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US20150010451 CATALYTIC REDUCTION OF NOx  
A system for NOx reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of NO to NO2, particulate filter, a source of...
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...
US20120275978 System for Reducing NOx in Exhaust  
A system and method for NOx reduction is described, with a catalytic unit including a first zeolite catalyst with a first NOx conversion performance in a first temperature range and a second NOx...
US20110044871 COATING COMPOSITION FOR DIESEL OXIDATION CATALYSTS  
The invention relates to a coating composition for diesel oxidation catalysts or a combination of diesel oxidation catalysts and diesel particle filters, said coating composition comprising a...
US20140271429 Zoned Catalyst For Diesel Applications  
An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a...
US20150258496 Hybrid PGM-ZPGM TWC Exhaust Treatment Systems  
Hybrid PGM-ZPGM three-way catalyst (TWC) exhaust treatment systems are disclosed. The hybrid PGM-ZPGM TWC systems include a PGM close-coupled catalytic converter followed by an underfloor...
US20130202509 DIESEL OXIDATION CATALYST  
The present invention relates to a catalytically active material consisting of an inner core (1) and an outer shell (2) surrounding this core, the core being formed from palladium and gold fixed...
US20110286900 PGM-Zoned Catalyst for Selective Oxidation of Ammonia in Diesel Systems  
Platinum group metal zoned ammonia oxidation catalytic articles and methods of making are described. Also described are emissions treatment systems and methods of treating an exhaust stream...
US20110120087 Apparatus with Catalyst for the Reduction of Nitrogen Dioxide (NO2) to Nitric Oxide (NO) by Chemical Means in a Diesel Catalytic Support  
In setting tighter emissions standards for nitrogen oxides, legislative bodies limit the amount of nitrogen dioxide (NO2) permitted in exhaust. The disclosed catalysts can be coated on a support...
US20110020201 Oxygen Storage Catalyst With Decreased Ceria Reduction Temperature  
Catalysts, systems and methods for abating emissions in an exhaust stream are provided. Systems comprising a transition metal oxide stabilized oxygen storage catalyst are described. The emissions...
US20150217282 PGM CATALYST FOR TREATING EXHAUST GAS  
Provided are catalysts comprising a small pore molecular sieve embedded with PGM and methods for treating lean burn exhaust gas using the same.
US20150125371 THREE-WAY-CATALYST SYSTEM  
The present invention describes a three-way-catalyst system comprising a first three-way catalyst on an inert catalyst support which is a double-layer catalyst comprising a first layer on the...
US20110212008 Catalyzed Soot Filter  
Described is a catalyzed soot filter wherein the inlet coating of the filter comprises an oxidation catalyst comprising platinum (Pt) and optionally palladium (Pd), wherein the outlet coating of...
US20130142714 DIESEL OXIDATION CATALYSTS, SYSTEMS AND METHODS OF TREATMENT  
Diesel oxidation catalysts comprising a first washcoat layer including a platinum group metal impregnated on a promoted non-zeolitic support are described. The promoter is one or more of tin,...
US20140234190 NOx TRAP COMPOSITION  
A method to produce a NOx trap composition, and its use in a NOx trap and in an exhaust system for internal combustion engines, is disclosed. The NOx trap composition is produced by heating an...
US20150251136 Formaldehyde Emission Reduction in Natural Gas Fired Reciprocating Internal Combustion Engines (RICE)  
Exhaust from an NG fired stationary or non-stationary RICE, such as, for example, a lean burn RICE, is directed to a first oxidation catalyst, then to a second oxidation catalyst. The second...
US20110165046 System For Remediating Emissions And Method of Use  
One aspect of the present invention relates to a system for remediating emissions using a hybrid oxidation catalyst system. The hybrid oxidation catalyst system includes a noble metal oxidation...
US20150139875 METHOD FOR PREVENTING THE CONTAMINATION BY PLATINUM OF AN SCR CATALYST  
The invention relates to a method for preventing the contamination by platinum of an SCR catalyst in an exhaust-gas treatment system, said system comprising an oxidation catalyst containing...
US20150064085 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...
US20150157982 NOBLE METAL-MOLECULAR SIEVE CATALYSTS  
Exhaust gas catalysts are disclosed. One exhaust gas catalyst comprises a noble metal and a molecular sieve, and has an infrared spectrum having a characteristic absorption peak from 750 cm−1 to...
US20140044629 METHOD FOR TREATING A GAS CONTAINING NITROGEN OXIDES (NOx) USING A COMPOSITION COMPRISING ZIRCONIUM, CERIUM AND NIOBIUM AS A CATALYST  
The invention relates to a method for treating a gas containing nitrogen oxides (NOx), in which an NOx-reduction reaction is carried out using a nitrogen-containing reducing agent, which invention...
US20130149223 EXHAUST SYSTEM FOR A LEAN-BURN INTERNAL COMBUSTION ENGINE INCLUDING SCR CATALYST  
An exhaust system 20 for an internal combustion engine comprises a) a first catalysed substrate monolith 12 comprising a first washcoat coating disposed in a first washcoat zone 16 of the...
US20130287658 NOx TRAP COMPOSITION  
A NOx trap composition, and its use in an exhaust system for internal combustion engines, is disclosed. NOx trap composition comprises a platinum group metal, barium, cobalt, and a...
US20140271427 Catalyst Materials For No Oxidation  
A catalyst material for the oxidation of NO comprising a catalyst carrier including a ceria-alumina support having platinum and optionally palladium dispersed on the support is described. When...
US20140105799 EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE  
A method for purifying exhaust gas of an internal combustion engine, including chemically reducing NOx that is contained in the exhaust gas when a concentration of hydrocarbons flowing into an...
US20120121486 FILTER COMPRISING COMBINED SOOT OXIDATION AND NH3-SCR CATALYST  
A wall-flow filter for filtering particulate matter from a flowing exhaust gas comprises a catalyst for catalysing both the conversion of solid carbon in the particulate matter by oxygen and the...
US20120328500 HIGHLY ACIDIC COMPOSITIONS COMPRISING ZIRCONIUM AND SILICON OXIDES AND AN OXIDE OF AT LEAST ONE OTHER ELEMENT SELECTED FROM AMONG TITANIUM, ALUMINUM, TUNGSTEN, MOLYBDENUM, CERIUM, IRON, TIN, ZINC, AND MANGANESE  
Compositions useful for treating the exhaust gases of diesel engines contain zirconium oxide, silicon oxide and at least one oxide of at least one element M selected from among titanium, aluminum,...
US20140072494 Treatment of Cold Start Engine Exhaust  
The present invention relates to a process for reducing cold start emissions in an exhaust gas stream by contacting the exhaust stream with a combination of molecular sieves comprising (1) a small...
US20150165422 Manganese-Containing Diesel Oxidation Catalyst  
An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a...
US20140186244 CATALYSED SUBSTRATE MONOLITH  
A catalysed substrate monolith 12 for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith 12 comprising a first washcoat coating 16...
US20130149221 CATALYSED SUBSTRATE MONOLITH  
A catalysed substrate monolith 12 for use in treating exhaust gas emitted from a lean-burn internal combustion engine, which catalysed substrate monolith 12 comprising a first washcoat coating 16...
US20150165423 Manganese-Containing Diesel Oxidation Catalyst  
An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, an oxidation catalyst composite including a...
US20130202507 METHOD FOR TREATING NOX IN EXHAUST GAS AND SYSTEM THEREFORE  
The present invention relates to a method for the treatment of an exhaust gas comprising NOx, wherein the method comprises the step of subjecting the exhaust gas to an exhaust gas treatment system...
US20140154160 BIMETALLIC CATALYST  
An emission control catalyst composition comprising a supported bimetallic catalyst consisting of gold and a metal selected from the group consisting of platinum, rhodium, ruthenium, copper and...
US20150098879 EXHAUST SYSTEM COMPRISING EXOTHERM-GENERATING CATALYST  
An apparatus comprising a compression ignition engine and an exhaust system therefor comprising at least one exhaust system component for treating exhaust gas and means for generating an exotherm...
US20140322114 THREE-WAY CATALYST COMPRISING MIXTURE OF NICKEL AND COPPER  
A three-way catalyst including a mixture of nickel and copper is provided for reducing carbon monoxide, hydrocarbon emissions, and nitrogen oxides from vehicle engine exhausts. The catalyst is...
US20140260213 Aftertreatment System For Simultaneous Emissions Control In Stationary Rich Burn Engines  
A catalyst system may include a three-way catalyst that may receive exhaust gases from an engine and convert the exhaust gases to first converted exhaust gases. An ammonia slip catalyst may...
US20140234189 Positive Ignition Engine and Exhaust System Comprising Three-Way Catalysed Filter  
A positive ignition engine is disclosed. The engine comprises an exhaust system comprising a filter for filtering particulate matter from the emitted exhaust gas. The filter comprises a porous...
US20150158023 COLD START CATALYST AND ITS USE IN EXHAUST SYSTEMS  
A cold start catalyst is disclosed. The cold start catalyst is effective to adsorb NOx and hydrocarbons (HC) at or below a low temperature and to covert and release the adsorbed NOx and HC at...
US20150071851 8-Ring Small Pore Molecular Sieve As High Temperature SCR Catalyst  
Described is a selective catalytic reduction catalyst comprising an iron-promoted 8-ring small pore molecular sieve. Systems and methods for using these iron-promoted 8-ring small molecular sieves...
US20140112854 8-Ring Small Pore Molecular Sieve as High Temperature SCR Catalyst  
Described is a selective catalytic reduction catalyst comprising an iron-promoted 8-ring small pore molecular sieve. Systems and methods for using these iron-promoted 8-ring small molecular sieves...
US20140079611 B-TYPE IRON SILICATE COMPOSITION AND METHOD FOR REDUCING NITROGEN OXIDES  
The present invention relates to a composition including a β-type iron silicate, which includes all or part of iron in a β-type framework structure, and a solid acidic porous inorganic oxide. The...
US20130156669 CATALYSTS FOR NOX REDUCTION EMPLOYING H2 AND A METHOD OF REDUCING NOX  
Disclosed is a catalyst composition for reducing NOx through two steps including reacting NOx with H2 thus producing ammonia which is then reacted with NOx, instead of direct NOx reduction by H2,...
US20140161695 Diesel Oxidation Catalyst Comprising Palladium, Gold And Ceria  
The present invention relates to a diesel oxidation catalyst comprising a carrier substrate, and a first washcoat layer disposed on the substrate, the first washcoat layer comprising palladium...
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.
US20120230894 Urea-Resistant Catalytic Units And Methods of Using The Same  
According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst...
US20100322833 Urea-Resistant Catalytic Units and Methods of Using the Same  
According to at least one aspect of the present invention, a urea-resistant catalytic unit is provided. In at least one embodiment, the catalytic unit includes a catalyst having a catalyst...
US20130280150 CATALYTICALLY ACTIVE PARTICULATE FILTER AND USE THEREOF  
A catalytically active particulate filter is proposed which is suitable for use in an exhaust gas cleaning system for diesel engines. The particulate filter removes diesel soot particles from the...
Matches 1 - 50 out of 294 1 2 3 4 5 6 >