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公开(公告)号:AU2002319208A1
公开(公告)日:2002-12-23
申请号:AU2002319208
申请日:2002-06-10
Applicant: BASF AG
Inventor: NOBEL THOMAS
IPC: C07C27/26 , B01D1/00 , C07C29/80 , C07C29/88 , C07C35/08 , C07C45/33 , C07C45/85 , C07C49/403 , C07C31/135 , C07C45/82
Abstract: Formic acid is at least partly removed from an aqueous solution comprising formic acid, cyclohexanone and cyclohexanol by decomposition over certain decomposition catalysts. The method is preferably used for processing reaction products from the oxidation of cyclohexane and comprises: (i) extracting a product gas mixture obtained in the oxidation of cyclohexane with an aqueous scrubbing liquid, (ii) separating the aqueous solution obtained in (i) by distillation into an aqueous solution comprising formic acid, cyclohexanone and cyclohexanol together with further minor organic components and a carboxylic acid mixture (iii) removing the formic acid at least partially from the aqueous solution obtained in (ii) by decomposition, and (iv) further processing the aqueous solution obtained in (iii) to give epsilon-caprolactam, or using the aqueous solution obtained in (iii) as scrubbing liquid in (i).
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公开(公告)号:EA007065B1
公开(公告)日:2006-06-30
申请号:EA200400876
申请日:2003-01-20
Applicant: BASF AG
Inventor: BOTTKE NILS , FISCHER ROLF-HARTMUTH , NOBEL THOMAS , ROSCH MARCUS
IPC: C07C1/22 , C07C41/18 , B01J23/00 , B01J23/72 , B01J23/755 , B01J23/885 , B01J23/889 , C07B61/00 , C07C43/205
Abstract: Способполученияпроизводныхтолуолаформулы Iгде R, Rи Rнезависимодруготдругаозначаютводород, галоген, C-Салкил, гидроксилили C-Салкокси, гидрированиембензальдегидови/илибензиловыхспиртовформулы IIводородомв присутствиикатализатора, болееподробноприведенногов описании.
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公开(公告)号:ES2236542T3
公开(公告)日:2005-07-16
申请号:ES02748752
申请日:2002-06-10
Applicant: BASF AG
Inventor: NOBEL THOMAS
Abstract: Procedimiento para la eliminación por lo menos parcial de ácido fórmico de una solución acuosa que contiene ácido fórmico, ciclohexanona y ciclohexanol, en el que el ácido fórmico se descompone en un óxido metálico básico de metales de los grupos 2, 4, 5, 12 y/o 14 o en un metal noble de los grupos 8 ¿ 11 sobre un soporte oxídico como catalizador de la descomposición.
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公开(公告)号:ES2218186T3
公开(公告)日:2004-11-16
申请号:ES00949204
申请日:2000-06-21
Applicant: BASF AG
Inventor: STEIN FRANK , KRUG THOMAS , NOBEL THOMAS , RUST HARALD
IPC: C07B61/00 , C07C29/149 , C07C31/20
Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.
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公开(公告)号:AU2003283245A8
公开(公告)日:2004-04-08
申请号:AU2003283245
申请日:2003-09-16
Applicant: BASF AG
Inventor: STEIN FRANK , GALL MARTIN , NOBEL THOMAS , KRUG THOMAS
IPC: C07C29/149 , C07C31/20 , C07D313/04
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公开(公告)号:AU2003283245A1
公开(公告)日:2004-04-08
申请号:AU2003283245
申请日:2003-09-16
Applicant: BASF AG
Inventor: GALL MARTIN , STEIN FRANK , KRUG THOMAS , NOBEL THOMAS
IPC: C07C29/149 , C07C29/00
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公开(公告)号:AU6264600A
公开(公告)日:2001-01-22
申请号:AU6264600
申请日:2000-06-21
Applicant: BASF AG
Inventor: STEIN FRANK , KRUG THOMAS , NOBEL THOMAS , RUST HARALD
IPC: C07B61/00 , C07C29/149 , C07C31/20
Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.
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