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    CATALYST AND ITS MANUFACTURE AND USE THEREOF
    1.
    发明专利
    CATALYST AND ITS MANUFACTURE AND USE THEREOF 失效

    公开(公告)号：JPH09173847A

    公开(公告)日：1997-07-08

    申请号：JP35936496

    申请日：1996-12-12

    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: PROBLEM TO BE SOLVED: To improve purifying effects of NOx in exhaust gas of internal combustion engine in a catalyst comprising spinel including copper, zinc, and aluminum by adding predetermined rare earth element or the like to specific copper oxide- zinc oxide-aluminum oxide spinel. SOLUTION: This catalyst, which is suitable for purifying NOx in exhaust gas produced by a Diesel engine or thin mixture engine, is composed of spinel including copper, zinc, and aluminum, in which copper oxide-zinc oxide-aluminum oxide spinel represented by the formula CuAZnBAlCO4 is used. And palladium, platinum, rhodium, ruthenium, osmium, iridium, rhenium, a rare earth element such as lanthanum or cerium, vanadium, titanium, molybdenum, tungsten, or salts thereof or oxides thereof are added to the spinel. In the formula, A+B+C 0, B>0, C>0.

    5.
    发明专利
    未知

    公开(公告)号：ES2159896T3

    公开(公告)日：2001-10-16

    申请号：ES97954415

    申请日：1997-12-17

    Applicant: BASF AG ,  DAIMLER CHRYSLER AG

    Inventor： FETZER THOMAS ,  MORSBACH BERND ,  KUMBERGER OTTO ,  HARTWEG MARTIN ,  ROITZHEIM ROLF-DIRC ,  SEIBOLD ANDREA

    IPC: B01D53/94 ,  B01J23/00 ,  B01J23/89 ,  F01N3/10

    Abstract: PCT No. PCT/EP97/07091 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 17, 1997 PCT Pub. No. WO98/26858 PCT Pub. Date Jun. 25, 1998A process for the catalytic reduction of NOx, the reduction taking place in the presence of a catalyst which comprises (a) from 20 to 97 wt % of A2O3, (b) from 1 to 40 wt % of CuO, (c) from 1 to 50 wt % of ZnO, (d) from 1 to 40 wt % of Ag, (e) from 0 to 2 wt % of Pt, (f) from 0 to 20 wt % of oxides of rare earth metals, elements of the 3rd subgroup of the Periodic Table of the Elements or mixtures thereof, based on the total weight of the components (a) to (e), which adds up to 100 wt %, wherein, in each case, up to half the weight of the component (a) may be replaced by Fe2O3, Cr2O3, Ga2O3 or mixtures thereof, of the component (b) by CoO, of the component (c) by MgO, of the component (d) by Au and of the component (e) by Pd, Ru, Os, Ir, Rh, Re or mixtures thereof, is used for reducing NOx, especially in combustion off-gases, the components (a), (b) and (c) forming a spinel which is doped with the components (d), (e) and (f).

    NOx REDUCTION PROCESS OF WASTE GASES
    6.
    发明专利
    NOx REDUCTION PROCESS OF WASTE GASES 未知

    公开(公告)号：CZ168898A3

    公开(公告)日：1998-11-11

    申请号：CZ168898

    申请日：1996-12-11

    Applicant: BASF AG

    Inventor： FETZER THOMAS ,  MORSBACH BERND ,  HARTWEG MARTIN ,  ROITZHEIM RALF-DIRC ,  SEIBOLD ANDREA ,  WALZ LEONHARD

    IPC: B01D53/94 ,  B01J23/00 ,  B01J23/80 ,  B01D53/86

    Abstract: PCT No. PCT/EP96/05532 Sec. 371 Date Jun. 2, 1998 Sec. 102(e) Date Jun. 2, 1998 PCT Filed Dec. 11, 1996 PCT Pub. No. WO97/21482 PCT Pub. Date Jun. 19, 1997NOx, where x is 1 and 2, in exhaust gases is reduced over heterogeneous catalysts with hydrocarbons, carbon monoxide, hydrogen or mixtures thereof in the presence of oxygen from 100 to 650 DEG C. and an absolute pressure of from 0.5 to 50 bar by a process in which the heterogeneous catalysts used are bimodal or polymodal compounds of the general formula IA1-xM2O4(I),which, if required, are doped with rare earth metals, noble metal, titanium, vanadium, molybdenum, tungsten or mixtures thereof, and where A is magnesium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or mixtures thereof, M is aluminum, gallium, indium, tin, chromium, manganese, iron, cobalt, nickel, copper, zinc or mixtures thereof and x is from 0 to 0.99, whose oxygen atoms are in a cubic close packed arrangement and A is present in the tetrahedral sites and M in the octahedral sites, it also being possible for A to occupy octahedral sites if an equivalent amount of M occupies tetrahedral sites.

    9.
    发明专利
    未知

    公开(公告)号：BR9611956A

    公开(公告)日：1999-12-28

    申请号：BR9611956

    申请日：1996-12-11

    Applicant: BASF AG

    Inventor： HARTWEG MARTIN ,  ROITZHEIM RALF-DIRC ,  SEIBOLD ANDREA

    IPC: B01D53/94 ,  B01J23/00 ,  B01J23/80 ,  B01D53/86

    Abstract: PCT No. PCT/EP96/05532 Sec. 371 Date Jun. 2, 1998 Sec. 102(e) Date Jun. 2, 1998 PCT Filed Dec. 11, 1996 PCT Pub. No. WO97/21482 PCT Pub. Date Jun. 19, 1997NOx, where x is 1 and 2, in exhaust gases is reduced over heterogeneous catalysts with hydrocarbons, carbon monoxide, hydrogen or mixtures thereof in the presence of oxygen from 100 to 650 DEG C. and an absolute pressure of from 0.5 to 50 bar by a process in which the heterogeneous catalysts used are bimodal or polymodal compounds of the general formula IA1-xM2O4(I),which, if required, are doped with rare earth metals, noble metal, titanium, vanadium, molybdenum, tungsten or mixtures thereof, and where A is magnesium, calcium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or mixtures thereof, M is aluminum, gallium, indium, tin, chromium, manganese, iron, cobalt, nickel, copper, zinc or mixtures thereof and x is from 0 to 0.99, whose oxygen atoms are in a cubic close packed arrangement and A is present in the tetrahedral sites and M in the octahedral sites, it also being possible for A to occupy octahedral sites if an equivalent amount of M occupies tetrahedral sites.

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