| abstract |
A process for the preparation of a highly selective catalyst and its application in the production of cyanopyridines by oxidative ammonolysis of alkylpyridines is described. The catalytic composition is defined by the formula: Va Tib Zrc Ox, wherein a is 1, b is 7.5 to 8, c is 0 to 0.5, x represents the number of oxygen atoms necessary to satisfy the valency requirements of the elements present. |