Patent application number | Description | Published |
20100146935 | NOx STORAGE MATERIALS FOR SENSOR APPLICATIONS | 06-17-2010 |
20100266473 | BASE METAL CATALYSTS FOR THE OXIDATION OF CARBON MONOXIDE AND VOLATILE ORGANIC COMPOUNDS - A method for oxidizing carbon monoxide (CO) and volatile organic compounds (VOCS) comprises contacting a gas containing water vapor and said CO and VOCs with a catalyst composition comprising at least one base metal promoter and at least one base metal catalyst supported on an oxide support material comprising one or more of alumina, silica, zirconia, ceria, and titania, wherein the VOCs comprise one or more of methyl acetate, methane, methyl bromide, benzene, methanol, methyl ethyl ketone, butane, and butene. | 10-21-2010 |
20100267548 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 10-21-2010 |
20100290963 | TRANSITION METAL / ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-18-2010 |
20110182791 | CATALYSTS FOR THE REDUCTION OF AMMONIA EMISSION FROM RICH-BURN EXHAUST - A system for reducing ammonia (NH3) emissions includes (a) a first component comprising a first substrate containing a three-way catalyst, wherein the first component is disposed upstream of a second component comprising a second substrate containing an ammonia oxidation catalyst, wherein said ammonia oxidation catalyst comprises a small pore molecular sieve supporting at least one transition metal; and (b) an oxygen-containing gas input disposed between the components. For example, a CHA Framework Type small pore molecular sieve may be used. A method for reducing NH | 07-28-2011 |
20110250127 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 10-13-2011 |
20110281720 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 11-17-2011 |
20120093702 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 04-19-2012 |
20120122660 | OXIDATION CATALYST - An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface; (iii) at least one metal is present throughout the extruded solid body and in a higher concentration at a surface; (iv) at least one metal is present throughout the extruded solid body and in a coating layer(s) on a surface; or (v) a combination of (ii) and (iii). | 05-17-2012 |
20120134916 | 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 molecular sieve, the transition metal loading is less than about 1 wt %. | 05-31-2012 |
20120184429 | DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx - A catalyst for selective catalytic reduction of NO | 07-19-2012 |
20120189518 | DISORDERED MOLECULAR SIEVE SUPPORTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NOx - A catalyst for selective catalytic reduction of NO | 07-26-2012 |
20120201731 | ZEOLITE CATALYST CONTAINING METAL - Provided is a catalyst comprising (a) a zeolite material having a mean crystal size of at least about 0.5 μm, having a CHA framework that contains silicon and aluminum, and having a silica-to-alumina mole ratio (SAR) of about 10 to about 25; and (b) an extra-framework promoter metal (M) disposed in said zeolite material as free and/or exchanged metal, wherein the extra-framework promoter metal is copper, iron, and mixtures thereof, and is present in a promoter metal-to-aluminum atomic ratio (M:Al) of about 0.10 to about 0.24 based on the framework aluminum; and optionally comprising (c) at least about 1 weight percent of cerium in said zeolite material, based on the total weight of the zeolite, wherein said cerium is present in a form selected from exchanged cerium ions, monomeric ceria, oligomeric ceria, and combinations thereof, provided that said oligomeric ceria has a particle size of less than 5 μm. | 08-09-2012 |
20120213673 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 08-23-2012 |
20120233985 | APPARATUS COMPRISING LEAN BURN IC ENGINE AND AN EXHAUST SYSTEM THEREFOR - An apparatus comprises: (i) a lean burn internal combustion engine; (ii) an exhaust system for treating a flowing exhaust gas from the engine, which system comprising: (a) a first substrate monolith comprising a NOx adsorber catalyst (NAC); and (b) a catalysed soot filter (CSF) comprising a filter substrate; and (iii) means for enriching the exhaust gas to provide an enriched exhaust gas composition intermittently during normal lean running operation for removing sulfate adsorbed on the NAC, wherein the exhaust system comprises: (c) a compound located downstream of at least some of the NAC, which compound is effective to remove and/or convert at least some hydrogen sulfide in enriched exhaust gas derived from removing sulfate adsorbed on the NAC. | 09-20-2012 |
20120301378 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120301379 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt. | 11-29-2012 |
20120301380 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120301381 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 11-29-2012 |
20120308439 | COLD START CATALYST AND ITS USE IN EXHAUST SYSTEMS - A cold start catalyst is disclosed. The cold start catalyst comprises a zeolite catalyst and a supported platinum group metal catalyst. The zeolite catalyst comprises a base metal, a noble metal, and a zeolite. The supported platinum group metal catalyst comprises one or more platinum group metals and one or more inorganic oxide carriers. The invention also includes an exhaust system comprising the cold start catalyst. The cold start catalyst and the process result in improved NO | 12-06-2012 |
20130095012 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 04-18-2013 |
20130323146 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 12-05-2013 |
20140037523 | ZEOLITE CATALYST CONTAINING METAL - A catalyst composition is provided having a zeolite material of a CHA crystal structure and a silica to alumina mole ratio (SAR) of about 10 to about 25 and preferably having a mean crystal size of at least 1.0 microns; and a non-aluminum base metal (M), wherein said zeolite material contains said base metal in a base metal to aluminum ratio (M:Al) of about 0.10 to about 0.24. | 02-06-2014 |
20140079616 | CATALYSTS FOR THE REDUCTION OF AMMONIA EMISSION FROM RICH-BURN EXHAUST - A system for reducing ammonia (NH | 03-20-2014 |
20140170045 | PLATINUM GROUP METAL (PGM) CATALYST FOR TREATING EXHAUST GAS - Provided are catalysts comprising a small pore molecular sieve embedded with platinum group metal (PGM) and methods for treating lean burn exhaust gas using the same. | 06-19-2014 |
20140193327 | LOW PHOSPHORUS CHABAZITES - A catalyst composition is provided having a CHA crystal structure; about 0.5 to about 5.0 mol % phosphorus; and SiO | 07-10-2014 |
20140248203 | 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 of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 09-04-2014 |
20140322119 | SUPPORTED NOBLE METAL CATALYST FOR TREATING EXHAUST GAS - Provided is a method for oxidizing short-chain saturated hydrocarbons in a lean burn exhaust gas, the method involving contacting the exhaust gas with a palladium or palladium/platinum catalyst disposed on a rare-earth stabilized zirconia support. | 10-30-2014 |
20140356265 | Catalyzed Filter for Treating Exhaust Gas - Provided is a diesel particulate filter capable of removing soot from an exhaust gas while operating at low backpressure, the filter comprising (a) a wall-flow filter substrate having a mean pore size, an inlet side, an outlet side, and a porous interior between the inlet and outlet sides; and (b) a catalyst composition coated from the outlet side of the substrate, wherein the catalyst composition has a d | 12-04-2014 |
20140356266 | Catalyzed Filter for Treating Exhaust Gas - Provided is a diesel particulate filter capable of removing soot from an exhaust gas while operating at low backpressure, the filter comprising (a) a wall-flow filter substrate having a mean pore size, an inlet side, an outlet side, and a porous interior between the inlet and outlet sides; and (b) a catalyst composition coated from the inlet side of the substrate, wherein the catalyst composition has a d | 12-04-2014 |
20150037233 | AMMONIA SLIP CATALYST - Provided is an ammonia slip catalyst article having supported palladium in a top or upstream layer for oxidation of carbon monoxide and/or hydrocarbons, an SCR catalyst either in the top layer or in a separate lower or downstream layer, and an ammonia oxidation catalyst in a bottom layer. Also provided are methods for treating an exhaust gas using the catalyst article, wherein the treatment involves reducing the concentrations of ammonia and optionally carbon monoxide and/or hydrocarbons in the exhaust gas. | 02-05-2015 |
20150064074 | ZEIOLITE CATALYST CONTAINING METAL - A catalyst composition is provided wherein the composition includes a zeolite having a non-phosphorous CHA crystal structure and having a mean crystalline size of about 1 to about 5 microns; and at least one non-aluminum base metal present in an amount sufficient to achieve a NOx conversion of at least about 65% at a temperature of at least 450° C. | 03-05-2015 |
20150064085 | CO SLIP CATALYST AND METHOD OF USING - A CO slip catalyst, for treating an exhaust gas from a lean burn internal combustion engine, is disclosed. The CO slip catalyst comprises palladium and a ceria-containing material. The invention also includes a method for oxidizing excess CO in an exhaust gas, wherein the excess CO results from the periodic contact of an upstream catalyst under rich exhaust conditions. The method comprises contacting the excess CO in the exhaust gas with a CO slip catalyst at a temperature in the range of 100 to 700° C. | 03-05-2015 |
20150078968 | TRANSITION METAL/ZEOLITE SCR CATALYSTS - A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt. | 03-19-2015 |
20150078989 | ZEOLITE CATALYST CONTAINING METALS - Provided is catalyst material useful for the selective catalytic reduction of NOx in lean burn exhaust gas, wherein the catalyst material is a hydrothermally stable, low SAR aluminosilicate zeolite loaded with a synergistic combination of one or more transition metals, such as copper, and one or more alkali or alkaline earth metals, such as calcium or potassium. | 03-19-2015 |