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公开(公告)号:AT273292T
公开(公告)日:2004-08-15
申请号:AT01984809
申请日:2001-12-07
Applicant: BASF AG
Inventor: BORCHERT HOLGER , SCHLITTER STEPHAN , FISCHER ROLF-HARTMUTH , ROESCH MARKUS , STEIN FRANK , RAHN RALF-THOMAS , WECK ALEXANDER , KAIBEL GERD
IPC: C07B61/00 , C07D307/08 , C07D307/33
Abstract: The present invention relates to a process for the gas-phase hydrogenation of C4-dicarboxylic acids and/or their derivatives over a catalyst based on copper oxide to give substituted or unsubstituted gamma-butyrolactone and/or tetrahydrofuran, which comprises, which a first reaction zone in which the C4-dicarboxylic acid and/or its derivatives is/are reacted to give a mixture comprising a substituted or unsubstituted gamma-butyrolactone as main product and a subsequent second reaction zone in which the substituted or unsubstituted gamma-butyrolactone present in the mixture from the first hydrogenation step is reacted at a temperature lower than the temperature in the first hydrogenation step to give substituted or unsubstituted tetrahydrofuran.
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公开(公告)号:DE10225927A1
公开(公告)日:2003-12-24
申请号:DE10225927
申请日:2002-06-11
Applicant: BASF AG
Inventor: HESSE MICHAEL , SCHLITTER STEPHAN , BORCHERT HOLGER , SCHUBERT MARKUS , ROESCH MARKUS , BOTTKE NILS , FISCHER ROLF-HARTMUTH , WECK ALEXANDER , WINDECKER GUNTHER , HEYDRICH GUNNAR
IPC: B01J23/80 , C07B61/00 , C07C29/149 , C07C31/20 , C07C29/132 , C07D307/20 , C07D307/32
Abstract: The present invention relates to a process for preparing optionally alkyl-substituted 1,4-butanediol by two-stage catalytic hydrogenation in the gas phase of C 4 -dicarboxylic acids and/or of derivatives thereof having the following steps: a) introducing a gas stream of a C 4 -dicarboxylic acid or of a derivative thereof at from 200 to 300° C. and from 2 to 60 bar into a first reactor and catalytically hydrogenating it to a product which contains mainly optionally alkyl-substituted gamma-butyrolactone; b) converting the product stream into the liquid phase; c) introducing the product stream obtained in this way into a second reactor at a temperature of from 100° C. to 240° C. and a pressure of from 20 to 250 bar and catalytically hydrogenating it in the liquid phase to optionally alkyl-substituted 1,4-butanediol; d) removing the desired product from by-products and any unconverted reactants; e) optionally recycling unconverted intermediates into one or both hydrogenation stages, said hydrogenation stages both using a catalyst which comprises =5% by weight, preferably from 5 to 95% by weight, in particular from 20 to 90% by weight, of a support, said second reactor having a higher pressure than said first reactor, and the product mixture removed from said first reactor being introduced without further purification into said second reactor.
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公开(公告)号:DE10133054A1
公开(公告)日:2003-01-16
申请号:DE10133054
申请日:2001-07-07
Applicant: BASF AG
Inventor: SCHLITTER STEPHAN , BORCHERT HOLGER , HESSE MICHAEL , SCHUBERT MARKUS , BOTTKE NILS , FISCHER ROLF-HARTMUTH , ROESCH MARKUS , HEYDRICH GUNNAR , WECK ALEXANDER
IPC: B01J23/89 , B01J37/02 , B01J37/03 , C07D307/08 , C07D307/33 , C07D315/00
Abstract: A catalyst (I) for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride, comprises copper oxide (20-94 wt.%), palladium and/or a palladium compound (0.005-5 wt.%) and an oxide support (2-79.995 wt.%) comprising oxides of Al, Si, Zn, La, Ce, Group IIIa-VIIIa elements and/or Group IA and II elements. Independent claims are also included for: (i) a process for the production of the catalyst (I) by impregnation of an oxide supported copper oxide catalyst with a solution of a soluble palladium compound, drying and optionally calcining; and (ii) a process for the gas phase hydrogenation of 4C-dicarboxylic acids and/or derivatives, preferably maleic acid anhydride in the presence of the catalyst (I).
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公开(公告)号:DE10064301A1
公开(公告)日:2002-07-04
申请号:DE10064301
申请日:2000-12-22
Applicant: BASF AG
Inventor: HESSE MICHAEL , BORCHERT HOLGER , SCHLITTER STEPHAN
IPC: B01J23/66 , C07D301/10 , B01J27/138 , B01J27/18 , B01J27/232
Abstract: The invention relates to a catalyst containing silver, an alkaline-earth metal compound and a promoter consisting of a mixture of at least two compounds, said mixture containing at least one potassium compound and having a melting point below 340 DEG C. The invention also relates to a method for producing the inventive catalyst and the use of the same for the epoxidation of alkenes, especially propene.
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公开(公告)号:DE10061555A1
公开(公告)日:2002-06-20
申请号:DE10061555
申请日:2000-12-11
Applicant: BASF AG
Inventor: BORCHERT HOLGER , SCHLITTER STEPHAN , FISCHER ROLF-HARTMUTH , ROESCH MARKUS , STEIN FRANK , RAHN RALF-THOMAS , WECK ALEXANDER
IPC: B01J23/72 , B01J23/76 , B01J23/80 , B01J23/89 , B01J37/02 , C07B61/00 , C07D307/08 , C07D307/33 , C07D315/00
Abstract: The invention relates to a catalyst for the hydrogenation of C4 dicarboxylic acids and/or derivatives thereof, preferably maleic anhydride, in the gas phase, characterised in that said catalyst comprises 5 to 100 wt %, preferably 40 to 90 wt % copper oxide and 0 to 95 wt %, preferably 10 to 60 wt % of one or more metals, or compounds thereof, from the group comprising Al, Si, Zn, Pd, La, Ce, elements of groups III A to VIII A and of groups I A and II A as active mass and said mass is deposited on an inert support in the form of a thin layer.
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公开(公告)号:DE10061558A1
公开(公告)日:2002-06-13
申请号:DE10061558
申请日:2000-12-11
Applicant: BASF AG
Inventor: BORCHERT HOLGER , SCHLITTER STEPHAN , HESSE MICHAEL , STEIN FRANK , FISCHER ROLF-HARTMUTH , RAHN RALF-THOMAS , WECK ALEXANDER , ROESCH MARKUS
IPC: C07B61/00 , C07C51/36 , C07C55/10 , C07D307/08 , C07D307/33 , C07B41/00
Abstract: The invention relates to a method for the hydrogenation of C4-dicarboxylic acids or derivatives thereof in the gas phase. The method is carried out in a fluid bed reactor. Known catalytic compositions may be applied.
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公开(公告)号:DE10025366A1
公开(公告)日:2001-11-29
申请号:DE10025366
申请日:2000-05-23
Applicant: BASF AG
Inventor: DOCKNER TONI , HESSE MICHAEL , BORCHERT HOLGER
IPC: B01J23/66 , B01J27/232 , C07D301/10 , C07D303/04
Abstract: A catalyst (I) containing silver, alkaline earth carbonate and aluminum oxide contains potassium hydroxide. Independent claims are included for (i) a process for the production of the catalyst (I) by application of silver, alkaline earth carbonate and potassium hydroxide onto an aluminum oxide support. (ii) a process for the epoxidation of propene by reaction of propene, an oxygen containing gas, and a halogen or halogen compound in the presence of the catalyst (I).
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公开(公告)号:DE10213968A1
公开(公告)日:2003-10-30
申请号:DE10213968
申请日:2002-03-28
Applicant: BASF AG
Inventor: ASPRION NORBERT , GROSMANN CHRISTOPH , HOELEMANN KARL , THEIS GERHARD , WAHL PETER , HEFNER WERNER , BORCHERT HOLGER
IPC: C07D301/32 , C07D301/08 , C07D303/04
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公开(公告)号:AU2003227027A1
公开(公告)日:2003-09-16
申请号:AU2003227027
申请日:2003-02-28
Applicant: BASF AG
Inventor: FISCHER ROLF-HARTMUTH , ROSCH MARKUS , BOTTKE NILS , WECK ALEXANDER , WINDECKER GUNTHER , HESSE MICHAEL , BORCHERT HOLGER , SCHLITTER STEPHAN
IPC: B01J23/72 , B01J23/80 , C07B61/00 , C07D207/26 , C07D207/267 , C07D307/08
Abstract: A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C 4 -dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones comprises a) hydrogenating C 4 -dicarboxylic acids and/or derivatives thereof in the gas phase at from 200 to 300° C., from 0.1 to 100 bar, catalyst hourly space velocities of from 0.01 to 1 kg of reactant/l of catalyst*hour and reactant/hydrogen molar ratios of from 20 to 800 in the presence of catalysts comprising copper, aluminum and/or zinc to give mixtures of THF and GBL, b) separating the hydrogenation effluent obtained by distillation into a THF/water mixture as the top product and a GBL-containing bottom product, c) separating the THF/water mixture from step b) in a distillation facility consisting of three columns by withdrawing water from the bottom of the first column, recycling water-containing THF from the second into the first column, passing a side stream of the first into the second column, recycling the bottom product of the third column into the first column and withdrawing a distillate at the top of the first column, wherein a side stream of the second column is passed into the third column and the pure THF is obtained as the top product of the third column, d) recovering GBL from the GBL-containing bottom product from step b) by distillation and e) reacting the GBL obtained with ammonia or amines to give corresponding pyrrolidones.
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公开(公告)号:DE10209632A1
公开(公告)日:2003-09-11
申请号:DE10209632
申请日:2002-03-02
Applicant: BASF AG
Inventor: WINDECKER GUNTHER , WECK ALEXANDER , FISCHER ROLF-HARTMUTH , ROESCH MARKUS , BOTTKE NILS , HESSE MICHAEL , SCHLITTER STEPHAN , BORCHERT HOLGER
IPC: B01D3/14 , C07D307/08 , C07D307/04 , C08G65/20 , C07C27/28
Abstract: Crude water-containing tetrahydrofuran is purified by passing the crude tetrahydrofuran through three distillation columns, withdrawing water from the bottom of the first column, recycling water-containing tetrahydrofuran from the top of the second column into the first column, passing a sidestream of the first column into the second column, recycling the bottom product of the third column into the first column, and withdrawing a distillate at the top of the first column. Additionally, a sidestream of the second column is passed into the third column and the purified tetrahydrofuran is recovered as the top product of the third column.
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