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首页> 外文期刊>Russian Journal of Inorganic Chemistry >Vanadium- and Molybdenum-Containing Compositions Prepared by Mechanochemical and Following Thermal Treatments of V_2O_5/(NH_4)_2Mo_2O_7 (V/Mo = 0.7/0.3)
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Vanadium- and Molybdenum-Containing Compositions Prepared by Mechanochemical and Following Thermal Treatments of V_2O_5/(NH_4)_2Mo_2O_7 (V/Mo = 0.7/0.3)

机译：通过机械化学法和随后热处理V_2O_5 /（NH_4）_2Mo_2O_7（V / Mo = 0.7 / 0.3）制备的含钒和钼的组合物

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摘要

X-ray powder diffraction, DTA, FT-IR spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), nitrogen adsorption, and mercury porometry were used to characterize samples prepared as a result of mechanochemical treatment (MCT) of a V_2O_5/(NH_4)_2Mo_2O_7 (V/Mo = 0.7/0.3) composition in water, ethanol, and air, as well as after calcining them at temperatures from the range 300-700℃. The MCT of nonporous powders in water yields porous materials with definite meso- and macropore sizes. Heat treatment in air at 300-450℃ enhances the formation of a molybdenum substitutional solid solution in V_2O_5 and conserves rather high values of specific surface areas and pore volumes. An increase in heat treatment temperature is accompanied by the degradation of the solid solution and the formation of a V_2MoO_8 phase.
机译：X射线粉末衍射，DTA，FT-IR光谱，扫描电子显微镜（SEM），原子力显微镜（AFM），氮吸附和水银孔率法用于表征样品的机械化学处理（MCT）结果。 V_2O_5 /（NH_4）_2Mo_2O_7（V / Mo = 0.7 / 0.3）的成分在水，乙醇和空气中以及在300-700℃的温度下煅烧后组成。水中无孔粉末的MCT产生具有确定的中孔和大孔尺寸的多孔材料。在300-450℃的空气中进行热处理可增强V_2O_5中钼替代固溶体的形成，并保留相当高的比表面积和孔体积值。热处理温度的升高伴随着固溶体的降解和V_2MoO_8相的形成。

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