Patent ID: 6281384
Filing Date: 2001-08-28
Classification: C07C

Abstract:
A process for the oxidation of propylene to acrylic acid comprising the steps of:(a) contacting a feed gas comprising (i) from 1 to 100 mol % propylene, (ii) from 0 to 20 mol % oxygen, (iii) from 0 to 70 mol % water, and (vi) the remainder inert gas with an effective amount of an oxidant mixture comprising a particulate molybdenum vanadate multimetal oxide in an oxidized state and a bismuth molybdate multimetal oxide in an oxidized state at a temperature from 250 to 450.degree. C. and for a time sufficient to convert a portion of said propylene to acrylic acid, wherein the relative amount of said molybdenum vanadate multimetal oxide is from 5 to 50 percent by weight total active ingredients and the remainder 95 to 50 percent by weight is said bismuth molybdate multimetal oxide; and(b) recovering said acrylic acid produced in step (a).