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    2.
    发明专利
    未知

    公开(公告)号：DE3784146D1

    公开(公告)日：1993-03-25

    申请号：DE3784146

    申请日：1987-12-04

    Applicant: BASF AG

    Inventor： DE DECKER EMILE ,  OOSTVOGELS JOZEF ,  VAN WAUWE GERARD ,  NEUBAUER GERALD DR

    IPC: C07D201/04

    Abstract: In prepn. of caprolactam by Beckmann conversion of cyclohexanone oxime with oleum at 70-130 deg.C, in at least 1 stage, the reaction mixt. is held for 10-600 mins. at 70-110 deg.C in a post-residence zone. Conversion is at 108-118 deg.C in 2 or 3 stages, with addn. to the 1st stage of all the oleum and 60-95 pts. of cyclohexanone oxime, and addn. of 40-5 pts. of the oxime to the latter stages. The mixt. is held in the post-residence zone for 15-180 mins., at 90-100 deg.C.

    PREPARATION OF A HYDROGENATION CATALYST
    3.
    发明专利
    PREPARATION OF A HYDROGENATION CATALYST 未知

    公开(公告)号：CA2231536A1

    公开(公告)日：1997-04-10

    申请号：CA2231536

    申请日：1996-09-26

    Applicant: BASF AG

    Inventor： HEINEKE DANIEL ,  SCHNEIDER HEINZ-WALTER ,  RIEKER CHRISTOPHER WILLIAM ,  OOSTVOGELS JOZEF ,  POSTELMANS DANY ,  THOME ALFRED ,  ACHHAMMER GUENTHER

    IPC: B01J23/42 ,  B01J23/96 ,  B01J37/16 ,  B01J38/48 ,  C01B21/14

    Abstract: The invention relates to a hydrogenation catalyst by the reduction from platinum in the stage of oxidation of +4 (Pt (IV)) with a selective reducing agent in an acidic aqueous medium in the presence of a carbon-containing carrier to platinum in the stage of oxidation +2 (Pt (II)), subsequent poisoning of the platinum thus obtained with a sulphur-containing selective reducing agent, and subsequent reduction of the platinum thus partially poisoned to form metallic platinum (Pt(0)) and subsequent processing as known per se in that (a) Pt (II) is partially poisoned with a sulphur-containing selective reducing agent, wherein the sulphur-containing selective reduction agent is used in an amount which corresponds to from 15 to 70 mol % of the amount of the sulphur-containing selective reducing agent which might be needed to reduce Pt(IV) to Pt (II), provided that the amount of Pt (IV) corresponds to the amount of Pt (II) used and to be poisoned, and subsequently the partially poisoned Pt (II) is reduced with an alkali metal formate to Pt (0); or (b) platinum in the stage of oxidation of greater than +2 is partially poisoned and subsequently or simultaneously reduced with an alkali metal formate to Pt (0). The invention also relates to a hydrogenation catalyst, use of the hydrogenation catalyst for preparing hydroxylammonium salts, a process for the preparation of hydroxylammonium salts, and a process for regenerating platinum-containing hydrogenation catalysts.

    4.
    发明专利
    未知

    公开(公告)号：DE19536777C1

    公开(公告)日：1997-05-15

    申请号：DE19536777

    申请日：1995-10-04

    Applicant: BASF AG

    Inventor： HEINEKE DANIEL DR ,  RIEKER CHRISTOPHER WILLIAM ,  OOSTVOGELS JOZEF ,  POSTELMANS DANY DR ,  SCHNEIDER HEINZ-WALTER DR ,  THOME ALFRED DR ,  ACHHAMMER GUENTHER DR

    IPC: B01J23/42 ,  B01J23/96 ,  B01J37/16 ,  B01J38/48 ,  C01B21/14

    Abstract: The invention relates to a hydrogenation catalyst by the reduction from platinum in the stage of oxidation of +4 (Pt (IV)) with a selective reducing agent in an acidic aqueous medium in the presence of a carbon-containing carrier to platinum in the stage of oxidation +2 (Pt (II)), subsequent poisoning of the platinum thus obtained with a sulphur-containing selective reducing agent, and subsequent reduction of the platinum thus partially poisoned to form metallic platinum (Pt(0)) and subsequent processing as known per se in that (a) Pt (II) is partially poisoned with a sulphur-containing selective reducing agent, wherein the sulphur-containing selective reduction agent is used in an amount which corresponds to from 15 to 70 mol % of the amount of the sulphur-containing selective reducing agent which might be needed to reduce Pt(IV) to Pt (II), provided that the amount of Pt (IV) corresponds to the amount of Pt (II) used and to be poisoned, and subsequently the partially poisoned Pt (II) is reduced with an alkali metal formate to Pt (0); or (b) platinum in the stage of oxidation of greater than +2 is partially poisoned and subsequently or simultaneously reduced with an alkali metal formate to Pt (0). The invention also relates to a hydrogenation catalyst, use of the hydrogenation catalyst for preparing hydroxylammonium salts, a process for the preparation of hydroxylammonium salts, and a process for regenerating platinum-containing hydrogenation catalysts.

    PREPARACION DE UN CATALIZADOR PARA HIDROGENACION.
    6.
    发明专利
    PREPARACION DE UN CATALIZADOR PARA HIDROGENACION. 未知

    公开(公告)号：MX9802151A

    公开(公告)日：1998-08-30

    申请号：MX9802151

    申请日：1998-03-19

    Applicant: BASF AG

    Inventor： HEINEKE DANIEL ,  RIEKER CHRISTOPHER WILLIAM ,  OOSTVOGELS JOZEF ,  POSTELMANS DANY ,  SCHNEIDER HEINZ-WALTER ,  THOME ALFRED ,  ACHHAMMER GUENTHER

    IPC: B01J23/42 ,  B01J23/96 ,  B01J37/16 ,  B01J38/48 ,  C01B21/14

    Abstract: La presente invencion se refiere a la preparacion de un catalizador de hidrogenacion reduciendo platino en el estado de oxidacion +4 (PL (IV)), con un agente reductor selectivo en un medio acuoso ácido en presencia de un portador que contenga carbono, a platino en el estado de oxidacion +2 (PL (II)), después el envenenamiento del platino resultante con un agente reductor selectivo que contenga azufre y luego reduciendo el platino parcialmente envenenado en esta forma a platino metálico (PL (O)) y después el tratamiento en una forma conocida per se, en donde (a) el (PL (II)) es parcialmente envenenado con un agente reductor selectivo que contiene azufre, el agente reductor se utiliza en una cantidad que corresponde a 15-70% mol de la cantidad de un agente reductor selectivo que contiene azufre, que sería necesario para reducir Pt (IV)) a Pt (II), siempre y cuando la cantidad de Pt (IV) corresponda a la cantidad de Pt (II) utilizado y que se va a envenenar, y el Pt (II) parcialmente envenenado entonces se reduce con un formato de metal alcalino en Pt (0), o (b) El platino en un estado de oxidacion superior a +2 es parcialmente envenenado y se reduce posteriormente o en forma simultánea por medio de un formato de metal alcalino a Pt (0), y el catalizador de hidrogenacion, el uso del catalizador de hidrogenacion para la preparacion de sales de hidroxilamonio, los procesos para la preparacion de las sales de hidroxilamonio y un proceso para regenerar los catalizadores de hidrogenacion que contienen platino.

    9.
    发明专利
    未知

    公开(公告)号：DE3642314A1

    公开(公告)日：1988-06-23

    申请号：DE3642314

    申请日：1986-12-11

    Applicant: BASF AG

    Inventor： DECKER EMILE DE ,  OOSTVOGELS JOZEF ,  WAUWE GERARD VAN ,  NEUBAUER GERALD DR

    IPC: C07D201/04 ,  C07D201/16

    Abstract: Caprolactam is prepared in a process comprising (a) a Beckmann rearrangement of cyclohexanone oxime with oleum at from 70 DEG to 130 DEG C. in one or more rearrangement stages, and (b) aftertreatment of the reaction mixture obtained from the rearrangement stage in a delay zone at from 70 DEG to 110 DEG C. for from 10 to 600 minutes.

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