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    Reactor for catalytically oxidizing ammonia to nitrogen oxides
    91.
    发明专利
    Reactor for catalytically oxidizing ammonia to nitrogen oxides 未知

    公开(公告)号：DE19819882A1

    公开(公告)日：1999-10-28

    申请号：DE19819882

    申请日：1998-04-27

    Applicant: BASF AG

    Inventor： SCHUMACHER VOLKER ,  BUERGER GERT ,  FETZER THOMAS ,  BAIER MICHAEL ,  HESSE MICHAEL

    IPC: B01D53/94 ,  B01D53/86 ,  B01J23/80 ,  C01B21/26 ,  C01B21/40

    Abstract: Reactor for catalytically oxidizing ammonia to nitrogen oxides contains a catalyst for decomposing N2O arranged between a precious metal lattice catalyst and a heat exchanger. Independent claims are also included for: (A) an apparatus for the production of nitric acid from ammonia comprising a reactor for catalytically oxidizing ammonia to nitrogen oxides containing a catalyst for decomposing N2O arranged between a precious metal lattice catalyst and a heat exchanger, and an absorber for nitrogen oxides, and a reducer for reducing nitrogen oxides; and (B) a process for catalytically decomposing N2O comprising contacting a hot gas mixture produced from the catalytically oxidation of ammonia with the catalyst for decomposing N2O before subsequent cooling.

    93.
    发明专利
    未知

    公开(公告)号：DE19546481C2

    公开(公告)日：1998-08-13

    申请号：DE19546481

    申请日：1995-12-13

    Applicant: DAIMLER BENZ AG ,  BASF AG

    Inventor： HARTWEG MARTIN ,  SEIBOLD ANDREA ,  WALZ LEONHARD ,  FETZER THOMAS ,  MORSBACH BERND

    IPC: B01D53/94 ,  B01J23/00 ,  B01J23/76 ,  B01J23/80 ,  B01J23/84 ,  B01J23/847 ,  B01J23/89

    Abstract: The catalyst comprises a spinel consisting of copper, zinc and aluminium. The spinel of formula CaaZnbAlcO4 is mixed with palladium, platinum, rhodium, ruthenium, osmium, iridium or rhenium and/or rare earth such as lanthanum and cerium, vanadium, titanium, niobium, molybdenum, tungsten and/or their salts; where a + b + c = 3 and a > 0, b > 0 and c > O. Also claimed is the production of the catalyst in which a spinel is produced from copper oxide, zinc oxide and aluminium oxide, and to the spinel is added Pd, Pt, Rh, Re, Os, Ir, Ru and/or rare earths, e.g. Ln and Ce, V, Ti, Mo, W and their salts and oxides. The spinel is preferably impregnated with cerium oxide in an amount of 0.5-15 wt.% especially 1-8 wt.%.

    METHOD FOR PRODUCING CARBONYL COMPOUNDS
    94.
    发明专利
    METHOD FOR PRODUCING CARBONYL COMPOUNDS 未知

    公开(公告)号：CA2274492A1

    公开(公告)日：1998-07-02

    申请号：CA2274492

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： RESCH PETER ,  RUPPEL WILHELM ,  WACHE HARRO ,  RUETTER HEINZ ,  MENIG HELMUTH ,  FETZER THOMAS ,  DEMUTH DIRK

    IPC: B01J23/72 ,  C07C45/38 ,  C07C45/39 ,  C07C47/127

    Abstract: The invention relates to a method for producing carbonyl compounds of formula (I), in which R1 is a hydrogen atom or an alkyl radical with between 1 and 3 C atoms; R2 is a hydrogen atom or a radical of formula (II) in which R3 is a hydrogen atom or, together with R4, an oxygen atom; R4 is the radical OR6 or, together with R3, an oxygen atom; R5 is a hydrogen atom, an alkyl radical with between 1 and 8 C atoms or a cyclohexyl or cyclopentyl radical; and R6 is an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO. According to said method, the carbonyl compounds are produced by gas-phase oxidation of methanol or alcohols of formula (III), in which R1 and R5 have the meaning assigned above and R7 is a hydrogen atom or an OR8 radical, and R8 is a hydrogen atom, an alkyl radical with between 1 and 4 C atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CH2-OH or -CH2-CH2-O-CH2-CH2-OH, with a gas containing oxygen, in the presence of catalysts containing copper and/or silver and a phosphorus compounds which is volatile under reaction conditions, in such a quantity that the quantity of phosphorus (calculated as P) in relation to the part by weight of alcohol used is up to 20 ppm. The method is characterized in that the quantity of phosphorus is added in the catalyst bed.

    95.
    发明专利
    未知

    公开(公告)号：DE19546481A1

    公开(公告)日：1997-06-19

    申请号：DE19546481

    申请日：1995-12-13

    Applicant: DAIMLER BENZ AG ,  BASF AG

    Inventor： HARTWEG MARTIN ,  SEIBOLD ANDREA ,  WALZ LEONHARD ,  FETZER THOMAS ,  MORSBACH BERND

    IPC: B01D53/94 ,  B01J23/00 ,  B01J23/76 ,  B01J23/80 ,  B01J23/84 ,  B01J23/847 ,  B01J23/89

    Abstract: The catalyst comprises a spinel consisting of copper, zinc and aluminium. The spinel of formula CaaZnbAlcO4 is mixed with palladium, platinum, rhodium, ruthenium, osmium, iridium or rhenium and/or rare earth such as lanthanum and cerium, vanadium, titanium, niobium, molybdenum, tungsten and/or their salts; where a + b + c = 3 and a > 0, b > 0 and c > O. Also claimed is the production of the catalyst in which a spinel is produced from copper oxide, zinc oxide and aluminium oxide, and to the spinel is added Pd, Pt, Rh, Re, Os, Ir, Ru and/or rare earths, e.g. Ln and Ce, V, Ti, Mo, W and their salts and oxides. The spinel is preferably impregnated with cerium oxide in an amount of 0.5-15 wt.% especially 1-8 wt.%.

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