	US 7,557,223 B2
	Titanium-vanadium-tin comprising catalyst and process for the preparation of phthalic anhydride
Fabrizio Cavani, Modena (Italy); Carlo Fumagalli, Albano San Alessandro (Italy); Roberto Leanza, Milan (Italy); Gianluca Mazzoni, Torre Boldone (Italy); and Barbara Panzacchi, Bologna (Italy)
Assigned to Lonza Spa, Scanzorosciate (Italy)
Appl. No. 10/517,816 PCT Filed Jun. 19, 2003, PCT No. PCT/EP03/06494 § 371(c)(1), (2), (4) Date Dec. 14, 2004, PCT Pub. No. WO04/000455, PCT Pub. Date Dec. 31, 2003.
Claims priority of application No. MI2002A1358 (IT), filed on Jun. 19, 2002.
Prior Publication US 2005/0240031 A1, Oct. 27, 2005
Int. Cl. C07D 307/77 (2006.01)

U.S. Cl. 549—240

20 Claims

1. An oxidic catalyst for the production of phthalic anhydride by oxidizing a hydrocarbon selected from the group consisting of o-xylene naphthalene, and mixtures thereof, which catalyst comprises, based on the catalytically active composition, from 2 to 15% by weight (calculated as V₂O₅) of vanadium, from 1 to 15% by weight (calculated as SnO₂) of tin, from 70 to 97% by weight (calculated as TiO₂) of titanium oxide.