中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

45 records (took 0.017 seconds)

    PRODUCTION OF 3-HYDROXYPROPTONIC ACID OR ITS SALT
    1.
    发明专利
    PRODUCTION OF 3-HYDROXYPROPTONIC ACID OR ITS SALT 失效

    公开(公告)号：JPH1072401A

    公开(公告)日：1998-03-17

    申请号：JP19215197

    申请日：1997-07-17

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  MARTIN MEIER ,  BROSMER CHRISTOPH ,  ARNTZ DIETRICH DR ,  FREUND ANDREAS DR

    IPC: B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  C07B61/00 ,  C07C51/235 ,  C07C59/01

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 3-hydroxypropionic acid in high yield by using 3-hydroxypropionaldehyde as a 3C constituent. SOLUTION: The objective 3-hydroxypropionic acid or its salt is produced by using 3 hydroxypropionaldehyde as a 3C constituent and at least 10wt.% catalyst expressed in terms of a noble metal based on the 3C constituent when the 3C constituent is catalytically oxidized with oxygen or a gas containing the oxygen in aqueous phase in the presence of the catalyst containing the noble metal of the platinum group, and further the objective 3-hydroxypropionic acid or its salt is isolated from the reaction mixture. Moreover, preferably, the catalyst is used in the amount corresponding to 20-50wt.% based on the 3C constituent and a supported catalyst containing platinum is especially used as the catalyst. The catalytic oxidation is preferably performed without regulating the pH at a temperature within a range of 20-60 deg.C.

    PRODUCTION OF MALONIC ACID OR SALT OF THE SAME
    2.
    发明专利
    PRODUCTION OF MALONIC ACID OR SALT OF THE SAME 失效

    公开(公告)号：JPH1067701A

    公开(公告)日：1998-03-10

    申请号：JP19215297

    申请日：1997-07-17

    Applicant: DEGUSSA

    Inventor： HAAS THOMAS DR ,  MEIER MARTIN DR ,  BROSMER CHRISTOPH DR ,  ARNTZ DIETRICH DR ,  FREUND ANDREAS DR

    IPC: C07C51/235 ,  C07C55/08

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound in a high yield useful as a synthetic material by a catalytic oxidation of a C3 component. SOLUTION: This objective malonic acid or its salt can be obtained by carrying out the catalytic oxidation of the C3 component in water phase by oxygen or oxygen containing gas in the presence of a catalyst containing a noble metal selected from platinum group (e.g. Ru, Rh, Pd, Os, Ir, Pt), at pH >=6, at the temperature range of 20-60 deg.C. Easily purchasable 3-hydroxypropionaldehyde or 3-hydroxypropionic acid or their aqueous solution is used as the C3 component. The catalysts containing Palladium or Platinum is preferred as the reaction catalyst, the amount of the catalyst to the C3 component is preferably 20-50wt.%.

    RANEY TYPE CATALYST FOR FIXED BED, ITS PRODUCTION AND USE FOR REACTING WITH ORGANIC COMPOUND
    4.
    发明专利
    RANEY TYPE CATALYST FOR FIXED BED, ITS PRODUCTION AND USE FOR REACTING WITH ORGANIC COMPOUND 失效

    公开(公告)号：JP2001054736A

    公开(公告)日：2001-02-27

    申请号：JP2000202548

    申请日：2000-07-04

    Applicant: DEGUSSA

    Inventor： OSTGARD DANIEL ,  FREUND ANDREAS DR ,  REHREN CLAUS DR ,  BERWEILER MONIKA ,  STEPHANI GUENTHER

    IPC: B01J35/02 ,  B01J25/00 ,  B01J25/02 ,  B01J37/00 ,  C07B61/00 ,  C07C209/36 ,  C07C211/46

    Abstract: PROBLEM TO BE SOLVED: To obtain high activity by preliminarily producing metal alloy fibers and/or metal alloy flocks by a crucible metal extraction method, subsequently making them into tablets, pressing them into a mat and/or filling a cartridge with them. SOLUTION: A rapidly cooled material having a controllable shape is obtained by the crucible melting/extracting method, i.e., the method to use a rectangular crucible and a water-cooling copper-made rotary wheel having notches specially formed on the surface of the crucible. The metal alloy flocks or the metal alloy fibers having fixed length and diameter are obtained as the final product according to the design of the notches of the rotary wheel. Subsequently the cartridge is filled with these flocks and/or fibers and they are activated with caustic soda solution. Or these flocks and/or fibers are made into tablets and/or pressed into a mat, optionally using a binder such as nickel powder, which are then calcinated in the air and activated with caustic soda solution.

    MULTICOMPONENT METALLIC CATALYST AND PRODUCTION OF SUBSTITUTED AROMATIC AMINE
    7.
    发明专利
    MULTICOMPONENT METALLIC CATALYST AND PRODUCTION OF SUBSTITUTED AROMATIC AMINE 失效

    公开(公告)号：JPH1076161A

    公开(公告)日：1998-03-24

    申请号：JP19538897

    申请日：1997-07-22

    Applicant: DEGUSSA

    Inventor： AUER EMMANUEL DR ,  FREUND ANDREAS DR ,  GROS MICHAEL ,  HARTUNG ROLF

    IPC: B01J23/46 ,  B01J23/656 ,  B01J23/889 ,  B01J23/89 ,  C07B61/00 ,  C07C209/36 ,  C07C211/45 ,  C07C211/46

    Abstract: PROBLEM TO BE SOLVED: To ensure high selectively by doping iridium with at least one kind of element selected from among Mn, Co, Fe, Ni, Cu and Ru. SOLUTION: This catalyst contains iridium by 0.3-12wt.%, especially O. 5-7wt.% of the amt. of the carrier material and at least one kind of metal selected from among Mn, Fe, Co, Ni, Cu and Ru by 1-100wt.%, especially 5-50wt.% of the amt. of the iridium. It is produced by suspending a carrier in water, adding a soln. of salts of the required metals and reducing the salts with a water-soluble reducing agent at 0-100 deg.C. When this catalyst is used, a substd. arom. nitro compd. can be converted into the corresponding arom. amine by hydrogenation with high selectivity without producing a dehalogenated product and other undesirable by-product.

Patent Agency Ranking