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Class Information
Number: 423/213.2
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Mixture is exhaust from internal-combustion engine > Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element
Description: Processes, in which the material used to treat the gaseous mixture is in the solid-state and comprises a transition element, or compound thereof, and which functions to (1) modify a component, or (2) attract and retain a component, or (3) react with and chemically change a component.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6395244 |
Storage catalyst |
May. 28, 2002 |
| 6387336 |
Method and device for selective catalytic NOx reduction |
May. 14, 2002 |
| 6379531 |
Zeolite SSZ-52 |
Apr. 30, 2002 |
| 6375910 |
Multi-zoned catalytic trap and methods of making and using the same |
Apr. 23, 2002 |
| 6365118 |
Reduction of NOx in the exhaust from leanOx internal combustion engines |
Apr. 2, 2002 |
| 6361754 |
Reducing no emissions from an engine by on-demand generation of ammonia for selective catalytic reduction |
Mar. 26, 2002 |
| 6358880 |
Support composition based on a cerium oxide, a zirconium oxide and a scandium or rare earth oxide and use for treating exhaust gas |
Mar. 19, 2002 |
| 6355220 |
Method for treating exhaust gas of internal combustion engines functioning with sulphur-containing fuel |
Mar. 12, 2002 |
| 6350421 |
Nitrogen oxide storage material and nitrogen oxide storing catalyst prepared therefrom |
Feb. 26, 2002 |
| 6338831 |
Storage material for sulfur oxides |
Jan. 15, 2002 |
| 6334986 |
Process for the selective catalytic reduction of the nitrogen oxides contained in a lean exhaust gas |
Jan. 1, 2002 |
| 6309616 |
Method for adsorbing and removing ethylene and method for purifying an exhaust gas |
Oct. 30, 2001 |
| 6297189 |
Sulfide catalysts for reducing SO2 to elemental sulfur |
Oct. 2, 2001 |
| 6294141 |
Emission control |
Sep. 25, 2001 |
| 6290922 |
Zoelite SSZ-47 |
Sep. 18, 2001 |
| 6287527 |
Method for controlling exhaust emission |
Sep. 11, 2001 |
| 6284210 |
Combustion catalyst and combustion process using such a catalyst |
Sep. 4, 2001 |
| 6274107 |
Zeolite-containing oxidation catalyst and method of use |
Aug. 14, 2001 |
| 6274106 |
Oxide gas absorbing arrangement and method |
Aug. 14, 2001 |
| 6267937 |
Heating of a storage trap |
Jul. 31, 2001 |
| 6267941 |
Catalyst system for deodorization of a mixture of sulfur compounds and compounds such as aldehydes, alcohols and/or hydrocarbons |
Jul. 31, 2001 |
| 6258335 |
Conversion of carbon dioxide from ice exhausts by fixation |
Jul. 10, 2001 |
| 6254842 |
Method for using a close coupled catalyst |
Jul. 3, 2001 |
| 6235254 |
Hybrid catalyst heating system with water removal for enhanced emissions control |
May. 22, 2001 |
| 6235255 |
Catalyst support having zeolite with high sodium back ion-exchange capacity and catalysts made therefrom |
May. 22, 2001 |
| 6235247 |
Apparatus for low temperature degradation of diesel exhaust and other incomplete combustion products of carbon-containing fuels |
May. 22, 2001 |
| 6221324 |
Process for the removal from gases of nitrogen oxides NOx by selective catalytic reduction (SCR) using ammonia over zeolite catalysts not causing the formation of nitrogen protoxide |
Apr. 24, 2001 |
| 6217837 |
Use of sol-gel processed alumina-based metal oxides for absorbing nitrogen oxides in oxidizing exhaust gas |
Apr. 17, 2001 |
| 6214305 |
Method and apparatus for the treatment of diesel exhaust gas |
Apr. 10, 2001 |
| 6214306 |
Composition based on zirconium oxide and cerium oxide, preparation method therefor and use thereof |
Apr. 10, 2001 |
| 6207604 |
.beta.-zeolite molecular sieve absorbent |
Mar. 27, 2001 |
| 6193942 |
Catalyst for decomposition of nitrogen oxides and method for purifying diesel engine exhaust gas by the use of the catalyst |
Feb. 27, 2001 |
| 6192676 |
Device for reducing the NOx content in the exhaust gas of an internal combustion engine |
Feb. 27, 2001 |
| 6183709 |
Process for separation of oxygen from an oxygen containing gas using oxygen selective sorbents |
Feb. 6, 2001 |
| 6180075 |
Exhaust gas catalyst |
Jan. 30, 2001 |
| 6174835 |
Exhaust gas purifying device and method for purifying exhaust gas |
Jan. 16, 2001 |
| 6171565 |
Process for the operation of a nitrogen oxides storage catalyst |
Jan. 9, 2001 |
| 6153161 |
Process for reducing NO.sub.x from exhaust fumes |
Nov. 28, 2000 |
| 6153162 |
Method for the reduction of nitrogen oxides |
Nov. 28, 2000 |
| 6153159 |
Method for purifying exhaust gases |
Nov. 28, 2000 |
| 6150299 |
Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification |
Nov. 21, 2000 |
| 6146602 |
Mesoporous oxide molecular sieves for absorbing nitrogen oxides in oxidizing engine exhaust gas |
Nov. 14, 2000 |
| 6143261 |
Catalytic reduction of nitrogen oxide emissions with MCM-49 and MCM-56 |
Nov. 7, 2000 |
| 6143272 |
Sol-gel processed metal-zirconia materials |
Nov. 7, 2000 |
| 6139813 |
NOx trapping by metal-zirconia materials during lean-burn automotive engine operation |
Oct. 31, 2000 |
| 6129898 |
NOx trap catalyst for lean burn engines |
Oct. 10, 2000 |
| 6103208 |
Adsorbent for ethylene, method for adsorbing and removing ethylene and method for purifying an exhaust gas |
Aug. 15, 2000 |
| 6103207 |
Treating diesel exhaust with a catalytic particulate mixture |
Aug. 15, 2000 |
| 6103660 |
Method of depositing catalytically active components on high-surface area support materials |
Aug. 15, 2000 |
| 6096682 |
Process for the production of a catalyst body for the catalytic treatment of gas, catalyst body and catalytic converter |
Aug. 1, 2000 |
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