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    132.
    发明专利
    未知

    公开(公告)号：DE50307562D1

    公开(公告)日：2007-08-09

    申请号：DE50307562

    申请日：2003-02-28

    Applicant: BASF AG

    Inventor： FISCHER ROLF-HARTMUTH ,  ROESCH MARKUS ,  BOTTKE NILS ,  WECK ALEXANDER ,  WINDECKER GUNTHER ,  HESSE MICHAEL ,  BORCHERT HOLGER ,  SCHLITTER STEPHAN

    IPC: C07D207/26 ,  B01J23/72 ,  B01J23/80 ,  C07B61/00 ,  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.

    PROCEDIMIENTO PARA LA PURIFICACION POR DESTILACION DE TETRAHIDROFURANO.
    135.
    发明专利
    PROCEDIMIENTO PARA LA PURIFICACION POR DESTILACION DE TETRAHIDROFURANO. 未知

    公开(公告)号：ES2246044T3

    公开(公告)日：2006-02-01

    申请号：ES03709732

    申请日：2003-02-28

    Applicant: BASF AG

    Inventor： WINDECKER GUNTHER ,  WECK ALEXANDER ,  FISCHER ROLF-HARTMUTH ,  ROSCH MARKUS ,  BOTTKE NILS ,  HESSE MICHAEL

    IPC: B01D3/14 ,  C07D307/08

    Abstract: Procedimiento para la purificación por destilación de tetrahidrofurano en bruto, que contiene agua, en el cual se conduce el tetrahidrofurano en bruto a través de tres columnas de destilación, se retira agua a partir de la cola de la primera columna, el tetrahidrofurano, que contiene agua, se recicla desde la cabeza de la segunda columna hasta la primera columna, se conduce una descarga lateral desde la primera columna hasta la segunda columna, el producto de cola de la tercera columna se recicla hasta la primera columna, retirándose por la cabeza de la primera columna un destilado, caracterizado porque se conduce una descarga lateral desde la segunda columna hasta la tercera columna y el tetrahidrofurano puro se obtiene como producto de cabeza de la tercera columna. Sigue una hoja de dibujos.

    136.
    发明专利
    未知

    公开(公告)号：DE50202060D1

    公开(公告)日：2005-02-24

    申请号：DE50202060

    申请日：2002-07-03

    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).

    Maleic anhydride production by VPO-catalyzed gas-phase oxidation of n- butane involves setting the n-butane and oxygen content levels in a pressure- controlled feed to reduce risk of explosions
    137.
    发明专利
    Maleic anhydride production by VPO-catalyzed gas-phase oxidation of n- butane involves setting the n-butane and oxygen content levels in a pressure- controlled feed to reduce risk of explosions 未知

    公开(公告)号：DE10334582A1

    公开(公告)日：2005-02-24

    申请号：DE10334582

    申请日：2003-07-28

    Applicant: BASF AG

    Inventor： DUDA MARK ,  MACHHAMMER OTTO ,  WECK ALEXANDER

    IPC: C07C51/215 ,  C07D307/60

    Abstract: Maleic anhydride production by gas-phase oxidation of n-butane with oxygen-containing gases on a heterogeneous vanadium-, phosphorus- and oxygen-containing (VPO) catalyst at 350-500[deg]C with recycling of unconverted n-butane is such that (a) the stream entering the reactor has n-butane and O 2 concentrations of 0.5-1.5 and 5-21 volume % respectively; (b) pressure at the inlet is 0.4-2 MPa abs.; and (c) 40-100% of the n-butane is converted. Maleic anhydride (MA) production by gas- phase oxidation of n-butane with oxygen-containing gases on a heterogeneous vanadium-, phosphorus- and oxygen-containing (VPO) catalyst at 350-500[deg]C with MA separation by forming a gas stream containing unconverted n-butane and water and recycling part of the n-butane to the reactor unit is such that (a) the stream entering the reactor has n-butane and oxygen concentrations of 0.5-1.5 and 5-21 volume % respectively; (b) the pressure at the inlet is 0.4-2 MPa abs.; and (c) 40-100% of the n-butane is converted.

    139.
    发明专利
    未知

    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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