Catalytic effects in propene ammoxidation achieved through substitutions in the M2 phase of the Mo-V-Nb-Te-oxide system
M2-type phases M3TeO10 (M = Mo and V), belonging to the Mo-V-Nb-Te-oxide system, were prepared by substituting to various degrees the M-metal with W, Ti, Nb or Fe, and Te with Ce. The compositions were characterized by BET, XRD and XPS and were studied for propene ammoxidation. The variations of the unit cell parameters with substitution reveal that the orthorhombic, pseudo-hexagonal M2 structure
