METHOD FOR PRODUCING MOLYBDENUM TRIOXIDE h-MoO Russian patent published in 2023 - IPC C01G39/02 

FIELD: chemical industry.

SUBSTANCE: invention relates to a method for producing oxide compounds of transition metals, in particular molybdenum trioxide h-MoO₃, which can be used as an effective electrode material for supercapacitors, a photocatalyst for the decomposition of tetracycline under the action of visible light, a sensor material for determining the concentration of ammonia in air at room temperature and the neonicotinoid pestle imidacloprid, a photochromic material, an organic dye adsorbent in a wide pH range. Obtaining molybdenum trioxide h-MoO₃ includes hydrothermal treatment of an aqueous solution of ammonium paramolybdate tetrahydrate (NH₄)₆Mo₇O₂₄⋅4H₂O in the presence of an ionic liquid, followed by filtration, washing and drying of the resulting product. As an ionic liquid, a 20% aqueous solution of poly(sodium 4-styrenesulfonate) (C₈H₇O₃SNa)_n is used, taken in the ratio, wt: ammonium paramolybdate tetrahydrate : poly(sodium 4-styrenesulfonate) in terms of 20% aqueous solution, equal to 1.5:(0.35-0.70). Hydrothermal treatment is carried out with microwave radiation with a frequency of 2.45 GHz and a power of 15-20 W with constant stirring at a speed of 100-300 rpm at a temperature of 160-200°C and a pressure of 10-20 bar for 5-10 minutes.

EFFECT: high quality molybdenum trioxide h-MoO₃.

1 cl, 2 dwg, 2 ex