公开(公告)号：JPS5077315A

公开(公告)日：1975-06-24

申请号：JP12762674

申请日：1974-11-07

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89

公开(公告)号：JPS6041072B2

公开(公告)日：1985-09-13

申请号：JP12762674

申请日：1974-11-07

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89

公开(公告)号：DE2914683A1

公开(公告)日：1980-10-16

申请号：DE2914683

申请日：1979-04-11

Applicant: BASF AG

Inventor： REUTER PETER DIPL CHEM DR ,  BLECHSCHMITT KURT ,  WIRTH FRIEDRICH DIPL CHEM DR

IPC: C07D307/89 ,  B01J21/06 ,  B01J23/22 ,  B01J35/02 ,  B01J35/04 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

公开(公告)号：DE2356049B2

公开(公告)日：1976-12-23

申请号：DE2356049

申请日：1973-11-09

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89

Abstract: Maleic anhydride is recovered by evaporating the effluent from the production of phthalic anhydride at from 40 DEG to 150 DEG C and from 50 to 760 mm to a water content of less than 10% by weight, heating the concentrate in a thin-film or falling-film evaporator at from 100 to 600 mm at from 120 DEG to 180 DEG C and distilling it in a column. The pure maleic anhydride is withdrawn laterally and the aqueous condensate is recycled to the offgas scrubber.

公开(公告)号：NL7414427A

公开(公告)日：1975-05-13

申请号：NL7414427

申请日：1974-11-05

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89

Abstract: Maleic anhydride is recovered by evaporating the effluent from the production of phthalic anhydride at from 40 DEG to 150 DEG C and from 50 to 760 mm to a water content of less than 10% by weight, heating the concentrate in a thin-film or falling-film evaporator at from 100 to 600 mm at from 120 DEG to 180 DEG C and distilling it in a column. The pure maleic anhydride is withdrawn laterally and the aqueous condensate is recycled to the offgas scrubber.

公开(公告)号：DE3207208A1

公开(公告)日：1983-09-08

申请号：DE3207208

申请日：1982-02-27

Applicant: BASF AG

Inventor： DANZ ECKEHARD DIPL CHEM DR ,  DUEMBGEN GERD DIPL CHEM DR ,  MIESEN ERNEST DIPL ING ,  SCHMIDT JOHANNES E DIPL CHEM D ,  WIRTH FRIEDRICH DIPL CHEM DR

IPC: C07D307/60 ,  C07C51/573 ,  C07D307/89

Abstract: A process for the continuous isolation of phthalic anhydride and maleic anhydride from the reaction gases obtained by catalytic oxidation of o-xylene or naphthalene with air, wherein the reaction gases are treated with a hydrocarbon of boiling range from 115 DEG to 175 DEG C. as the solvent in a column, and are then treated with an organic solvent of boiling range from 180 DEG to 290 DEG C. in a second column, the phthalic anhydride and maleic anhydride being isolated from the liquid bottom product of the first column.

公开(公告)号：DE2547624A1

公开(公告)日：1977-04-28

申请号：DE2547624

申请日：1975-10-24

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  REUTER PETER DIPL CHEM DR ,  WIRTH FRIEDRICH DIPL CHEM DR

IPC: C07D307/89 ,  B01J23/22 ,  B01J35/02 ,  B01J37/02 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: A supported catalyst for the oxidation of aromatic or unsaturated aliphatic hydrocarbons, comprising an inert nonporous carrier to which is applied a thin layer of a catalytic composition which contains from 1 to 39.9 percent by weight of vanadium pentoxide, from 60 to 98.9 percent by weight of titanium dioxide and from 0.1 to 10% by weight of rubidium and antimony in an atomic ratio Rb : Sb of from 1:2.5 to 1:30, the vanadium pentoxide content being from 0.05 to 4 percent by weight, based on the supported catalyst.

公开(公告)号：DE2546268A1

公开(公告)日：1977-04-21

申请号：DE2546268

申请日：1975-10-16

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  REUTER PETER DIPL CHEM DR ,  WIRTH FRIEDRICH DIPL CHEM DR ,  HORNBERGER PAUL DIPL CHEM DR

IPC: C07D307/89 ,  B01J23/00 ,  B01J27/00 ,  C07C51/265 ,  C07C51/31

Abstract: A process for the manufacture of phthalic anhydride by oxidizing o-xylene and/or naphthalene over a supported catalyst containing vanadium pentoxide and titanium dioxide, at from 350 DEG to 500 DEG C, in which the o-xylene or naphthalene is passed, with an oxygen-containing carrier gas, over the catalyst, and in which the catalyst in the first 25-50 per cent by volume of the total catalyst volume, in the direction of flow of the mixture of o-xylene or naphthalene and carrier gas, contains from 0.01 to 0.3 per cent by weight, based on titanium dioxide, of rubidium, but no phosphorus, in the active composition, while the remainder of the catalyst contains from 0.02 to 0.8 per cent by weight, based on titanium dioxide, of phosphorus, but no rubidium, in the active composition.

公开(公告)号：FR2250753A1

公开(公告)日：1975-06-06

申请号：FR7436560

申请日：1974-11-04

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89

Abstract: Maleic anhydride is recovered by evaporating the effluent from the production of phthalic anhydride at from 40 DEG to 150 DEG C and from 50 to 760 mm to a water content of less than 10% by weight, heating the concentrate in a thin-film or falling-film evaporator at from 100 to 600 mm at from 120 DEG to 180 DEG C and distilling it in a column. The pure maleic anhydride is withdrawn laterally and the aqueous condensate is recycled to the offgas scrubber.

公开(公告)号：BE821870A

公开(公告)日：1975-05-05

申请号：BE150224

申请日：1974-11-05

Applicant: BASF AG

Inventor： WIRTH FRIEDRICH DIPL CHEM DR ,  RENAUER ERICH DIPL CHEM DR ,  AMMON HANS VON DIPL ING ,  SCHNEIDER CURT A DIPL CHEM DR ,  SUTER HUBERT DIPL CHEM DR

IPC: C07D307/36 ,  C07C51/573 ,  C07D307/60 ,  C07D307/89 ,  C07C

Abstract: Maleic anhydride is recovered by evaporating the effluent from the production of phthalic anhydride at from 40 DEG to 150 DEG C and from 50 to 760 mm to a water content of less than 10% by weight, heating the concentrate in a thin-film or falling-film evaporator at from 100 to 600 mm at from 120 DEG to 180 DEG C and distilling it in a column. The pure maleic anhydride is withdrawn laterally and the aqueous condensate is recycled to the offgas scrubber.