公开(公告)号：DE50103810D1

公开(公告)日：2004-10-28

申请号：DE50103810

申请日：2001-12-07

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  STEIN FRANK ,  PINKOS ROLF ,  HESSE MICHAEL ,  SPRAGUE JOLYON ,  ROESCH MARKUS ,  BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/80 ,  C07C27/06 ,  C07D307/08

Abstract: Unsubstituted or alkyl-substituted THF is obtained by catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or their derivatives using a catalyst comprising 20% by weight, preferably >30% by weight, in particular from 35 to 90% by weight, of an oxidic support having acid centers, at a hot spot temperature of from 240 to 310° C., preferably from 240 to 280° C., and a WHSV over the catalyst of from 0.01 to 1.0, preferably from 0.02 to 1, in particular from 0.05 to 0.5, kg of starting material/l of catalystxhour.

公开(公告)号：AT276986T

公开(公告)日：2004-10-15

申请号：AT01985854

申请日：2001-12-07

Applicant: BASF AG

Inventor： FISCHER ROLF-HARTMUTH ,  STEIN FRANK ,  PINKOS ROLF ,  HESSE MICHAEL ,  SPRAGUE MICHAEL JOLYON ,  ROESCH MARKUS ,  BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/80 ,  C07C27/06 ,  C07D307/08

Abstract: Unsubstituted or alkyl-substituted THF is obtained by catalytic hydrogenation in the gas phase of C4-dicarboxylic acids and/or their derivatives using a catalyst comprising 20% by weight, preferably >30% by weight, in particular from 35 to 90% by weight, of an oxidic support having acid centers, at a hot spot temperature of from 240 to 310° C., preferably from 240 to 280° C., and a WHSV over the catalyst of from 0.01 to 1.0, preferably from 0.02 to 1, in particular from 0.05 to 0.5, kg of starting material/l of catalystxhour.

公开(公告)号：DE59906011D1

公开(公告)日：2003-07-24

申请号：DE59906011

申请日：1999-04-21

Applicant: BASF AG

Inventor： FISCHER ROLF ,  KAIBEL GERD ,  PINKOS ROLF ,  RAHN RALF-THOMAS

IPC: C07B61/00 ,  C07C29/136 ,  C07C29/149 ,  C07C29/88 ,  C07C31/20 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: In a process for preparing 1,4-butanediol, tetrahydrofuran and gamma-butyrolactone by oxidation of butane to give a product stream comprising maleic anhydride, absorption of maleic anhydride from the product stream using a high-boiling alcohol to give a liquid absorption product comprising monoesters and diesters of maleic acid and also high-boiling alcohol, after-esterification of the liquid absorption product and subsequent hydrogenation of the after-esterified product in the liquid phase, the high-boiling alcohol is a polyhydric alcohol having a boiling point at atmospheric pressure of above 233° C. and the after-esterified product has an acid number of less than 30 mg KOH/g and a water content of less than 1% by weight.

公开(公告)号：DE10061557A1

公开(公告)日：2002-06-13

申请号：DE10061557

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 ,  KAIBEL GERD

IPC: C07B61/00 ,  C07D307/08 ,  C07D307/33 ,  C07B41/00

Abstract: The invention relates to a method for the gas phase hydrogenation of C4 dicarboxylic acids and/or derivatives thereof to give optionally substituted gamma -butyrolactone and/or tetrahydrofuran on a catalyst, based on copper oxide, comprising a first reaction zone, in which the C4 dicarboxylic acid and/or derivatives thereof react to give a mixture mainly containing optionally substituted gamma -butyrolactone and a second zone connected thereto in which the optionally substituted gamma -butyrolactone contained in the mixture from the first hydrogenation stage is reacted to give optionally substituted tetrahydrofuran at a temperature which is lower than the temperature in the first hydrogenation step.

公开(公告)号：DE19824534A1

公开(公告)日：1999-12-09

申请号：DE19824534

申请日：1998-06-03

Applicant: BASF AG

Inventor： BRUNNER MELANIE ,  RAHN RALF-THOMAS ,  RHEUDE UDO ,  HENKELMANN JOCHEM

IPC: C07D307/33 ,  C07D307/32 ,  C07D315/00

Abstract: A method for producing butyrolactones of general formula (I), wherein the substituents R and R stand for hydrogen, alkyl, aryl hydroxyalkyl or optionally substituted aryl and trialkylsilyl groups, by reacting alkynes of general formula (II) R -CC-R , wherein R and R have the above-mentioned meaning, with carbon monoxide and water in the presence of a rhodium catalyst at pressures ranging from 20 to 300 bars and by hydrogenation of intermediately formed and as yet non-hydrogenated 2(5H) furanones. According to the inventive method a) the reaction carbonylation mixture is reacted with hydrogen at temperatures of 150-250 DEG C and at pressures ranging between 100 and 300 bars, b) the precipitated catalyst is separated and returned to the cabonylation reaction and c) butyrolactone is obtained from the de-catalysed reaction mixture by means of distillation.

公开(公告)号：CA2329477A1

公开(公告)日：1999-11-04

申请号：CA2329477

申请日：1999-04-16

Applicant: BASF AG

Inventor： FISCHER ROLF ,  KAIBEL GERD ,  PINKOS ROLF ,  RAHN RALF-THOMAS

IPC: C07C29/149 ,  C07C29/17 ,  C07C31/20 ,  C07C51/16 ,  C07C67/03 ,  C07C67/08 ,  C07C69/60 ,  C07D307/08 ,  C07D307/32 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a method for producing 1,4-butanediol and possibly .gamma.-butyrolactone and tetrahydrofurane by oxidation of butane or benzol into a product flow containing maleic anhydride, absorption of maleic anhydride from the product flow by means of an inert, high-boiling solvent in an absorption stage, which yields a liquid absorption product, and esterification of said liquid absorption product with a C1-C5 esterification alcohol in an esterification step, yielding an esterification product containing the corresponding diester and high-boiling inert solvent. This is followed by hydrogenation of the esterification product, which results in an hydrogenation product containing the products 1,4-butanediol and optionally .gamma.-butyrolactone and tetrahydrofurane as well as the esterification alcohol. The hydrogenation product is separated by distillation into the products and the esterification alcohol and the esterification alcohol is returned to the esterification zone. Prior to hydrogenation the esterification product is separated by distillation under reduced pressured into the diester and the inert solvent, the inert solvent is returned to the absorption stage and the diester is hydrogenated in the liquid phase on a fixed-bed catalyst.

公开(公告)号：DE50103263D1

公开(公告)日：2004-09-16

申请号：DE50103263

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.

公开(公告)号：MXPA03009427A

公开(公告)日：2004-02-12

申请号：MXPA03009427

申请日：2002-04-22

Applicant: BASF AG

Inventor： RAHN RALF-THOMAS

IPC: C07D307/60 ,  C07C51/215 ,  C07C51/44 ,  C07C51/573 ,  C07C57/145 ,  C07C57/15

公开(公告)号：DE10119737A1

公开(公告)日：2002-10-24

申请号：DE10119737

申请日：2001-04-23

Applicant: BASF AG

Inventor： RAHN RALF-THOMAS ,  WECK ALEXANDER ,  KAIBEL GERD

IPC: C07D307/60 ,  C07C51/215 ,  C07C51/44 ,  C07C51/573 ,  C07C57/145 ,  C07C57/15 ,  C07B63/00 ,  B01D3/00

Abstract: Purification of an organic solvent used for the absorption of maleic acid anhydride from a gaseous mixture Purification of an organic solvent used for the absorption of maleic acid anhydride from a gaseous mixture, comprises: (i) separating the maleic acid anhydride from the solvent; (ii) taking a side stream from the solvent stream; (iii) distilling and recycling to the solvent loop; and (iv) separating a low boiling fraction and a high boiling fraction from essentially pure solvent which is recycled.

公开(公告)号：DE10061553A1

公开(公告)日：2002-06-13

申请号：DE10061553

申请日：2000-12-11

Applicant: BASF AG

Inventor： BORCHERT HOLGER ,  SCHLITTER STEPHAN ,  ROESCH MARKUS ,  FISCHER ROLF-HARTMUTH ,  RAHN RALF-THOMAS ,  WECK ALEXANDER

IPC: B01J23/72 ,  B01J23/76 ,  B01J23/80 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  C07B61/00 ,  C07D307/08 ,  C07D307/33 ,  C07D315/00

Abstract: The invention relates to a hydrogenation catalyst, particularly suitable for the hydrogenation of maleic anhydride and derivatives thereof to give THF or derivatives thereof. Said hydrogenation catalyst comprises copper oxide and at least one further metal, or a compound thereof, from the group comprising Al, Si, Zn, La, Ce, elements of groups IIIA to VIIIA and groups IA and IIA, with a pore volume of >/= 0.01 ml/g for pore diameters > 50nm and a ratio of pore volume for macropores with a diameter > 50nm to the total pore volume for pores with a diameter > 4 nm of > 10 %.