A method for the catalytic gas-phase oxidation of toluene to benzaldehyde and oxygen or ozone benzoesaeure

摘要

1,164,316. Oxidation catalysts. STAMICARBON N.V. 4 Nov., 1966 [12 Nov., 1965], No. 49631/66. Heading B1E. [Also in Division C2] Oxidation catalysts comprise silver vanadate and one or more cerite earth vanadates supported on a carrier. Specified carriers are Al 2 O 3 and/or SiO 2 . Examples describe the preparation of AgVO 3 with Ce(VO 3 ) 3 , Di*(VO 3 ) 3 , La(VO 3 ) 3 or SiO 2 [Di=Didyanum]. The catalysts may be calcined at 450‹C.