Fast synthesis of the polycrystalline materials on the base of

In our study we applied two different techniques for the preparation of Zn 3 V 2 MoO 11 and Zn 2.5 VMoO 8 polycrystalline materials - melt quenching method (up-bottom) and mechanochemical synthesis (bottom- up). These compounds belong to the family of materials with general formula M 2.5 VMoO 8 (M=Zn, Mg, Mn, Co). They are potential candidates as catalysts in processes of selective oxidation of hydrocarbons. Until now, these two compounds were obtained by conventional solid state reaction. Using infrared spectroscopy and X-ray diffraction we proved that the melt quenching technique is a quite appropriate method for the synthesis of bulk Zn 3 V 2MoO 11 phase. Mechanochemical activation is more appropriated for the preparation of nonosized Zn 2.5 VMoO 8 powder. It was established that the melt quenching technique and mechanochemical activation are faster in comparison with conventional ceramic methods for the given synthesis.