-
公开(公告)号：JPH09225267A
公开(公告)日：1997-09-02
申请号：JP35936296
申请日：1996-12-12
Applicant: DAIMLER BENZ AG , BASF AG
Inventor： HARTWEG MARTIN , ROITZHEIM ROLF-DIRC , SEIBOLD ANDREA , WALZ LEONHARD , 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: PROBLEM TO BE SOLVED: To improve the purifying ability of a harmful substance at an initial stage in the operation of a purifying device for a gas of a gasoline engine operated in stoichionetry, especially for an exhaust gas. SOLUTION: At the time of converting the harmful substance with a catalyst by exposing a filter body having the catalyst, at a lower temp. than a reaction temp. of a purifying vessel, especially
-
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
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.
-
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
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.
-
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.%.
-
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).
-
Patent Agency Ranking
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
-
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.%.
-
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.%.
-
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.
-
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).
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.021 seconds)
