The catalytic activity of MoVTeNbO catalyst and its constituent phases (M1,
M2 and Mo5O14-like) in the oxidation of propane, as well as propylene and
acrolein, which are intermediates of acrylic acid formation from propane,
was studied. In all the reactions, the М1 phase shows higher activity and
selectivity, compared to M2 and Mo5O14-like phases; its presence being
sufficient for efficient proceeding the propane oxidation to acrylic acid.