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    METHOD FOR PRODUCING EPOXIDE
    1.
    发明专利
    METHOD FOR PRODUCING EPOXIDE 失效

    公开(公告)号：JP2001097966A

    公开(公告)日：2001-04-10

    申请号：JP2000282596

    申请日：2000-09-18

    Applicant: DEGUSSA

    Inventor： THIELE GEORG DR

    IPC: C07B61/00 ,  C07D301/12 ,  C07D301/32 ,  C07D303/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an epoxide from the corresponding olefin. SOLUTION: This method comprises epoxidation of an olefin-based compound using hydrogen peroxide in the presence of titanium silicalite catalyst; wherein a base or its mixture with at least one starting material is introduced under pH control into an epoxidation reactor; in this case, the pH value is adjusted to 4-9.5, esp. 5-9.5 in the reaction mixture or base-contg. starting material and the pH level is maintained. It is advantageous that the epoxidation is conducted in a fixed bed reactor using an aqueous-organic hydrogen peroxide solution with pH 8-9.

    PRODUCTION OF MOLECULAR SIEVE CONTAINING CRYSTALLINE TITANIUM AND USE OF MOLECULAR SIEVE PRODUCED BY THE SAME METHOD
    2.
    发明专利
    PRODUCTION OF MOLECULAR SIEVE CONTAINING CRYSTALLINE TITANIUM AND USE OF MOLECULAR SIEVE PRODUCED BY THE SAME METHOD 失效

    公开(公告)号：JPH10139421A

    公开(公告)日：1998-05-26

    申请号：JP28986997

    申请日：1997-10-22

    Applicant: DEGUSSA

    Inventor： HASENZAHL STEFFEN DR ,  THIELE GEORG DR

    IPC: B01D9/02 ,  B01J29/03 ,  B01J29/89 ,  C01B37/00 ,  C01B39/48 ,  C07B41/02 ,  C07B41/06 ,  C07B43/00 ,  C07B61/00 ,  C07D301/12

    Abstract: PROBLEM TO BE SOLVED: To provide the subject method which enables, in particular, the sol production process to be simplified by crystallizing at high temperature the effluent from the reaction of a mixture of tetraalkylorthosilicate and tetraalkylorthotitanate sealed in a reaction vessel with an aqueous template solution added to the mixture, and then firing the solid product after it is separated. SOLUTION: This method adds an aqueous template solution to a mixture of tetraalkylorthosilicate and tetraalkylorthotitanate sealed in a reaction vessel, and supplies the effluent to an autoclave without distilling off the alcohol produced as a result of the hydrolysis, where a solid product is crystallized at > 100 deg.C under a self-developed pressure; then separates, washes and fires the solid product at 400 to 1000 deg.C, to obtain the objective titanium-containing molecular sieve whose composition is shown by the formula (SiO2 ) 1-x (TiO2 )x (0.0001

    PROCESS FOR THE PURIFICATION OF CRUDE PROPENE OXIDE
    5.
    发明专利
    PROCESS FOR THE PURIFICATION OF CRUDE PROPENE OXIDE 未知

    公开(公告)号：MY145599A

    公开(公告)日：2012-02-29

    申请号：MYPI20034465

    申请日：2003-11-20

    Applicant: EVONIK DEGUSSA GMBH ,  UHDE GMBH

    Inventor： HOFEN WILLI ,  HAAS THOMAS DR ,  WOELL WOLFGANG ,  THIELE GEORG DR

    IPC: C07C45/83 ,  C07D301/32

    Abstract: THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PURIFICATION OF A CRUDE PROPENE OXIDE CONTAINING METHANOL AND ACETALDEHYDE BY A CONTINUOUSLY OPERATED EXTRCATIVE DISTILLATION USING AN EXTRACTION SOLVENT LOWERING THE VOLATILITY OF METHANOL AND FEEDING A COMPOUND CONTAINING AN UNSUBSTITUTED NH2 GROUP CAPABLE OF REACTING WITH ACETALDEHYDE TO A DISTILLATION COLUMN AT A POINT ABOVE THE FEEDING POINT OF THE CRUDE PROPENE OXIDE TO GIVE A PURIFIED PROPENE OXIDE CONTAINING LESS THAN 100 PPM METHANOL AND LESS THAN 100 PPM ACETALDEHYDE. THE INVENTION ALSO RELATES TO A PROCESS FOR THE CATALYTIC EPOXIDATION OF PROPENE THAT INCLUDES THIS PURIFICATION EPOXIDATION OF PROPENE THAT INCLUDES THIS PURIFICATION STAGE.

    7.
    发明专利
    未知

    公开(公告)号：AT295359T

    公开(公告)日：2005-05-15

    申请号：AT00118709

    申请日：2000-08-30

    Applicant: DEGUSSA ,  UHDE GMBH

    Inventor： THIELE GEORG DR

    IPC: C07B61/00 ,  C07D301/12 ,  C07D301/32 ,  C07D303/04

    Abstract: A process for production of epoxides by epoxidation of olefins with hydrogen peroxide in presence of titanium silicalite catalyst and base, in which the base is fed into the reactor directly or with starting material(s) so as to control pH and the pH value in the reaction mixture or the base-containing mixture(s) is kept essentially constant in the range 4-9.5.

    9.
    发明专利
    未知

    公开(公告)号：ES2091072T3

    公开(公告)日：1996-10-16

    申请号：ES94110328

    申请日：1994-07-02

    Applicant: DEGUSSA

    Inventor： THIELE GEORG DR ,  ROLAND ECKEHART DR

    IPC: B01J29/40 ,  B01J29/70 ,  B01J29/80 ,  B01J29/89 ,  B01J37/02 ,  C01B39/02 ,  C01B39/36 ,  C01B39/38 ,  C07B61/00 ,  C07C249/04 ,  C07C249/08 ,  C07C251/44 ,  C07D301/12 ,  C07D303/04

    Abstract: Catalyst composed of the oxides of silicon, aluminium and titanium, characterised in that the catalyst particles are made up of a core of the composition (SiO2)x(AlO2)yMy where x/y = 10 - INFINITY and M = H, Na, K, NH4, NR4, where R = C1-C8-alkyl, and a shell of the composition (SiO2)n(TiO2)m where n/m = 12 - 1000 and both core and shell have a crystal structure of the type MFI or MEL. The catalyst can be produced by preparing in a known manner a synthesis gel for the preparation of a titanosilicalite, introducing into this synthesis gel an aluminosilicate of the structural type MFI or MEL and further processing the synthesis gel in a known manner.

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