Patent ID: 7214822
Filing Date: 2007-05-08
Classification: C07C,Y10S

Abstract:
1. A process for the gas-phase catalytic oxidation of propane to acrylic acid comprising contacting a gaseous mixture comprising propane and oxygen with a catalyst to hetrogeneously catalyze the oxidation of propane to acrylic acid, wherein the catalyst used is a coated catalyst comprising a support body and a catalytically active oxide composition of the formula I where M M b=0.01 to 1, c=0.01 to 1, d=0.01 to 1 and n=a number required to achieve electrical neutrality and determined by the valence and abundance of the elements other than oxygen in (I), applied as a layer on the surface of the support body, wherein the longitudinal dimension of the support body is from 1 to 10 mm and the thickness of the active oxide composition layer present on the coated catalyst is from 10 to 700 μm.