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Class Information
Number: 423/239.2
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Nitrogen or nitrogenous component > Utilizing solid sorbent, catalyst, or reactant > Zeolite
Description: Process in which the treating material contains a zeolite.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7611623 |
Separation method using an ITQ-29 zeolite material |
Nov. 3, 2009 |
| 7597865 |
Nitrogen oxide removal catalyst system and nitrogen oxide removal method |
Oct. 6, 2009 |
| 7591987 |
Method and apparatus for treating ammonia-containing gas |
Sep. 22, 2009 |
| 7585477 |
Catalyst and method for catalytic reduction of nitrogen oxides |
Sep. 8, 2009 |
| 7541010 |
Silver doped catalysts for treatment of exhaust |
Jun. 2, 2009 |
| 7527776 |
Ammonia SCR catalyst and method of using the catalyst |
May. 5, 2009 |
| 7501105 |
NOx reduction catalyst having excellent low-temperature characteristics |
Mar. 10, 2009 |
| 7497942 |
Catalyst additives for the removal of NH.sub.3 and HCN |
Mar. 3, 2009 |
| 7485276 |
Method for the removal of No.sub.x and N.sub.2O from the tail gas in nitric acid production |
Feb. 3, 2009 |
| 7485271 |
Catalyst structure for treating NO.sub.x containing exhaust gas from a lean burn engine |
Feb. 3, 2009 |
| 7482303 |
Catalytic burning reaction |
Jan. 27, 2009 |
| 7462340 |
Method and device for reducing the NO.sub.X and N.sub.2O of gases |
Dec. 9, 2008 |
| 7459135 |
Method for the removal of NO.sub.x and catalyst therefor |
Dec. 2, 2008 |
| 7438876 |
Multi-stage heat absorbing reactor and process for SCR of NOx and for oxidation of elemental mercury |
Oct. 21, 2008 |
| 7438878 |
Selective catalytic reduction of N.sub.2O |
Oct. 21, 2008 |
| 7413720 |
Catalyst and method for reduction of nitrogen oxides |
Aug. 19, 2008 |
| 7405175 |
Catalyst and method for clarifying exhaust gas |
Jul. 29, 2008 |
| 7396517 |
Reduction of NOx emissions using a staged silver/alumina catalyst system |
Jul. 8, 2008 |
| 7396793 |
Exhaust gas purifying catalyst and process for purifying exhaust gas |
Jul. 8, 2008 |
| 7393804 |
Exhaust gas purifying catalyst and process for purification of exhaust gas |
Jul. 1, 2008 |
| 7393512 |
Denitrification method |
Jul. 1, 2008 |
| 7378069 |
Catalyst and method for reduction of nitrogen oxides |
May. 27, 2008 |
| 7368094 |
Plasma-assisted NO.sub.x reduction |
May. 6, 2008 |
| 7361320 |
Exhaust gas purification unit with reducing agent supply |
Apr. 22, 2008 |
| 7357904 |
Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-74 |
Apr. 15, 2008 |
| 7259121 |
Method of reducing the N.sub.2O content of gases and selected catalysts |
Aug. 21, 2007 |
| 7238332 |
Material and process for the filtration of nitric acid and NO.sub.2 from streams of air |
Jul. 3, 2007 |
| 7235221 |
NO.sub.x catalyst and method of suppressing sulfate formation in an exhaust purification system |
Jun. 26, 2007 |
| 7235222 |
Process for treating waste anesthetic gas |
Jun. 26, 2007 |
| 7226569 |
Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-56 |
Jun. 5, 2007 |
| 7182927 |
Hydrothermally stable metal promoted zeolite beta for NO.sub.x reduction |
Feb. 27, 2007 |
| 7175821 |
Reactor and process for reducing emissions of CO and NO.sub.x |
Feb. 13, 2007 |
| 7153810 |
Silver doped catalysts for treatment of exhaust |
Dec. 26, 2006 |
| 7141526 |
Exhaust gas purifying catalyst and process for purifying exhaust gas by use of the catalyst |
Nov. 28, 2006 |
| 7138097 |
Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-73 |
Nov. 21, 2006 |
| 7118722 |
Hydrothermally stable metal promoted zeolite beta for NO.sub.x reduction |
Oct. 10, 2006 |
| 7094722 |
NO.sub.x catalyst and method of suppressing sulfate formation in an exhaust purification system |
Aug. 22, 2006 |
| 7090811 |
Method of reducing NOx in diesel engine exhaust |
Aug. 15, 2006 |
| 7083767 |
Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-70 |
Aug. 1, 2006 |
| 7083765 |
Catalysts for lean burn engine exhaust abatement |
Aug. 1, 2006 |
| 7083766 |
Reduction of oxides of nitrogen in a gas stream using molecular sieve SSZ-71 |
Aug. 1, 2006 |
| 7078004 |
Diesel oxidation catalyst |
Jul. 18, 2006 |
| 7011801 |
Method for the simultaneous removal of nitrogen oxides and laughing gas from a gas stream containing nitrogen oxides and laughing gas |
Mar. 14, 2006 |
| 7005116 |
Process for reducing nitrogen oxides |
Feb. 28, 2006 |
| 6936232 |
Process and apparatus for removing NOx from engine exhaust gases |
Aug. 30, 2005 |
| 6893997 |
Exhaust gas purifying catalyst and method for purifying exhaust gas |
May. 17, 2005 |
| 6890501 |
Method for simultaneously abating nitric oxides and nitrous oxides in gases containing them |
May. 10, 2005 |
| 6887444 |
Exhaust gas purifying catalyst |
May. 3, 2005 |
| 6872372 |
Reduction of N2O emissions |
Mar. 29, 2005 |
| 6843971 |
Process and catalyst for reducing nitrogen oxides |
Jan. 18, 2005 |
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