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US20110165051 Process Of Direct Copper Exchange Into Na+-Form Of Chabazite Molecular Sieve, And Catalysts, Systems And Methods  
Disclosed are processes for the preparation of copper containing molecular sieves with the CHA structure wherein the copper is exchanged into the Na+-form of the Chabazite, using a liquid copper...
US20120189518 DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx  
A catalyst for selective catalytic reduction of NOx having one or more transition metals selected from Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir, Pt, and mixtures...
US20140314649 PROCESS FOR REMOVING NITROGEN OXIDES FROM GAS USING MICROWAVE CATALYTIC REACTION BY MICROWAVE CATALYSIS  
A method for removing nitrogen-oxides by microwave assisted catalysis, including: 1) charging a catalyst capable of absorbing and interacting with microwave into a reaction tube of a reactor...
US20120258032 CATALYZED FILTER FOR TREATING EXHAUST GAS  
Provided is a wall-flow filter coated with an SCR catalyst composition, wherein the catalyst composition contains transition metal promoted molecular sieve crystals, and wherein (i) the crystals...
US20110165052 Process for Preparation of Copper Containing Molecular Sieves With the CHA Structure, Catalysts, Systems and Methods  
Disclosed are processes for the preparation of copper containing molecular sieves with the CHA structure having a silica to alumina mole ratio greater than about 10, wherein the copper exchange...
US20120208691 Copper Containing Levyne Molecular Sieve For Selective Reduction Of NOx  
Aspects of the present invention relates to a copper containing Levyne molecular sieve having a silica to alumina mole ratio less than 30 and a Cu:Al atomic ratio less than 0.45, wherein the...
US20120014866 Copper Containing ZSM-34, OFF And/Or ERI Zeolitic Material For Selective Reduction Of NOx  
Described is a copper containing ZSM-34, OFF and/or ERI zeolitic material having a silica to alumina mole ratio ranging from about 4 to about 50 and a copper content, reported as CuO, ranging from...
US20120014867 Copper Containing ZSM-34, OFF And/Or ERI Zeolitic Material For Selective Reduction Of NOx  
Described is a copper containing ZSM-34, OFF and/or ERI zeolitic material having a silica to alumina mole ratio ranging from about 4 to about 50 and a copper content, reported as CuO, ranging from...
US20120014865 Copper Containing ZSM-34, OFF And/Or ERI Zeolitic Material For Selective Reduction Of NOx  
Described is a copper containing ZSM-34, OFF and/or ERI zeolitic material having a silica to alumina mole ratio ranging from about 4 to about 50 and a copper content, reported as CuO, ranging from...
US20140072508 Method for Transforming Nitrogen-Containing Compounds  
The invention relates to a method for the selective catalytic transformation of nitrogen-containing compounds. The transformation relates to the selective catalytic reduction (SCR) of nitrogen...
US20120269719 LARGE CRYSTAL, ORGANIC-FREE CHABAZITE, METHODS OF MAKING AND USING THE SAME  
There is disclosed a method to synthesize microporous crystalline material comprising a metal containing chabazite having a crystal size greater than 0.5 microns and a silica-to-alumina ratio...
US20150203357 NOVEL METHODS FOR PRODUCING CRYSTALLINE MICROPOROUS SOLIDS WITH A NEW CIT-7 TOPOLOGY AND COMPOSITIONS DERIVED FROM THE SAME  
This disclosure relates to new crystalline microporous solids (including silicate- and aluminosilicate-based solids), the compositions comprising 8 and 10 membered inorganic rings, particularly...
US20130034484 REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-28  
The invention relates generally to molecular sieve SSZ-28 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine.
US20130034483 REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-25  
The invention relates generally to molecular sieve SSZ-25 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine.
US20130034482 REDUCTION OF OXIDES OF NITROGEN IN A GAS STREAM USING MOLECULAR SIEVE SSZ-23  
The invention relates generally to molecular sieve SSZ-23 and its use in the reduction of oxides of nitrogen in a gas stream such as the exhaust from an internal combustion engine.
US20130149225 Process and Apparatus for Eliminating NOx and N2O  
A process for removing N2O and NOx from offgases by catalytic decomposition of N2O by means of iron-containing zeolite catalysts and catalytic reduction of the NOx by means of reducing agents, the...
US20140248203 Small Pore Molecular Sieve Supported Copper Catalysts Durable Against Lean/Rich Aging for the Reduction of Nitrogen Oxides  
A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size...
US20110281720 SMALL PORE MOLECULAR SIEVE SUPPORTED COPPER CATALYSTS DURABLE AGAINST LEAN/RICH AGING FOR THE REDUCTION OF NITROGEN OXIDES  
A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size...
US20130236382 ZEOLITE SCR CATALYSTS WITH IRON OR COPPER  
Cu/mordenite catalysts were found to be highly active for the SCR of NO with NH3 and exhibited high resistance to alkali poisoning. Redox and acidic properties of Cu/mordenite were well preserved...
US20110044873 Fabrication Method of Zeolite Honeycomb Type Catalyst for Reducing Nitrogen Oxide  
The present invention relates to conversion of exhaust gas containing nitrogen oxide (NOx) such as NO, NO2 and N2O into N2 and H2O through catalytic reaction with injection of a reducing agent...
US20140193327 LOW PHOSPHORUS CHABAZITES  
A catalyst composition is provided having a CHA crystal structure; about 0.5 to about 5.0 mol % phosphorus; and SiO2 and Al2O3 in a mole ratio of about 5 to about 40. The catalyst composition is...
US20150064088 ZEOLITE BLEND CATALYSTS FOR TREATING EXHAUST GAS  
Provided is an improved catalyst for treating exhaust gas, particularly for selectively reducing NOx, and methods for using the same, wherein the catalyst includes a blend of a transition metal...
US20100266471 EXHAUST AFTERTREATMENT SYSTEM AND METHOD OF TREATING EXHAUST GAS  
A diesel exhaust aftertreatment system and method are provided. The system includes a lean NOx trap for reducing NOx and a transition metal-exchanged zeolite booster catalyst positioned downstream...
US20140363359 DEVICE AND METHOD FOR ELIMINATING NOX AND N2O  
A device and a method are described for lowering the content of NOx and N2O in gases. The device comprises: A) a container (1) and, arranged therein, B) two reaction steps connected one after the...
US20110070134 PROCESS AND CATALYST SYSTEM FOR SCR OF NOx  
Process for reducing nitrogen oxides to nitrogen in an exhaust gas comprising passing the exhaust gas in the presence of a reducing agent through a catalyst system comprising at least two catalyst...
US20100303699 METHOD OF REMOVING N20 FROM WASTE GAS  
The invention provides a N2O removal method for a waste gas which is capable of stably decomposing and removing N2O even if the steam concentration in the waste gas is fluctuated. N2O is reduced...
US20110020204 Chabazite Zeolite Catalysts Having Low Silica to Alumina Ratios  
Disclosed are zeolite catalysts having the CHA crystal structure with a low silica to alumina ratio, as well as articles and systems incorporating the catalysts and methods for their preparation...
US20090263304 CATALYST FOR REMOVAL OF NITROGEN OXIDE AND METHOD FOR REMOVAL OF NITROGEN OXIDE  
A porous material having fine holes with controlled diameters and a catalyst having an active ingredient supported in the fine holes in the porous material are used. According to a first...
US20120134916 HIGH-TEMPERATURE SCR CATALYST  
A catalyst comprising: (a) a microporous crystalline molecular sieve comprising at least silicon, aluminium and phosphorous and having an 8-ring pore size; and (b) a transition metal loaded in the...
US20130202524 Iron- And Copper-Containing Zeolite Beta From Organotemplate-Free Synthesis And Use Thereof In The Selective Catalytic Reduction Of NOx  
Provided is a process for the production of a zeolitic material having a BEA-type framework structure comprising YO2 and X2O3. The process comprises the steps of (1) preparing a mixture comprising...
US20130280160 CHABAZITE-TYPE ZEOLITE AND METHOD FOR PRODUCING SAME, COPPER LOADED LOW-SILICA ZEOLITE AND NOX REDUCTIVE REMOVAL CATALYST CONTAINING THE ZEOLITE, AND METHOD OF NOX REDUCTIVE REMOVAL USING THIS CATALYST  
The chabazite-type zeolite of the present invention has a SiO2/Al2O3 molar ratio of less than 15, and an average particle size from 1.0 μm to 8.0 μm. The chabazite-type zeolite of the present...
US20100296992 Honeycomb Catalyst And Catalytic Reduction Method  
Honeycomb catalyst structures and methods of using them, where the structures have honeycomb channel walls of selective catalytic reduction catalyst, the channel walls occupy at least 20% of the...
US20110286914 NOVEL METAL-CONTAINING ZEOLITE BETA FOR NOx REDUCTION AND METHODS OF MAKING THE SAME  
There is disclosed an organic-free, metal-containing zeolite Beta with a silica-to-alumina ratio (SAR) ranging from 5 and 20, and a metal content of at least 0.5 wt. %. There is also disclosed a...
US20090048095 NOVEL IRON-CONTAINING ALUMINOSILICATE ZEOLITES AND METHODS OF MAKING AND USING SAME  
There is disclosed iron-containing aluminosilicate zeolites having both framework iron and iron cations on the ion-exchange sites. There is also disclosed a direct synthesis method of making an...
US20120207669 NOVEL METALLOSILICATES, PROCESSES FOR PRODUCING THE SAME, NITROGEN OXIDE REMOVAL CATALYST, PROCESS FOR PRODUCING THE SAME, AND METHOD FOR REMOVING NITROGEN OXIDE WITH THE SAME  
The invention relates to: a β-type iron silicate which has a fluorine content not more than 400 ppm by weight on a dry basis and in which the crystal grains have a truncated square bipyramidal...
US20120244066 Process For The Preparation Of Zeolites Having CHA Structure  
The present invention relates to a process for the preparation of zeolites having CHA framework structure and a composition comprising the molar ratio (n SiO2):X2O3, wherein X is a trivalent...
US20140044636 CATALYTIC REDUCTION OF NOx WITH HIGH ACTIVITY CATALYSTS  
Methods and systems for selective catalytic reduction of NOx with an activated-carbon-supported metal catalyst at an operating temperature of between about between about 500° C. and about 750° C....
US20050042159 Using molecular sieve SSZ-65 for reduction of oxides of nitrogen in a gas stream  
The present invention relates to new crystalline molecular sieve SSZ-65 prepared using 1-[1-(4-chlorophenyl)-cyclopropylmethyl]-1-ethyl-pyrrolidini um or...
US20110158877 METHOD FOR THE DECOMPOSITION OF N2O, CATALYST FOR IT, AND THE PREPARATION OF THIS CATALYST  
A method for the catalytic decomposition of N2O in an N2O- and NOx-containing gas in the presence of a catalyst, wherein the catalyst contains a zeolite that has been loaded with a first metal...
US20100209327 STRUCTURED SCR CATALYST FOR THE REDUCTION OF NITROGEN OXIDES IN THE EXHAUST GAS FROM LEAN-BURN ENGINES USING AMMONIA AS REDUCING AGENT  
The reductive removal of nitrogen oxides from the exhaust gas from internal combustion engines operated predominantly under lean conditions takes place in a selective catalytic reduction (SCR) of...
US20130089483 Cu-CHA/Fe-BEA Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams  
The present invention relates to a catalyst, which may be used in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the BEA structure type, one or more zeolites...
US20110312486 Alkali-Free Synthesis of Zeolitic Materials of the LEV-Type Structure  
Described is a process for the production of a zeolitic material having an LEV-type framework structure comprising YO2 and optionally comprising X2O3, wherein said process comprises (1) preparing...
US20100092362 HIGH SILICA CHABAZITE FOR SELECTIVE CATALYTIC REDUCTION, METHODS OF MAKING AND USING SAME  
There is disclosed a microporous crystalline material comprising a metal containing chabazite having a crystal size greater than 0.5 microns and a silica-to-alumina ratio (SAR) greater than 15,...
US20070081934 METHOD FOR IMPROVING THE EFFICIENCY OF REDUCING NOX IN MOTOR VEHICLES  
The invention relates to a method for reducing NOx in exhaust gas flows of a motor vehicle, by means of a catalyst. The method is characterized in that an NOx absorbing material is provided in the...
US20130004398 Ferrous Zeolite, Method for Producing Ferrous Zeolites, and Method for Catalytically Reducing Nitrous Oxides  
Described is an iron-containing zeolite wherein the number of iron sites, based on the zeolite, is greater than the number of cationic positions in the zeolite. Also described is an...
US20070077189 CATALYST FOR IMPROVING THE EFFICACY OF NOx REDUCTION IN MOTOR VEHICLES  
The invention relates to a catalyst for purifying NOX in the flow of exhaust gas of motor vehicles, and is characterized in that the catalyst contains modified clay minerals selected from the...
US20070196258 Desulfurizer for fuel gas for fuel cell and desulfurization method using the same  
A desulfurizer for fuel gas for a fuel cell includes: a first adsorption tank including an adsorber having selective adsorption capacity for a thiophene-based compound and a second adsorption tank...
US20120087851 P/S-TM-COMPRISING ZEOLITES FOR DECOMPOSITION OF N2O  
The present invention relates to the use of a zeolite catalyst comprising at least one transition metal and in addition sulfur and/or phosphorus atoms for reducing the content of nitrogen oxides...
US20110274607 VANADIA-SUPPORTED ZEOLITES FOR SCR OF NO BY AMMONIA  
The catalytic behaviour of vanadia-supported zeolite catalysts with different SiO2/Al2O3 ratios was tested for the SCR of NO with ammonia. The SCR activity was found to be directly correlated to...
US20150110711 PROCESS FOR THE DIRECT SYNTHESIS OF CU-SAPO-34  
Process for the direct synthesis of Cu-SAPO-34 comprising at least the following steps: preparation of a mixture containing water, at least one silicon source, at least one Al source, at least one...

Matches 1 - 50 out of 101 1 2 3 >