Solid-state interactions of vanadium and phosphorus oxides in the closed systems |
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Authors: | V Sydorchuk S Khalameida V Zazhigalov J Skubiszewska-Zięba R Leboda |
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Institution: | (1) Institute for Sorption and Problems of Endoecology, Ukrainian National Academy of Sciences, 13 Naumov Str., Kyiv, 03164, Ukraine;(2) Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20031 Lublin, Poland; |
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Abstract: | Physicochemical processes during thermal treatment of vanadium and phosphorus oxides mixture (1) as well as with diammonium
hydrophosphate (2) in the closed system (autoclave) have been studied. In the first case, at 300 °C, the defective structure
γ-VOPO4 is formed and in the second case, there was established possibility of synthesis of vanadyl hydrophosphate—the precursor
of vanadyl pyrophosphate (the catalyst of n-butane oxidation to maleic anhydride). At the same time, various phases of mixed ammonium and vanadium phosphates were obtained
at lower and higher temperatures. |
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