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公开(公告)号：DE19546484A1
公开(公告)日：1997-07-10
申请号：DE19546484
申请日：1995-12-13
Applicant: DAIMLER BENZ AG , BASF AG
Inventor： WALZ LEONHARD , ROITZHEIM ROLF-DIRC , HARTWEG MARTIN , SEIBOLD ANDREA , FETZER THOMAS , MORSBACH BERND
IPC: B01D39/14 , B01D53/86 , B01D53/94 , B01J23/00 , B01J23/76 , B01J35/04 , F01N3/08 , F01N3/10 , F01N3/20 , F01N13/02
Abstract: The process for operating a purification apparatus for gases comprises passing the gas stream through a filter body containing a catalyst and catalytically converting the pollutants. At low temperature, especially below 200 degrees C, more especially below 150 degrees C, hydrocarbons are stored in the filter body (2) and released above these temperatures, and pollutants are catalytically converted with the aid of the carrier material of the filter body. Also claimed is the purification apparatus consisting of a filter body (2) made from a carrier material which stores at least 20 vol.%, preferably at least 50 vol.% of the hydrocarbons at below 200 degrees C, especially below 150 degrees C. The carrier material effectively reduces the pollutants with the aid of a reductant, preferably hydrocarbons and/or carbon monoxide.
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公开(公告)号：DE59610128D1
公开(公告)日：2003-03-20
申请号：DE59610128
申请日：1996-11-02
Applicant: DAIMLER CHRYSLER AG , BASF AG
Inventor： HARTWEG MARTIN , SEIBOLD ANDREA , WALZ LEONHARD , FETZER THOMAS , MORSBACH BERND
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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公开(公告)号：DE59703453D1
公开(公告)日：2001-05-31
申请号：DE59703453
申请日：1997-12-17
Applicant: DAIMLER CHRYSLER AG , BASF AG
Inventor： FETZER THOMAS , MORSBACH BERND , KUMBERGER OTTO , HARTWEG MARTIN , ROITZHEIM ROLF-DIRC , SEIBOLD ANDREA , WALZ LEONHARD
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).
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公开(公告)号：CZ9801688A3
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
CPC classification number: B01J23/80 , B01D53/9418 , B01D2255/102 , B01D2255/20715 , B01D2255/20746 , B01D2255/20761 , B01D2255/405 , B01D2258/012 , B01J23/005 , Y10S502/524
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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
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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Patent Agency Ranking
公开(公告)号：DE19653200A1
公开(公告)日：1998-06-25
申请号：DE19653200
申请日：1996-12-19
Applicant: BASF AG , DAIMLER BENZ AG
Inventor： FETZNER THOMAS DR , MORSBACH BERND , KUMBERGER OTTO DR , HARTWEG MARTIN DR , WALZ LEONHARD DR , ROITZHEIM ROLF-DIRC DR , SEIBOLD ANDREA
Abstract: In accordance with the invention, for the reduction of NOx, in particular in burner gases, a catalyst is used consisting of: (a) 20-97 wt.% Al2O3, (b) 1-40 wt.% CuO, (c) 1-50 wt.% ZnO, (d) 1-40 wt.% Ag, (e) 0-2 wt.% Pt, (f) 0-20 wt.% oxides of rare earth metals, elements of the third subgroup of the periodic system or their mixtures, with relation to the total weight of components (a) to (e), which is 100 wt.% In this catalyst, up to half the weight of component (a) can be replaced by FE2O3, Cr2O3, Ga2O3 or their mixtures; up to half the weight of component (b) can be replaced by CoO; up to half the weight of component (c) can be replaced by MgO; up to half the weight of component (d) can be replaced by Au, and up to half the weight of component (e) can be replaced by Pd, Ru, Os, Ir, Rh, Re or their mixtures. Components (a), (b) and (c) form a spinel which can be doped with the components (d), (e) and (f).
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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
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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公开(公告)号：BR9714044A
公开(公告)日：2000-05-09
申请号：BR9714044
申请日：1997-12-17
Applicant: BASF AG , DAIMLER BENZ AG
Inventor： FETZER THOMAS , MORSBACH BERND , KUMBERGER OTTO , HARTWEG MARTIN , ROITZHEIM ROLF-DIRC , SEIBOLD ANDREA , WALZ LEONHARD
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).
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公开(公告)号：CZ9902243A3
公开(公告)日：2000-02-16
申请号：CZ224399
申请日：1997-12-17
Applicant: BASF AG , DAIMLER BENZ AG
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公开(公告)号：AU2846197A
公开(公告)日：1997-07-03
申请号：AU2846197
申请日：1996-12-11
Applicant: BASF AG , DAIMLER BENZ AG
Inventor： FETZER THOMAS , MORSBACH BERND , HARTWEG MARTIN , ROITZHEIM RALF-DIRC , SEIBOLD ANDREA , WALZ LEONHARD
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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