| abstract |
Process for the preparation of aromatic nitriles, in particular phthaloyl dinitriles, from corresponding alkyl-substituted aromatic hydrocarbons by catalytic oxidation with gases containing oxygen or oxygen in the presence of ammonia at elevated temperature in the vapor phase in the presence of a catalyst which contains 2 to 10% by weight of vanadium (V. ) oxide, 1 to 10% by weight of antimony (III) oxide, 0.02 to 2% by weight of alkali oxide and aluminum oxide, the catalyst being 0.01 to 1.0% by weight of an alkaline earth metal, or a compound an alkaline earth metal, in particular barium or a barium compound. |