid salts (Na, K)4Nb2O11 · 2H2O are stable above 100°. They decompose completely ∼300° with the formation of pyro salts having the composition (Na, K)4Nb2O7 of reagent purity.
Literature cited
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K. I. Selezneva, Synthesis and Physicochemical Study of Peroxy Compounds of Niobium [in Russian], Author's abstract of dissertation, Moscow (1965).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1281–1283, July, 1966.
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Selezneva, K.I. Synthesis of pyroperoxoniobates of the alkali metals. Russ Chem Bull 15, 1236–1238 (1966). https://doi.org/10.1007/BF00847778
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DOI: https://doi.org/10.1007/BF00847778