| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to a method for oxidative ammonolysis of a saturated hydrocarbon to obtain an unsaturated nitrile. The method involves preparing a catalytic mixture containing freshly prepared mixed metal oxide catalyst, a spent mixed metal oxide catalyst and an activity modifier, and contacting the saturated hydrocarbon with an oxygen-containing gas and ammonia in the presence of the catalytic mixture. The freshly prepared and spent mixed metal oxide catalysts contain molybdneum, vanadium, niobium and at least one element selected from antimony and tellurium, and optionally contain at least one element selected from lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, tungsten, titanium, tin, germanium, zirconium, lithium and hafnium. The catalysts can optionally contain a support selected from oxides of silicon, aluminium, zirconium, titanium or mixtures thereof. The activity modifier is selected from antimony (III) oxide, antimony (III) oxalate, antimony (III) tartrate, antimony (V) oxide, antimony tetroxide, SbOand mixtures thereof. The invention also relates to a method for oxidative ammonolysis, which involves mechanical mixing of a dry mixed metal oxide catalyst and an activity modifier to form a catalytic mixture and contacting a saturated hydrocarbon with an oxygen-containing gas and ammonia in the presence of said mixture.EFFECT: disclosed methods increase output of the end product.13 cl, 3 tbl, 4 ex |
