High-temperature heat capacity of the oxide compounds in the Bi2O3–V2O5 system


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The compounds BiVO4, Bi4V2O11, and Bi12V2O23 have been prepared by solid-state synthesis using stoichiometric mixtures of Bi2O3 and V2O5. The effect of temperature on the heat capacity of the synthesized bismuth vanadates has been studied by differential scanning calorimetry in the range 350–950 K. The Cp(T) curves have extrema at 531.7 K for BiVO4 and at 725.2 and 852.8 K for Bi4V2O11, which are due to polymorphic transformations of these compounds.

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L. Denisova

Institute of Nonferrous Metals and Materials Science

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Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

L. Irtyugo

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

Yu. Kargin

Baikov Institute of Metallurgy and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Leninskii pr. 49, Moscow, 119991

L. Chumilina

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

N. Belousova

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

V. Denisov

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

N. Galiakhmetova

Institute of Nonferrous Metals and Materials Science

Email: antluba@mail.ru
俄罗斯联邦, Svobodnyi pr. 79, Krasnoyarsk, 660041

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