公开(公告)号：CA2174654A1

公开(公告)日：1995-04-27

申请号：CA2174654

申请日：1994-10-11

Applicant: BASF AG

Inventor： TENTEN ANDREAS ,  HAMMON ULRICH ,  WEIDLICH PETER

IPC: B01J23/00 ,  B01J23/28 ,  B01J23/88 ,  B01J23/887 ,  B01J23/888 ,  B01J37/00 ,  B01J37/02 ,  B01J37/08 ,  C07B33/00 ,  C07B35/04 ,  C07C51/25 ,  C07C57/04 ,  C07C57/055 ,  C07C253/26

Abstract: Proposed is a method of producing catalytically active multi-metal oxide compositions containing Mo and V, the method calling for a catalyst precursor compound to be calcined at a temperature of 300 to 450 ~C in an atmosphere consisting of inert gases and/or steam plus 0.5 to 4 % by vol. of O2 and, averaged over the calcination time, 1 to 8 % by vol. of NH3.