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    72.
    发明专利
    未知

    公开(公告)号：DE59505070D1

    公开(公告)日：1999-03-25

    申请号：DE59505070

    申请日：1995-06-16

    Applicant: BASF AG

    Inventor： RIEBER NORBERT DR ,  LINGELBACH PETER DR ,  WITZEL TOM DR ,  MUELLER ULRICH DR

    IPC: B01J21/06 ,  B01J31/02 ,  C07B61/00 ,  C07C249/04 ,  C07C251/38 ,  C07C251/40 ,  C07C251/44

    Abstract: The prodn. of aliphatic and cycloaliphatic oximes (1) comprises reacting the corresp. imine (2) with oxygen or oxygen-contg. gas in the presence of a catalyst, except for catalysts of formula (Tix(M*D1-x)(2n/3*E1-x))O2 (I), where D = Si or Ge; E = Ce of Al; x = 0.06-0.9; m = 1 if n = 0; m = 0 if n = 1. Also claimed is a process for the prodn. of (1) comprising (a) imination of the corresp. ketone with ammonia by known methods followed by (b) catalytic oxidn. of the imine as above.

    73.
    发明专利
    未知

    公开(公告)号：DE19726670A1

    公开(公告)日：1998-12-24

    申请号：DE19726670

    申请日：1997-06-23

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE DR ,  RIEBER NORBERT DR ,  BREUER KLAUS ,  DEMUTH DIRK DR ,  HIBST HARTMUT PROF DR ,  HAGEMEYER ALFRED DR

    IPC: B01J23/08 ,  B01J21/16 ,  B01J23/06 ,  B01J37/03 ,  C01B33/20 ,  C07B41/00 ,  C07B61/00 ,  C07C41/06 ,  C07C41/08 ,  C07C41/54 ,  C07C43/15 ,  C07C43/16 ,  C07C43/303 ,  C07C43/14 ,  C07C43/162 ,  C07C43/166 ,  C07C69/007 ,  C07C67/04

    Abstract: An alkaline silicate suspension is reacted with an aqueous solution of a zinc salt at normal pressure and at temperatures between 50 degrees C and the boiling point of the suspension arising. It is alternatively reacted under hydrothermal conditions at the suspension boiling point up to 250 degrees C. Aqueous pH value is held at 4-9.5 throughout. The Zn/Si atom ratio is kept within 1.6-2.5. Preferred Features: From the product, a suitable zinc silicate, is formed. This has the hemimorphite structure as claimed, the composition Zn4Si2O7(OH)2-2yOy.xH2O, where x and y are between 0 and 1. To this end the product is roasted at temperatures of 70-600 degrees C. pH is maintained in the region 5.5-8 or 6-7.5. When reactin other salts, 0-20 mol% of the following group A, referred to zinc, is used with 0-20 mol% of the following group B, referred to silicon, (i.e. the elements in the hemimorphite structure described). Group A comprises: beryllium, magnesium, calcium, strontiu barium, manganese, iron, cobalt, nickel, copper, cadmium and mercury. Group B comprises: titanium, zirconium, hafnium, germanium tin and lead

    Cyclic, large-scale production of alkylene oxide from olefin
    76.
    发明专利
    Cyclic, large-scale production of alkylene oxide from olefin 未知

    公开(公告)号：DE19633328A1

    公开(公告)日：1998-02-26

    申请号：DE19633328

    申请日：1996-08-20

    Applicant: BASF AG

    Inventor： FISCHER ROLF DR ,  RIEBER NORBERT DR ,  SCHNURR WERNER DR ,  SCHULZ MICHAEL DR ,  TELES JOAQUIM HENRIQUE ,  TREIBER GERT DR

    IPC: C07D301/14 ,  C07D303/04

    Abstract: Production of an alkylene oxide (A) involves (a) epoxidation of the corresponding olefin with aromatic peroxycarboxylic acid (I) and separation of the resultant aromatic carboxylic acid (II), (b) hydrogenation of (II) to the corresponding aldehyde (III) and (c) oxidation of (III) with oxygen (or gas containing oxygen) to (I), which is re-used for the epoxidation. The novel feature is that (i) (II) and/or (III) lost in the cycle is replaced by compounds obtained by oxidation of the parent alkyl-aromatics, (ii) phenolic by-products in the aldehydes are removed before stage (c) or (iii), if the olefin has 2-6C, it is prepared by dehydrogenation of a corresponding 2-6C hydrocarbon.

    79.
    发明专利
    未知

    公开(公告)号：DE19505858A1

    公开(公告)日：1996-10-31

    申请号：DE19505858

    申请日：1995-02-21

    Applicant: BASF AG

    Inventor： TELES JOAQUIM HENRIQUE DR ,  SCHNURR WERNER DR ,  FISCHER ROLF DR ,  RIEBER NORBERT DR ,  SCHULZ MICHAEL DR

    IPC: C07C45/41 ,  C07D301/14 ,  C07D303/04 ,  C07D303/12 ,  C07C409/30 ,  C07C407/00 ,  B01J23/10

    Abstract: PCT No. PCT/EP96/00578 Sec. 371 Date Aug. 5, 1997 Sec. 102(e) Date Aug. 5, 1997 PCT Filed Feb. 10, 1996 PCT Pub. No. WO96/26198 PCT Pub. Date Aug. 29, 1996Preparation of epoxides from olefins by means of aromatic peroxycarboxylic acids comprises a step A of epoxidizing the olefin and removing the resulting aromatic carboxylic acid from the epoxide, a step B of catalytically hydrogenating the removed aromatic carboxylic acid to the corresponding aromatic aldehyde, and a step C of oxidizing this aldehyde with oxygen or an oxygen-containing gas mixture back to the aromatic peroxycarboxylic acid for re-use for epoxidizing an olefin.

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