
Kinetic regularities of vapor ammoxidation of xylene on the V-Sb-Bi-Cr / γ-Al2O3-oxide catalyst in the temperature range 648-708K are studied. It is shown that the formation of the phthalimide occurs both directly from o-xylene and in parallel through tolunitrile phthalonitrile. It is determined that the carbon dioxide formed by oxidation of o-xylene and decarboxylation of phthalimide, and benzonitrile from o-tolunitrile, and phthalimide.