Physicochemical and catalytic properties of vanadium molybdenum oxide catalyst prepared from vanadyl oxalate

The formation of the phase composition, porous structure and catalytic properties of vanadium molybdenum oxide catalyst prepared by sputtered drying of the ammonium paramolybdate and banadyl oxalate with subsequent thermal treatment in the air flow is considered. Comparative study of catalyst properties depending on chemical nature of the initial vanadium compound-vanadyl oxalate and ammonium metavanadate is carried out. It is shown that VMo3O11 compound formation at air flow thermal treatment in a rather broad temperature range (300-400 deg) makes preferable using vanadyl oxalate as compared with ammonium metavanadate for the synthesis of massive vanadium molybdenum oxide catalysts of partial acrolein oxidation to acrylic acid