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公开(公告)号:DE102004024688A1
公开(公告)日:2005-12-15
申请号:DE102004024688
申请日:2004-05-19
Applicant: BASF AG
Inventor: MEENEN JOHANNES , HOELEMANN KARL , KAIBEL GERD
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公开(公告)号:IN534CH2003A
公开(公告)日:2005-04-15
申请号:IN534CH2003
申请日:2003-04-11
Applicant: BASF AG
Inventor: BOETTCHER ARND , HENKELMANN JOCHEM , HAAKE MATHIAS , KAIBEL GERD
IPC: B01J23/40 , B01J23/46 , B01J23/56 , B01J35/04 , B01J37/02 , C07B35/02 , C07B61/00 , C07C5/10 , C07C13/18 , C07C209/72 , C07C211/35
Abstract: A process for the hydrogenation of a monocyclic or polycyclic aromatic which may be unsubstituted or substituted by at least one aikyi group comprises bringing the aromatic into contact with a hydrogen-containing gas in the presence of a catalyst comprising at least one metal of transition group VIII of the Periodic Table as active metal applied to a structured or monolithic support.
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273.
公开(公告)号:ES2223916T3
公开(公告)日:2005-03-01
申请号:ES01969739
申请日:2001-09-19
Applicant: BASF AG
Inventor: KAIBEL GERD , OOST CARSTEN , STROEZEL MANFRED , MEYER GERALD , TRIBENBACH PETER , SARTOR KARL-HEINZ
Abstract: Procedimiento para la separación por destilación de fracciones con 5+ átomos de carbono en una fracción de punto de ebullición bajo (A), una fracción de punto de ebullición medio (B) y una fracción de punto de ebullición alto (C) en una o varias columnas con pared separadora (TK), en la que (o en las que) se ha dispuesto una pared separadora (T) en la dirección longitudinal de la columna con formación de una zona superior, conjunta, de la columna (1), una zona inferior, conjunta, de la columna (6), una sección de alimentación (2, 4) con sección de enriquecimiento (2) y sección de agotamiento (4) así como una sección de descarga (3, 5) con sección de enriquecimiento (5) y con sección de agotamiento (3), con alimentación de la fracción con 5+ átomos de carbono (A, B, C) en la zona central de la sección de alimentación (2, 4), con descarga de la fracción de elevado punto de ebullición (C) a partir de la cola de la columna, de la fracción con bajo punto de ebullición (A) a través de la cabeza de la columna y de la fracción con punto de ebullición medio (B) a partir de la zona central de la sección de descarga (3, 5), caracterizado porque la relación de reparto del reciclo líquido en el extremo superior de la pared separadora (T) se ajusta de tal manera, que la parte de componentes clave de elevado punto de ebullición en el reciclo líquido sobre la sección de agotamiento (3) de la sección de descarga del extremo superior de la pared separadora (T) sea desde un 10 hasta un 80%, preferentemente desde un 30 hasta un 50% del valor límite admisible en la fracción de punto de ebullición medio (B) y porque la potencia calorífica en el evaporador de cola de la columna con pared separadora (TK) se regula de tal manera, que la concentración de los componentes clave de bajo punto de ebullición en el líquido en el extremo inferior de la pared separadora (T) sea desde un 10 hasta un 80%, preferentemente desde un 30 hasta un 50% del valor límite admisible en la fracción de punto de ebullición medio (B).
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公开(公告)号:BR0214543A
公开(公告)日:2004-11-03
申请号:BR0214543
申请日:2002-12-06
Applicant: BASF AG
Inventor: SIRCH TILMAN , KAIBEL GERD , WARTINI ALEXANDER , DERNBACH MATTHIAS
IPC: C07C29/38 , C07B61/00 , C07C29/141 , C07C29/80 , C07C31/22
Abstract: Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.
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公开(公告)号:ES2215610T3
公开(公告)日:2004-10-16
申请号:ES00906367
申请日:2000-02-22
Applicant: BASF AG
Inventor: MAAS-BRUNNER MELANIE , HENKELMANN JOCHEM , KAIBEL GERD , KINDLER ALOIS DR , KNOLL CHRISTIAN , RUST HARALD
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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:DE50005197D1
公开(公告)日:2004-03-11
申请号:DE50005197
申请日:2000-02-22
Applicant: BASF AG
Inventor: BRUNNER MELANIE , HENKELMANN JOCHEM , KAIBEL GERD , KINDLER DR , KNOLL CHRISTIAN , RUST HARALD , TRAGUT CHRISTIAN
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公开(公告)号:BR0110721A
公开(公告)日:2004-02-10
申请号:BR0110721
申请日:2001-05-09
Applicant: BASF AG
Inventor: MEYER GERALD , KAIBEL GERD , BOHNER GERD , KINDLER KLAUS , ADRIAN TILL , PICKENOCKER KARIN , PAHL MELANIE , HILL THOMAS
IPC: C07C7/08 , B01D3/14 , B01D3/40 , C07C5/09 , C07C7/00 , C07C11/167 , C10G7/08 , C10G70/00 , C10G70/02 , C07C7/163
Abstract: In a process for the work-up of a C4 fraction, comprising the process steps Extractive distillation (I), Selective hydrogenation over a heterogeneous catalyst (II), a crude 1,3-butadiene stream being obtained following process steps (I) and (II) and Distillation of the crude 1,3-butadiene stream for isolating pure 1,3-butadiene (III), the process steps I and II are carried out in a single column or in thermally coupled columns and the process step III is carried out in a second column.
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公开(公告)号:DE10231890A1
公开(公告)日:2004-02-05
申请号:DE10231890
申请日:2002-07-12
Applicant: BASF AG
Inventor: KAIBEL GERD , MERGER MARTIN , DOMSCHKE THOMAS , DECKERT PETRA , SAUER FRIEDRICH
IPC: C07D307/62
Abstract: The invention relates to a method for the separation of ascorbic acid from a mixture containing ascorbic acid and 2-keto-L-gulonic acid in a polar, preferably aqueous solvent, by means of liquid/liquid extraction using an amide. The method preferably also comprises steps for the back-extraction of the ascorbic acid, recycling of the extraction solvent and/or the back extraction solvent and for isolation of the ascorbic acid from the back extraction solvent. The invention further relates to a method for the production of ascorbic acid from KGA and isolation of the ascorbic acid so produced.
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公开(公告)号:CA2492269A1
公开(公告)日:2004-01-22
申请号:CA2492269
申请日:2003-07-14
Applicant: BASF AG
Inventor: MILLER CHRISTIAN , GOEBBEL HANS-GEORG , KAIBEL GERD , AQUILA WERNER , DOBLER WALTER , DIRNSTEINER THOMAS , HAHN THILO , BREUER KLAUS
Abstract: A method for the production of tetrahydrogeranylacetone is disclosed, whereb y pseudoionone, geranylacetone and/or dihydrogeranylacetone in the liquid phas e, in which particles of a catalyst, for the preferential hydrogenation of carb on- carbon double bonds before carbon-oxygen double bonds, are suspended, is fed through a device along in the presence of a gas comprising hydrogen, said device preventing the transport of the catalyst particles.
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