Johnson Matthey Public Limited Company

Other

Johnson Matthey Catalysts (germany) Gmbh

Maria Theresia Brandmair

Paul Joseph Andersen

Silvia Alcove Clave

Michael Nash

David Repp

Rodney Foo

Manop Huber

Joseph Michael Fedeyko

Ralf Dotzel

Rainer Leppelt

Joerg Werner Muench

Kevin Doura

Alison Mary Wagland

Desiree Duran Martin

Joerg Muench

Heike Kreuder

Ferdinand Baer

Tilman Knorr

Simon Knoll

Bruce Gomersall

Sylvia Clave

A method and exhaust gas treatment system for treating an ammonia-containing exhaust gas, for example a livestock house exhaust gas. The exhaust gas treatment system comprises a plurality of sorbent beds comprising a copper-doped small-pore zeolite, a valve system configured to establish independently for each sorbent bed fluid communication in a first or second configuration, wherein in the first configuration a flow of ammonia-containing exhaust gas contacts the sorbent bed at a temperature of less than 50° C. for storing the ammonia; and in the second configuration a flow of heated gas maintains the sorbent bed at a temperature of at least 300° C. for releasing and treating the ammonia in situ.

Exhaust gas treatment system for an ammonia-containing exhaust gas

A multi-function catalyst article for treating both NO and carbon monoxide emissions in a flow of a combustion exhaust gas from a stationary emission source comprises a honeycomb monolith substrate comprising one or more channels which are open at both ends and extend along an axial length thereof and through which, in use, a combustion exhaust gas flows, which catalyst article comprising a catalyst composition comprising a combination of a first, vanadium-containing SCR catalyst component and a second component which is a compound of a transition metal comprising copper, manganese, cobalt, molybdenum, nickel or cerium or a mixture of any two or more thereof and optionally a third, crystalline molecular sieve component.

Multi-function catalyst article for treating both CO and NOx in stationary emission source exhaust gas

A catalyst for treating an exhaust gas comprising SO, NOand elemental mercury in the presence of a nitrogenous reductant comprises a composition containing oxides of: (i) Molybdenum (Mo) and optionally Tungsten (W); and (ii) Vanadium (V); and (iii) Titanium (Ti); and (iv) Phosphorus (P), wherein, with respect to the total metal atoms in the composition, the composition comprises: (i) Mo in an amount of less than 2 at. %, and optionally up to 9 at. % W; (ii) from 2.5 to 12 at. % V; (iii) from 85 to 96 at. % Ti, and wherein the composition comprises (iv) P in an atomic ratio to the sum of atoms of Mo, W and V of from 1:2 to 3:2. The values expressed must total 100%.

Catalyst for treating an exhaust gas, an exhaust system and a method

A catalyst for treating an exhaust gas comprising SO, NOand elemental mercury in the presence of a nitrogenous reductant comprises a composition containing oxides of: (i) Molybdenum (Mo) and/or Tungsten (W); (ii) Vanadium (V); (iii) Titanium (Ti), and (iv) an MFI zeolite, wherein the composition comprises, based on the total weight of the composition: (i) 1 to 6 wt % of MoOand/or 1 to 10 wt % WO; and (ii) 0.1 to 3 wt % VO, and (iii) 48.5 to 94.5 wt % TiO; and (iv) 35 to 50 wt % MFI zeolite.

Articles comprising a catalyst film comprising VOx, MoOor WO, and TiOdeposited on a substrate are disclosed. The articles are useful for selective catalytic reduction (SCR) of NOx in exhaust gases. Methods for producing such articles deposit a catalyst film on the substrate to form a coated substrate, which is then calcined. When used in an SCR process, the coated articles have enhanced activity for NOx conversion, reduced activity for SOx conversion, or both. Light-weight, coated articles having high catalyst loads can be fabricated at the same or reduced dimensions when compared with laminated articles, and increased kNOx/kSOx ratios are available even from coated articles having relatively thin catalyst films. The articles should have particular value for power plant operations, where coal and high-sulfur fuels are commonly used and controlling sulfur trioxide generation is critical.

Coated articles having high kNOx/kSOx ratios for selective catalytic reduction

In order to improve the lifetime of an SCR catalyst in the waste gas purification by means of the SCR process of waste gas of a biomass combustion plant, the catalyst comprises a sacrificial component selected from a zeolite and/or a clay mineral, in particular halloysite. During operation, catalyst poisons contained in the waste gas, in particular alkali metals, are absorbed by the sacrificial component so that catalytically active centers of the catalyst are not blocked by the catalyst poisons.

Catalyst and process for nitric oxide reduction in a waste gas

Systems and methods of continuous operation of a urea-SCR system at low temperatures (200-350&#xb0; C.) in the presence of high SOx containing flue gas are described. The methods comprise introducing a solution of urea and an NOforming compound, preferably an alkaline earth metal nitrate, into an exhaust stream before the exhaust stream contacts an SCR catalyst.

Low temperature urea-Scr operation in the presence of high sulphur flue gas

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Fahrenzhausen, Germany

Maria Theresia Brandmair