N.e. Chemcat Corporation

Basf Corporation

Heesung Catalysts Corporation

Heesung Cataysts Corporation

Basf Mobile Emissions Catalysts LLC

Yasuyuki Banno

Makoto Nagata

Patrick L Burk

Jaya L Mohanan

Eunseok Kim

Michael Breen

Barbara K Slawski

Jaya L Monahan

Yukio Takagi

Kiyohiko Saito

Barbara Slawski

Michael J Breen

Toshinori Okajima

Takeshi Mende

Makato Nagata

Provided are a high-performance Cu&#x2014;P co-supported zeolite and the like having excellent thermal endurance and catalyst performance. A Cu&#x2014;P co-supported zeolite comprising at least a small pore size zeolite, and an extra-backbone copper atom and an extra-backbone phosphorus atom supported on the small pore size zeolite, wherein a silica-alumina ratio (SiO/AlO) is 7 or more and 20 or less, a ratio of the copper atom to a T atom (Cu/T) is 0.005 or more and 0.060 or less, a ratio of the phosphorus atom to the T atom (P/T) is 0.005 or more and 0.060 or less, and a ratio of the phosphorus atom to the copper atom (P/Cu) is 0.1 or more and 3 or less.

Cu&#x2014;P co-supported zeolite, and selective catalytic reduction catalyst and catalyst for exhaust gas using same

It is intended to provide a novel zeolite with a rare earth element-substituted framework which has a higher amount of NOx adsorbed and a method for producing the same, and a NOx adsorption member and a catalyst for automobile exhaust gas, etc. comprising the same. The present invention provides a zeolite with a rare earth element-substituted framework, comprising at least a zeolite and at least one rare earth element selected from the group consisting of Ce, La, Nd and Pr, wherein a content ratio of the rare earth element is 1 to 15% by mass in total based on the total amount, and one or some of Al and/or Si atoms constituting the framework of the zeolite are replaced with the rare earth element.

Zeolite with rare earth element-substituted framework and method for producing same, and NOx adsorber, selective catalytic reduction catalyst and automobile exhaust gas catalyst comprising same

A slurry composition for a catalyst and a method for producing the same, a catalyst and a method for producing the same using the slurry composition for a catalyst. The method omits many heretofore required treatment steps and reduces catalyst production cost. The method comprising the steps of providing a slurry composition for a catalyst, comprising at least an aluminosilicate, Cu, and water, and having a solid concentration of 0.1% by mass to 90% by mass, wherein a component for a catalyst has composition represented by AlO&#xb7;xSiO&#xb7;yTO&#xb7;zCuO (wherein T is a quaternary ammonium cation, and x, y and z are numbers that satisfy 10&#x2264;x&#x2264;40, 0.1&#x2264;y&#x3c;2.0, and 0.1&#x2264;z&#x3c;2.0, respectively) in terms of molar ratio based on an oxide; coating at least one side of a support with this slurry composition; and heat-treating at 350&#xb0; C. or higher.

Slurry composition for catalyst and method for producing same, method for producing catalyst using this slurry composition for catalyst, and method for producing Cu-containing zeolite

An exhaust gas purification catalyst apparatus. The apparatus has a noble metal component for oxidizing NOx in an exhaust gas discharged from a diesel engine, a reducing agent spraying means for supplying the reducing agent selected from a urea component or an ammonia component, and a selective reduction catalyst (SCR) not comprising a noble metal for removing by reduction NOx by contacting with the reducing agent, in this order from the upstream side of an exhaust gas passage. Activity of the selective reduction catalyst (SCR) is maintained by setting that the noble metal component of the oxidation catalyst (DOC) comprises platinum and palladium, and ratio of platinum particles existing alone is 20% or less, or average particle diameter of the noble metal is 4 nm or larger, and by suppressing volatilization of platinum from the oxidation catalyst (DOC), even when catalyst bed temperature increases up to 900&#xb0; C.

Off gas purification device

Described are compositions and catalytic articles comprising both a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

Mixed metal 8-ring small pore molecular sieve catalyst compositions, catalytic articles, systems, and methods

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 as catalysts in a variety of processes such as abating pollutants in exhaust gases and conversion processes are also described.

8-ring small pore molecular sieve as high temperature SCR catalyst

Described are compositions and catalytic articles comprising a copper-promoted 8-ring small pore molecular sieve and an iron-promoted 8-ring small pore molecular sieve. The catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant.

Described is a selective catalytic reduction catalyst comprising an 8-ring small pore molecular sieve promoted with copper and an alkaline earth component. The catalyst is effective to catalyze the reduction of nitrogen oxides (NOx) in the presence of a reductant. A method for selectively reducing nitrogen oxides is also described.

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Shizuoka, Japan

Yasuyuki Banno