公开(公告)号：KR810000332B1

公开(公告)日：1981-04-20

申请号：KR780000936

申请日：1978-04-03

Applicant: STANDARD OIL CO OHIO

Inventor： BREMER N ,  MILBERGER E ,  WONG E

IPC: C07D307/60

Abstract: Maleic anhydride was prepd. by oxydation of n-butane, n-butene, 1,3-butadiene or these compd.'s mixt. with O2 at 250 - 600≦̸C vapor phase in the presence of improved catalyst which was composed of oxide of Ti and P necessarily and didn't comprised Ba. Thus, titanium dioxide 19.98 g, 85.4% phosphoric acid 28.69 g, vanadium pentoxide 84.2 g and distilled water 600 ml were mixed to make slurry. This aq. slurry was refluxed for 2 hr, evapd., dried at 110≦̸C for 12 hr, calcined at 427≦̸C for 2 hr and crushed to 10 - 30 mesh to give Til.OP1.0-Ox useful catalyst.