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Class Information
Number: 423/239.1
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Nitrogen or nitrogenous component > Utilizing solid sorbent, catalyst, or reactant
Description: Process in which the treating material is a solid and functions to (a) modify a component, (b) attract and retain a component, or (c) react with and chemically change a component.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6261528 |
Hydrogen purification using metal hydride getter material |
Jul. 17, 2001 |
| 6258336 |
Method and apparatus for NOx reduction in flue gases |
Jul. 10, 2001 |
| 6237368 |
Process for the regulating or controlling the NOx content of exhaust gases given off during the operating of glass melting furnaces with several burners run alternately |
May. 29, 2001 |
| 6235255 |
Catalyst support having zeolite with high sodium back ion-exchange capacity and catalysts made therefrom |
May. 22, 2001 |
| 6231824 |
Removal of nitric oxide from gas streams |
May. 15, 2001 |
| 6232254 |
Method of cleaning and/or regenerating wholly or partially de-activated catalysts for stack-gas nitrogen scrubbing |
May. 15, 2001 |
| 6228799 |
Composition based on cerium oxide and on zirconium oxide with a high specific surface and a high oxygen storage capacity, process of preparation and use in catalysis |
May. 8, 2001 |
| 6224839 |
Method for the treatment of activated carbonaceous material containing alkali/alkaline earth metals for the reduction of NOx from flue gas |
May. 1, 2001 |
| 6221804 |
Catalyst for purifying exhaust gas and manufacturing method thereof |
Apr. 24, 2001 |
| 6217837 |
Use of sol-gel processed alumina-based metal oxides for absorbing nitrogen oxides in oxidizing exhaust gas |
Apr. 17, 2001 |
| 6217838 |
Process for reducing emissions of oxides of nitrogen in a medium which is super-stoichiometric in oxidizing agents |
Apr. 17, 2001 |
| 6214307 |
Exhaust gas purifying catalyst and exhaust gas purifying method |
Apr. 10, 2001 |
| 6214308 |
Process for removal of nitric oxides and sulfur oxides from flue gases |
Apr. 10, 2001 |
| 6210649 |
Metal oxide catalysts for nitric oxide reduction |
Apr. 3, 2001 |
| 6203770 |
Urea pyrolysis chamber and process for reducing lean-burn engine NOx emissions by selective catalytic reduction |
Mar. 20, 2001 |
| 6197268 |
Reduction of toxic substances in waste gas emissions |
Mar. 6, 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 |
| 6190628 |
Method for injecting NOx inhibiting liquid reagent into the flue gas of a boiler in response to a sensed temperature |
Feb. 20, 2001 |
| 6191068 |
Method and compositions for stabilization of heavy metals, acid gas removal and pH control in contaminated matrices |
Feb. 20, 2001 |
| 6176079 |
Process and apparatus for reducing nitrogen-oxide emissions in exhaust gas |
Jan. 23, 2001 |
| 6174504 |
Methods of control of nitrogen oxide and hydrocarbon emissions from small engines |
Jan. 16, 2001 |
| 6174835 |
Exhaust gas purifying device and method for purifying exhaust gas |
Jan. 16, 2001 |
| 6171372 |
Nitrogen dioxide absorbent |
Jan. 9, 2001 |
| 6171565 |
Process for the operation of a nitrogen oxides storage catalyst |
Jan. 9, 2001 |
| 6171566 |
Selective catalytic reduction for the removal of nitrogen oxides and catalyst body thereof |
Jan. 9, 2001 |
| 6165429 |
Exhaust gas purifying catalyst and exhaust gas purifying method |
Dec. 26, 2000 |
| 6165430 |
Method for treating diesel engine exhaust gas |
Dec. 26, 2000 |
| 6162409 |
Process for removing No.sub.x and So.sub.x from exhaust gas |
Dec. 19, 2000 |
| 6153161 |
Process for reducing NO.sub.x from exhaust fumes |
Nov. 28, 2000 |
| 6153162 |
Method for the reduction of nitrogen oxides |
Nov. 28, 2000 |
| 6153552 |
Methods for making catalysts |
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 |
| 6146605 |
Combined SCR/SNCR process |
Nov. 14, 2000 |
| 6146606 |
Reactive agent and process for decomposing nitrogen fluoride |
Nov. 14, 2000 |
| 6147027 |
Alloy catalyst and process for producing the same |
Nov. 14, 2000 |
| 6143167 |
NO.sub.x reduction compositions for use in FCC processes |
Nov. 7, 2000 |
| 6143261 |
Catalytic reduction of nitrogen oxide emissions with MCM-49 and MCM-56 |
Nov. 7, 2000 |
| 6143262 |
Process for removing nitrous oxide (N.sub.2 O) |
Nov. 7, 2000 |
| 6143272 |
Sol-gel processed metal-zirconia materials |
Nov. 7, 2000 |
| 6143687 |
Denitration catalyst, process for preparing the same, and exhaust gas purification method |
Nov. 7, 2000 |
| 6139813 |
NOx trapping by metal-zirconia materials during lean-burn automotive engine operation |
Oct. 31, 2000 |
| 6136283 |
Removal of nitrogen oxide from gas streams |
Oct. 24, 2000 |
| 6129834 |
NO.sub.x reduction compositions for use in FCC processes |
Oct. 10, 2000 |
| 6129898 |
NOx trap catalyst for lean burn engines |
Oct. 10, 2000 |
| 6126912 |
Process and catalyst comprising at least one EU-1 and/or NU-86 and/or NU-87 zeolite for reducing oxides of nitrogen in an oxidizing medium |
Oct. 3, 2000 |
| 6120580 |
Method for testing systems designed for NO.sub.x reduction in the combustion of carbonaceous fuels |
Sep. 19, 2000 |
| 6120746 |
Exhaust gas cleaning catalyst component, process of production of the same and process for production of exhaust gas cleaning catalyst member |
Sep. 19, 2000 |
| 6117405 |
Process for removing nitrogen oxides from flue gases |
Sep. 12, 2000 |
| 6113870 |
Closed loop no.sub.x reduction |
Sep. 5, 2000 |
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