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    21.
    发明专利
    未知

    公开(公告)号：DE4132663C2

    公开(公告)日：1993-10-14

    申请号：DE4132663

    申请日：1991-10-01

    Applicant: DEGUSSA

    Inventor： ARNTZ DIETRICH DR ,  HAAS THOMAS DR ,  SCHAEFER-SINDLINGER ADOLF DR

    IPC: B01J23/42 ,  C07B61/00 ,  C07C29/141 ,  C07C31/20

    Abstract: Process for the preparation of 1,3-propanediol by hydrogenation of hydroxypropionaldehyde (HPA) in aqueous solution on a shaped supported catalyst in a solid bed, the concentration of the HPA in the solution being 5 to 100% by weight, and the hydrogenation being carried out at temperatures from 30 to 180 DEG C and hydrogen pressures from 5 to 300 bar and at a pH between 2.5 and 6.5, characterised in that the supported catalyst consists of titanium oxide, on which platinum is present in finely divided form in an amount relative to the support of 0.1 to 5.0% by weight.

    22.
    发明专利
    未知

    公开(公告)号：DE4138982A1

    公开(公告)日：1993-06-03

    申请号：DE4138982

    申请日：1991-11-27

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  ARNTZ DIETRICH DR ,  BRAND REINHOLD DR

    IPC: B01J27/16 ,  B01J21/06 ,  B01J27/14 ,  C07B61/00 ,  C07C45/64 ,  C07C47/19

    Abstract: A process for the production of 3-hydroxyalkanals, more particularly 3-hydroxypropionaldehyde, by hydration of the basic 2-alkenals, more particularly acrolein, in the presence of a solid catalyst containing acid functional groups. The catalysts are based on an inorganic support containing basic activity centers (which are at least partly occupied by a polybasic acid, of which the first pKs value is between 0 and 3, in a form in which it cannot be removed by water) enables the hydration to be carried out with high selectivity. At the same time, the disadvantages of known organic fixed-bed catalysts are avoided. Preferred catalyst are based on pyrogenic titanium dioxide with phosphoric acid fixed thereon.

    NOVEL AQUEOUS HYDROGEN PEROXIDE SOLUTIONS
    25.
    发明专利
    NOVEL AQUEOUS HYDROGEN PEROXIDE SOLUTIONS 未知

    公开(公告)号：MY140875A

    公开(公告)日：2010-01-29

    申请号：MYPI20033683

    申请日：2003-09-26

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： HAAS THOMAS DR ,  BRASSE CLAUDIA DR ,  STOCHNIOL GUIDO DR ,  GLENNEBERG J XDCRGEN DR ,  LL WOLFGANG W XD

    IPC: B01J29/04 ,  B01J29/89 ,  C01B15/013 ,  C01B15/023 ,  C01B15/037 ,  C07D301/12 ,  C07D303/04

    Abstract: THE PRESENT INVENTION REFERS TO AN AQUEOUS HYDROGEN PEROXIDE SOLUTION COMPRISING: i) LESS THAN 50 WPPM ALKALI METALS, ALKALINE EARTH METALS ORCOMBINATIONS THEREOF IN TOTAL, IRRESPECTIVE WHETHER THE ALKALI OR ALKALINE EARTH METALS ARE PRESENT IN CATIONIC OR COMPLEX FORM; ii) LESS THAN 50 WPPM OF AMINES HAVING A PK B OF LESS THAN 4.5 OR THE CORRESPONDING PROTONATED COMPOUNDS IN TOTAL; AND iii) AT LEAST 100 WPPM ANIONS OR COMPOUNDS THAT CAN DISSOCIATE TO FORM ANIONS IN TOTAL, WHEREBY THE WPPM ARE BASED ON THE WEIGHT OF HYDROGEN PEROXIDE AND THE CONCENTRATION OF HYDROGEN PEROXIDE IS MORE THAN 50BY WEIGHT BASED ON THE TOTAL WEIGHT OF THE HYDROGEN PEROXIDE SOLUTION,@A PROCESS FOR PREPARATION OF SAID HYDROGEN PEROXIDE SOLUTION AND THE USE OF SAID SOLUTION IN A PROCESS FOR EPOXIDATION OF OLEFINS.

    PROCEDIMIENTO PARA PRODUCIR PEROXIDO DE HIDROGENO.
    26.
    发明专利
    PROCEDIMIENTO PARA PRODUCIR PEROXIDO DE HIDROGENO. 未知

    公开(公告)号：ES2240197T3

    公开(公告)日：2005-10-16

    申请号：ES00975919

    申请日：2000-10-26

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  GLENNEBERG JURGEN ,  WAGNER RUDOLF ,  CREUTZ MATTHIAS ,  SAUER JORG ,  VANHEERTUM RUDOLF

    IPC: B01J8/02 ,  B01J10/00 ,  B01J23/44 ,  B01J35/02 ,  C01B15/023

    Abstract: Procedimiento para la producción de peróxido de hidrógeno según el proceso de la antraquinona, que abarca una etapa de hidrogenación y una etapa de oxidación, en el que en la etapa de hidrogenación una solución de trabajo que contiene una antraquinona-soporte de reacción, y una fase gaseosa que contiene hidrógeno, se conducen a una temperatura de 10 a 100ºC y una presión de 0, 1 a 2 MPa, sobre un lecho fijo consistente en catalizador en forma de partículas dispuesto en un reactor de hidrogenación de forma de columna orientado verticalmente, caracterizado porque el reactor de hidrogenación se hace funcionar como columna de burbujeo, en que una mezcla de la solución de trabajo y fase gaseosa que contiene hidrógeno, se hace pasar con una velocidad de tubo vacío, de la solución de trabajo, de 8 a 100 m/h, de abajo hacia arriba.

    27.
    发明专利
    未知

    公开(公告)号：DE50010007D1

    公开(公告)日：2005-05-12

    申请号：DE50010007

    申请日：2000-10-26

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  GLENNEBERG JUERGEN ,  WAGNER RUDOLF ,  CREUTZ MATTHIAS ,  SAUER JOERG ,  VANHEERTUM RUDOLF

    IPC: B01J8/02 ,  B01J10/00 ,  B01J23/44 ,  B01J35/02 ,  C01B15/023

    Abstract: In carrying out the hydrogenation stage of the anthraquinone process for the preparation of hydrogen peroxide in a hydrogenation reactor on a fixed bed catalyst of a particulate catalyst, the service life of the catalyst is increased in that the working solution comprising the reaction carrier and a gas phase comprising hydrogen, are passed through the hydrogenation reactor from the bottom upwards. The empty tube speed of the working solution is 0.05 to 100 m/h, preferably 10 to 50 m/h.

    28.
    发明专利
    未知

    公开(公告)号：DE59806924D1

    公开(公告)日：2003-02-20

    申请号：DE59806924

    申请日：1998-10-20

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  WEBER KARL-LUDWIG DR ,  STADTMUELLER KLAUS ,  HOFEN WILLI ,  VANHEERTUM DR

    IPC: B01J23/75 ,  C07B61/00 ,  C07C209/48 ,  C07C209/52 ,  C07C211/36

    Abstract: A process for the production of primary and/or secondary amines from imines or nitriles, comprising an aminating hydrogenation of imine or of nitrile with hydrogen in the presence of ammonia, of a hydrogenation catalyst based on cobalt, nickel, ruthenium or mixtures of these metals and of a base, at a temperature within the range of 50 DEG C. to 200 DEG C. and at a pressure within the range of 0.3 to 30 MPa. The yield of amine is increased by the use of a quaternary ammonium hydroxide as base. Preferably a tetraalkylammonium hydroxide is used in a quantity of from 0.01 to 100 mMol per mol of amine or of nitrile. The process is suitable in particular for the production of isophoronediamine from isophorone nitrile imine.

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