Patent ID: 6531638
Filing Date: 2003-03-11
Classification: B01J,C07C

Abstract:
A process for preparing a catalytic system wherein the catalytic system consists of:a vanadium oxide; a bismuth oxide; and a carrier consisting of magnesium oxide, wherein the vanadium, expressed as V2O5, is in a quantity ranging from 2 to 35% by weight, the bismuth, expressed as Bi2O3, ranges from 2 to 40% by weight, the complement to 100 being the carrier, comprising: preparing solutions based on derivatives of the components of the catalytic system; mixing the prepared solutions and optionally aging; drying the solution to obtain a solid; first heating the solid in the presence of air from room temperature to a temperature of between 290 and 310Â° C., for a time ranging from 1 to 3 hours; additionally heating the solid in the presence of air for a time ranging from 2 to 4 hours from the temperature reached in the first heating to a calcination temperature ranging from 600 to 850Â° C.; calcining the solid in the presence of air at a constant temperature, ranging from 600 to 850Â° C., reached in the additional heating, for a time ranging from 8 to 16 hours.