06153162 is referenced by 13 patents and cites 10 patents.

A process for the catalytic reduction of NO.sub.x, the reduction taking place in the presence of a catalyst which comprises

(a) from 20 to 97 wt % of A.sub.2 O.sub.3,

(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 Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3, Ga.sub.2 O.sub.3 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 NO.sub.x, especially in combustion off-gases, the components (a), (b) and (c) forming a spinel which is doped with the components (d), (e) and (f).

Title
Method for the reduction of nitrogen oxides
Application Number
9/331059
Publication Number
6153162
Application Date
June 16, 1999
Publication Date
November 28, 2000
Inventor
Leonhard Walz
Rastatt
DE
Andrea Seibold
Blaustein
DE
Rolf Dirc Roitzheim
Dornstadt
DE
Martin Hartweg
Erbach
DE
Otto Kumberger
Mannheim
DE
Bernd Morsbach
Ludwigshafen
DE
Thomas Fetzer
Speyer
DE
Agent
Keil & Weinkauf
Assignee
Daimler Benz Aktiengesellschaft
DE
BASF Aktiengesellschaft
DE
IPC
B01J 23/02
B01J 23/48
B01J 23/32
B01J 23/00
B01J 8/00
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