Patent ID: 7498463
Filing Date: 2009-03-03
Classification: B01J,C07C,Y02P

Abstract:
1. A process for producing acrylic acid or methacrylic acid, which comprises reacting propane or isobutane with molecular oxygen in the gaseous phase in the presence of an oxide catalyst, said oxide catalyst comprising a composition represented by the following formula (I): wherein: Z is at least one element selected from the group consisting of tungsten, chromium, titanium, aluminum, tantalum, zirconium, hafnium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, zinc, boron, indium, germanium, tin, lead, bismuth, yttrium, gallium, rare earth elements and alkaline earth metals; and a, b, c, d, and n are, respectively, the atomic ratios of vanadium (V), antimony (Sb), niobium (Nb), Z and oxygen (O), relative to molybdenum (Mo),