PARAFFIN AMMOXIDATION BY USING CATALYSTS BASED ON VANADIUM-ANTIMONY OXIDE WITH HALIDE PROMOTERS

摘要

The method for the ammoxidation of C3 to C5 paraffin hydrocarbon to its respective-unsaturated nitrile includes the reaction between C3 to C5 paraffin hydrocarbon and ammonia and oxygen in a reactor with fluidized bed at temperatures from 250 to 600 deg.C in the presence of catalyst having the following empiric formula VvSlmAaDdOx where A whenever present means tin and/or titanium; D when present means one or more of the following elements: lithium, magnesium, sodium, calcium, strontium, barium, cobalt, iron, chromium, gallium, nickel, zinc, germanium, niobium, zirconium, molybdenum, tungsten, copper, tellurium, tantalum, selenium, bismuth, cerium, indium, arsenic, boron, aluminium, phosphorus and manganese, and V means 1, m has the value of 0.5-75, a - from 0 to 25, d - from 0 to 25, x is determined by the degree of oxidation of the cations present. The method can also be effected in the presence of insignificant amount of a compound containing halogen, preferably included in the following formula: R - X or X2 where R means hydrogen, C1-C20 alkyl and X means fluorine, chlorine, bromine, iodine or their mixtures. 12 claims