Patent application number | Description | Published |
20080255374 | PROCESS FOR CHARGING A LONGITUDINAL SECTION OF A CATALYST TUBE - A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions. | 10-16-2008 |
20080269522 | PROCESS FOR OPERATING AN EXOTHERMIC HETEROGENEOUSLY CATALYZED PARTIAL GAS PHASE OXIDATION OF AN ORGANIC STARTING COMPOUND TO AN ORGANIC TARGET COMPOUND - A process for operating an exothermic heterogeneously catalyzed partial gas phase oxidation of an organic starting compound in a tube bundle reactor cooled with a fluid heat carrier, in which an increase in the loading of the fixed catalyst bed disposed in the reaction tubes with the organic starting compound is preceded by an increase in the inlet temperature of the fluid heat carrier into the space surrounding the reaction tubes. | 10-30-2008 |
20080319224 | METHOD FOR THE HETEROGENEOUSLY CATALYZED PARTIAL DIRECT OXIDATION OF N-PROPANE TO ACRYLIC ACID - A method for the heterogeneously catalyzed partial direct oxidation of propane to acrylic acid in the gas phase, in which the reaction gas inlet mixture comprises cyclopropane as an impurity and the acrylic acid, after it has been converted from the product gas mixture into the liquid phase, is operated from the other constituents of the liquid phase with the aid of a separation by crystallization. | 12-25-2008 |
20100111796 | Integrated SCR and AMOX Catalyst Systems - Catalysts, methods of preparing catalyst, and methods for treating exhaust gas streams are described. In one or more embodiments, a catalyst system includes an upstream zone effective to catalyze the conversion of a mixture of NO | 05-06-2010 |
20100180580 | Emissions Treatment Systems and Methods With Catalyzed SCR Filter and Downstream SCR Catalyst - Emissions treatment systems and methods for treating an engine exhaust gas stream containing NO | 07-22-2010 |
20100269491 | PARTIAL FILTER SUBSTRATES CONTAINING SCR CATALYSTS AND METHODS AND EMISSIONS TREATMENT SYSTEMS - Catalytic articles, methods and emissions treatment systems for treating an engine exhaust gas stream containing NO | 10-28-2010 |
20110078997 | Four-Way Diesel Catalysts and Methods of Use - Provided are catalyst articles, emission treatment systems and methods for simultaneously remediating the carbon monoxide, nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The emission treatment system of specific embodiment effectively treats diesel engine exhaust with a single catalyst article. | 04-07-2011 |
20110165051 | 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 | 07-07-2011 |
20110165052 | 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 step is conducted via wet state exchanged and prior to the coating step and wherein in the copper exchange step a liquid copper solution is used wherein the concentration of copper is in the range of about 0.001 to about 0.25 molar using copper acetate and/or an ammoniacal solution of copper ions as copper source. Catalysts made by the processes, catalyst systems and methods of treating exhaust gas with the molecular sieves and catalysts are also disclosed. | 07-07-2011 |
20110271664 | Integrated SCR and AMOX Catalyst Systems - Catalysts and catalytic articles for treating exhaust gas streams are described. In one or more embodiments, a catalyst system includes a first zone to abate nitrogen oxides by selective catalytic reduction, a second zone to oxidize ammonia and a third zone to oxidize carbon monoxide and hydrocarbons. Methods for treating the exhaust gas stream are also provided. Methods of making and using such catalysts and catalytic articles are also described. | 11-10-2011 |
20110286900 | 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 containing ammonia using a platinum group metal zoned ammonia oxidation catalytic article. | 11-24-2011 |
20110305614 | Cu-CHA/Fe-MFI Mixed Zeolite Catalyst And Process For The Treatment Of NOx In Gas Streams - Described is a catalyst, preferably for use in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the MFI structure type, and one or more zeolites of the CHA structure type, wherein at least part of the one or more zeolites of the MFI structure type contain iron (Fe), and wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu). An exhaust gas treatment system is described, comprising said catalyst as well as a process for the treatment of a gas stream comprising NO | 12-15-2011 |
20140046093 | PROCESS FOR CHARGING A LONGITUDINAL SECTION OF A CATALYST TUBE - A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions. | 02-13-2014 |