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Class Information
Number: 502/515
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Specific contaminant removal
Description: Collection of art directed to regenerating or rehabilitating a composition of this class and concerned primarily with freeing the composition of some specific material usually called a "poison".

Sub-classes under this class:

Class Number Class Name Patents
502/518 Carbonaceous contaminant 24
502/516 Metal contaminant removal 115
502/517 Sulfur or sulfur compound removal 158

Patents under this class:
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Patent Number Title Of Patent Date Issued
8680006 Saturation of ammonia storage materials in containers Mar. 25, 2014
8513157 Deactivation resistant photocatalysts Aug. 20, 2013
8227378 Arsenic sorbent for remediating arsenic-contaminated material Jul. 24, 2012
8187991 Methods for regeneration of adsorbent material May. 29, 2012
8163668 Inorganic electrolyte setting agent capable of rendering heavy metal ion nonhazardous and method of treatment for utilization as resource therewith Apr. 24, 2012
7943544 Method of recycling spent flue gas denitration catalyst May. 17, 2011
7846861 Process for regenerating a catalyst Dec. 7, 2010
7816295 Hydrothermally stable Ag-zeolite traps for small olefin hydrocarbon molecules Oct. 19, 2010
7300899 Lithium exchanged zeolite X adsorbent blends Nov. 27, 2007
7045485 NO.sub.x reduction composition for use in FCC processes May. 16, 2006
7008896 Situ formed anionic clay-containing bodies Mar. 7, 2006
6490984 Method of making flue gas harmless Dec. 10, 2002
6414109 Process for producing tetrahydrofuran polymer Jul. 2, 2002
6190430 Method for producing hydrogen-containing gas for fuel cell Feb. 20, 2001
5972826 Densified carbon black adsorbent and a process for adsorbing a gas with such an adsorbent Oct. 26, 1999
5958479 Antioxidant/desiccant packet and method for use thereof Sep. 28, 1999
5854079 Method for detection of performance reduction of exhaust gas purification catalyst Dec. 29, 1998
5648308 Process for upgrading metallocene catalysts Jul. 15, 1997
5446000 Treatment for virgin phosphorous/vanadium oxidation catalysts Aug. 29, 1995
5186727 Mixed-metal oxide absorbent for carbon dioxide and water removal Feb. 16, 1993
5120897 Isoparaffin/olefin alkylation Jun. 9, 1992
5064526 Method for the base-catalyzed decomposition of halogenated and non-halogenated organic compounds in a contaminated medium Nov. 12, 1991
5039350 Method for the decomposition of halogenated organic compounds in a contaminated medium Aug. 13, 1991
5006495 Fluid catalytic cracking regeneration Apr. 9, 1991
4994424 Catalytic cracking process with improved flow in swirl regenerator Feb. 19, 1991
4971682 Recovery of co-adsorbed hydrocarbons from molecular sieve adsorption units Nov. 20, 1990
4849095 Process for hydrogenating a hydrocarbonaceous charge stock Jul. 18, 1989
4828680 Catalytic cracking of hydrocarbons May. 9, 1989
4742032 Neutralization of spent solid phosphoric acid catalyst May. 3, 1988
4729975 Method for regenerating a denitration catalyst for exhaust gases from coal-burning apparatus Mar. 8, 1988
4721582 Toxic gas absorbent and processes for making same Jan. 26, 1988
4719007 Process for hydrotreating a hydrocarbonaceous charge stock Jan. 12, 1988
4686198 Method for regenerating adsorbent mixture of alumina and zeolite for adsorption of ammonia Aug. 11, 1987
4659684 Removal of arsenic, vanadium and/or nickel compounds from spent catecholated polymer Apr. 21, 1987
4656148 Method for the reactivation of a catalyst used for removal of nitrogen oxides Apr. 7, 1987
4656147 Method for recovering denitrating catalyst for ammonia catalytic reduction Apr. 7, 1987
4649127 Process for hydrogenative reactivation of spent catalysts Mar. 10, 1987
4615991 Method for recovering denitrating catalyst Oct. 7, 1986
4597956 Treatment process for removing fluoride impurities from aluminosilicates Jul. 1, 1986
4572903 Method for reactivating catalysts used for removing nitrogen oxides with steam Feb. 25, 1986
4569754 Selective vaporization process Feb. 11, 1986
4560670 Method for regeneration of catalysts by removal of nitrogen poisons Dec. 24, 1985
4550090 Regeneration of ZSM-5 type catalyst with a source of alkali or alkaline earth metal cations or ammonia Oct. 29, 1985
4548911 Regeneration of phosphorus poisoned automotive catalysts Oct. 22, 1985
4443354 Sorbent material for reducing formaldehyde emission Apr. 17, 1984
4235704 Method of reducing oxides of nitrogen concentration in regeneration zone flue gas Nov. 25, 1980
4212852 Method of deodorizing gas containing hydrogen sulfide and ammonia and/or amines Jul. 15, 1980
4206038 Hydrogen recovery from gaseous product of fluidized catalytic cracking Jun. 3, 1980
4199554 Method of and apparatus for removing nitrogen oxides from the gases containing nitrogen oxides Apr. 22, 1980
4098677 Catalytic cracking process with CO.sub.2 -stripped regenerated catalyst Jul. 4, 1978

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