Patent ID: 7282604

Claim:
A process for manufacturing acrylic acid from propane, wherein: a) a gaseous mixture devoid of molecular oxygen and comprising propane, water vapor, as well as, if appropriate, an inert gas, is introduced into a first reactor with a moving catalyst bed, b) at the outlet of the first reactor, the gases are separated from the catalyst; c) the catalyst is returned into a regenerator; d) the gases are introduced into a second reactor with a moving catalyst bed; e) at the outlet of the second reactor, the gases are separated from the catalyst and the acrylic acid contained in the separated gases is recovered; f) the catalyst is returned into the regenerator; g) the regenerated catalyst from the regenerator is reintroduced into the first and second reactors; and wherein the catalyst comprises molybdenum, vanadium, tellurium or antimony, oxygen and at least one other element X chosen from niobium, tantalum, tungsten, titanium, aluminum, zirconium, chromium, manganese, iron, ruthenium, cobalt, rhodium, nickel, palladium, platinum, antimony, bismuth, boron, indium and cerium.