公开(公告)号：AU2003212334A1

公开(公告)日：2003-09-29

申请号：AU2003212334

申请日：2003-03-12

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  DUDA MARK ,  DOBNER CORNELIA

IPC: B01J27/198 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  C07C51/215 ,  C07C57/145

公开(公告)号：AU5036201A

公开(公告)日：2001-09-24

申请号：AU5036201

申请日：2001-03-06

Applicant: BASF AG

Inventor： WEIGUNY JENS ,  STORCK SEBASTIAN ,  TENTEN ANDREAS

IPC: C07D307/60 ,  B01J27/198 ,  B01J35/00 ,  B01J35/02 ,  C07B61/00 ,  C07C51/215 ,  C07C51/25 ,  C07C57/145

Abstract: A catalyst used in a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms by means of oxygen-containing gases comprises a catalytically active composition comprising vanadium, phosphorus and oxygen and has a essentially hollow cylindrical structure in which (a) the ratio of the height h to the diameter of the continuous hole d2 is not more than 1.5 and (b) the ratio of the geometric surface area Ageo to the geometric volume Vgeo is at least 2 mm-1.