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    PRODUCTION AND USE OF A CATALYST CARRIER
    81.
    发明专利
    PRODUCTION AND USE OF A CATALYST CARRIER 未知

    公开(公告)号：CA1142502A

    公开(公告)日：1983-03-08

    申请号：CA372117

    申请日：1981-03-02

    Applicant: HOECHST AG

    Inventor： VOGT WILHELM ,  GLASER HERMANN ,  DYRSCHKA HELMUT

    IPC: B01D53/94 ,  B01D53/86 ,  B01J23/56 ,  B01J23/63 ,  B01J23/86 ,  B01J23/89 ,  B01J27/25 ,  B01J37/02 ,  B01J37/08

    Abstract: PRODUCTION AND USE OF A CATALYST CARRIER The invention relates to the production of a catalyst carrier. To this end, a chrome/aluminum-steel structure is annealed over a period of 2 to 50 hours, at temperatures within the range 800 to 1100.degree.C with admission of air, and a cerium dioxide layer is applied to the surface of the annealed structure. More specifically a structure made up of an alloy containing 10 to 30 weight % Cr; 3 to 8 weight % Al; up to 5 weight % Mn, Ti, Si, C, P and S, the balance being Fe; is annealed, the annealed structure is impregnated with a suspension of cerium oxide hydrate in an aqueous ammonium nitrate solution; dried and annealed for 5 to 20 hours at temperatures within the range 600 to 1000.degree.C. The invention also relates to the use of the catalyst carrier in the production of a catalyst for the decontamination of exhaust gases of internal combustion engines or production facilities. To this end the catalyst carrier is coated with 0.05 to 0.5 weight % of at least one noble metal by impregnating it with an aqueous solution of at least one noble metal compound, drying it at 40 to 80.degree.C and heating it at 250 to 400.degree.C.

    PROCESS FOR THE OXIDATION OF CARBON MONOXIDE AND HYDROCARBONS
    86.
    发明专利
    PROCESS FOR THE OXIDATION OF CARBON MONOXIDE AND HYDROCARBONS 未知

    公开(公告)号：CA1065123A

    公开(公告)日：1979-10-30

    申请号：CA222637

    申请日：1975-03-20

    Applicant: HOECHST AG

    Inventor： VOGT WILHELM ,  GLASER HERMANN ,  DYRSCHKA HELMUT

    IPC: B01D53/94 ,  B01J23/10 ,  B01J37/00 ,  F01N3/15

    Abstract: PROCESS FOR THE OXIDATION OF CARBON MONOXIDE AND HYDROCARBONS. Carbon monoxide and hydrocarbons contained in exhaust gas of internal combustion engines are oxidized with oxygencontaining gas to carbon dioxide and water. The oxidation is effected at 150-800.degree.C in contact with a carrier-supported catalyst, wherein alumina partially converted to .alpha.-Al2O3 is the carrier and cerium in oxide form is the catalytically active ingredient, the catalytically active ingredient constituting 0.2 to 10 weight % of the carrier being deposited thereon, The oxidation is more particularly carried out in contact with a carrier-supported catalyst being produced by compressing hydrous alumina or unstable anhydrous alumina into shapes; annealing the shapes for 10 - 20 hours at 1000 - 1250.degree.C; impregnating the annealed shapes with an aqueous solution of a cerium salt of a readily decomposable acid; drying the cerium salt so applied to the shapes at 130 - 150.degree.C; decomposing the dry cerium salt by gradually heating the shapes to temperatures within the range 200 and 300.degree.C and 450 and 550.degree.C, respectively; and annealing the resulting shapes containing cerium oxide at 700 - 900.degree.C.

    87.
    发明专利
    未知

    公开(公告)号：NO139226C

    公开(公告)日：1979-01-24

    申请号：NO334872

    申请日：1972-09-19

    Applicant: HOECHST AG

    Inventor： KANDLER JOACHIM ,  MERKENICH KARL ,  HENNING KLAUS ,  VOGT WILHELM ,  AUER EBERHARD ,  GLASER HERMANN

    IPC: C11D3/00 ,  C11D3/20 ,  C11D3/16

    Abstract: Water-soluble salts of acid carboxylic acid esters of bivalent aliphatic or olefinically unsaturated carboxylic acids or hydroxycarboxylic acids and at least trihydric aliphatic alcohols are used as builders for detergent and cleansing agents. Each hydroxylic group of the alcohol or optionally of the carboxylic acid has a carboxylic acid-molecule attached thereto.

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