| 摘要 |
Process for preparing catalytic systems consisting of:a vanadium oxide;a bismuth oxide;and a carrier consisting of magnesium oxide, comprising:preparing of solutions based on derivatives of the components of the catalytic system;mixing the solutions and optional aging;drying the solution;first heating, in the presence of air, of the solid obtained from the drying at a temperature ranging from room value to a temperature of between 290 and 310° C., for a time ranging from 1 to 3 hours;additional heating, in the presence of air, of the solid for a time ranging from 2 to 4 hours at the calcination temperature ranging from 600 to 850° C.;calcination, in the presence of air, of the solid at a constant temperature, ranging from 600 to 850° C., reached in the additional heating, for a time ranging from 8 to 16 hours.
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