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.

公开(公告)号：PL320502A1

公开(公告)日：1997-10-13

申请号：PL32050295

申请日：1995-11-29

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  ACHHAMMER GUENTHER

IPC: C07D201/08 ,  C07D223/10

Abstract: An improved process for the preparation of caprolactam by heating 6-aminocapronitrile in the presence of a heterogenous catalyst and water under superatmospheric pressure without rapid deactivation of the catalysts used. The process further includes the addition of a low or high boiling alcohol in the heating phase, after which the products are obtained by distillation. The process further includes a method of working up the top and bottom products of the reactors to achieve higher yields.

公开(公告)号：NO972503L

公开(公告)日：1997-08-01

申请号：NO972503

申请日：1997-06-02

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  ACHHAMMER GUENTHER

IPC: C07D201/08 ,  C07D223/10

Abstract: An improved process for the preparation of caprolactam by heating 6-aminocapronitrile in the presence of a heterogenous catalyst and water under superatmospheric pressure without rapid deactivation of the catalysts used. The process further includes the addition of a low or high boiling alcohol in the heating phase, after which the products are obtained by distillation. The process further includes a method of working up the top and bottom products of the reactors to achieve higher yields.

公开(公告)号：FI972839A

公开(公告)日：1997-07-02

申请号：FI972839

申请日：1997-07-02

Applicant: BASF AG

Inventor： ACHHAMMER GUENTHER ,  BASSLER PETER ,  FISCHER ROLF ,  FUCHS EBERHARD ,  LUYKEN HERMANN ,  SCHNURR WERNER ,  WITZEL TOM

IPC: C07D201/02 ,  C07C209/48 ,  C07C211/12 ,  C07D201/08 ,  C07D223/10 ,  C07C

Abstract: The invention concerns the simultaneous preparation of caprolactam and hexamethylene diamine from adipodinitrile, by the following steps: (a) the adipodinitrile is partially hydrogenated, producing a mixture substantially containing 6-aminocapronitrile, hexamethylene diamine, ammonia, adipodinitrile and hexamethylene imine (= "the mixture"); (b) the mixture obtained in step (a) is distilled, producing ammonia, as the forerunnings, and a residue I, in the presence of a compound A which is inert in the distillation conditions, the ammonia not being separated totally; (c) the residue I, substantially containing "the mixture", inert compound A and ammonia, the ammonia content being less than that of the mixture used in step (b), is subjected to a second distillation, producing a mixture of the inert compound A and ammonia, as the forerunnings, and a residue II; (d) the base II, substantially containing "the mixture" and inert compound A, is subjected to distillation in a third column, producing the inert compound A, as the forerunnings, and a residue III; (e) the base III, substantially containing "the mixture" and optionally an inert compound B, is subjected to distillation in a fourth column, producing forerunnings KP1, which substantially contain hexamethylene imine, optionally inert compound B and hexamethylene diamine, and a residue IV; (f) the forerunnings KP1 are subjected in a fifth column to distillation, producing forerunnings KP2, which substantially contain hexamethylene imine and optionally inert compound B, and a residue V, which substantially contains hexamethylene diamine with a degree of purity of at least 95 %, the forerunnings KP2 being fed to the third column or optionally only partially fed to the third column, and the rest being discarded; and (g) the residue IV, substantially containing 6-aminocapronitrile and adipodinitrile, is subjected in a sixth column to distillation, producing 6-aminocapronitrile with a degree of purity of at least 95 %, as forerunnings, and adiponitrile in the residue. The resultant 6-aminocapronitrile is cyclized to form caprolactam.

公开(公告)号：FI972340A0

公开(公告)日：1997-06-02

申请号：FI972340

申请日：1997-06-02

Applicant: BASF AG

Inventor： FUCHS EBERHARD ,  ACHHAMMER GUENTHER

IPC: C07D201/08 ,  C07D223/10 ,  C07D

Abstract: An improved process for the preparation of caprolactam by heating 6-aminocapronitrile in the presence of a heterogenous catalyst and water under superatmospheric pressure without rapid deactivation of the catalysts used. The process further includes the addition of a low or high boiling alcohol in the heating phase, after which the products are obtained by distillation. The process further includes a method of working up the top and bottom products of the reactors to achieve higher yields.