公开(公告)号：GB941293A

公开(公告)日：1963-11-06

申请号：GB1569062

申请日：1962-04-25

Applicant: BASF AG

Inventor： NONNENMACHER HELMUT ,  ANDRUSSOW KONSTANTIN ,  APPL MAX ,  FEINAUER ANTON ,  HAUG JUERGEN ,  HELMS ALFRED ,  WIEBUSCH KLAUS

IPC: B01J23/22 ,  B01J27/198 ,  C07C51/265 ,  C07C51/31

Abstract: A catalyst including V2O5, Na2S2O7\t and K2S2O7 on a carrier having special physical properties e.g. SiO2 is used as a fluidised bed in the oxidation of naphthalene or o-xylene to phthalic anhydride. Examples describe the formation also of maleic anhydride and naphthaquinone as by-products. The reaction is carried out at 250-420 DEG C.ALSO:In a process for the production of phthalic anhydride from o-xylene or from naphthalene by oxidation with gases containing oxygen in molecular form, at a temperature of 250 DEG C.-420 DEG C. by the use of V2O5-alkali pyrosulphate catalysts on carrier material in a fluidized bed there is used a catalyst which comprises V2 O5, Na2 S2 O7 and K2 S2 O7, the melting point of the mixture being lower than that of K2 S2 O7, and a highly porous carrier material, especially silica gel, aluminium phosphate, synthetic or natural silicates and active carbon, having an inner surface of 200-400 sq. metres/gm. and a grain size of 10-3000 microns, the active substance being contained in the pores of the carrier in fused form under the reaction conditions. Optional catalyst constituents include H2 MoO4, P2 O5 and H2 Wo4. Examples are given.

公开(公告)号：GB1148108A

公开(公告)日：1969-04-10

申请号：GB3491666

申请日：1966-08-04

Applicant: BASF AG

Inventor： NONNENMACHER HELMUT ,  HAUG JUERGEN

IPC: C07C5/48

Abstract: 1,148,108. Styrene. BADISCHE ANILIN- & SODA-FABRIK A.G. 4 Aug., 1966, No. 34916/66. Heading C5E. Styrene is produced by dehydrogenating ethyl benzene with oxygen at 350-600‹ C. in the presence of steam and in contact with a fluidized bed of a catalyst containing chromium oxide and an alkali metal oxide, the amount of alkali metal oxide being 1-50 wt. per cent based on the chromium oxide. The catalyst may be supported, e.g. on natural or synthetic silicates, aluminosilicates, pumice, magnesium silicate, bleaching earth, silica, titania or alumina.