Basf Mobile Emissions Catalysts LLC

Basf Corporation

Gm Global Technolgoy Operations, Inc.

University of Central Florida Research Foundation, Inc.

Heesung Catalysts Corporation

Xiaolai Zheng

Michel Deeba

Aleksei Vjunov

Wei Ping Li

Pascaline Tran

Shiang Sung

Yuejin Li

Patrick L Burk

Jun Youb Lee

Fudong Liu

Shaohua Xie

Yuntao Gu

Tian Luo

Dinh Dang

Jinwoo Song

The presently claimed invention provides a layered catalytic article and an exhaust system. The catalytic article comprises a first layer comprising platinum, a first platinum group metal component other than platinum, a ceria-alumina composite, and an oxygen storage component; wherein platinum is supported on the ceria-alumina component; the platinum group metal component is selected from palladium, rhodium or a combination thereof and the platinum group metal component is supported on the oxygen storage component; a second layer comprising a second platinum group metal component; and a refractory alumina component, an oxygen storage component or a combination thereof; wherein the second platinum group component is selected from platinum, palladium, rhodium or a combination thereof; and a substrate, wherein the amount of platinum is 10 to 80 wt. %, based on the total weight of platinum, palladium and rhodium. The presently claimed invention also provides a process for the preparation of a layered catalytic article and use of the catalytic article and the exhaust system for purifying a gaseous exhaust stream comprising hydrocarbons, carbon monoxide, and nitrogen oxides.

Layered catalytic article and method of manufacturing the catalytic article

The present invention provides a catalytic article comprising a) a first layer comprising a nickel component and a copper component supported on a ceria component, wherein the amount of the nickel component is 0.1 to 30 wt. %, calculated as nickel oxide, based on the total weight of the first layer, and wherein the amount of the copper component is 0.01 to 5.0 wt. % calculated as copper oxide, based on the total weight of the first layer; b) a second layer comprising a platinum group metal component supported on at least one of an oxygen storage component, an alumina component and a zirconia component, wherein the platinum group metal component comprises platinum, rhodium, palladium, or any combination thereof, and wherein the amount of the platinum group metal component is 0.01 to 5.0 wt. % based on the total weight of the second layer; and c) a substrate, wherein the first layer and the second layer are separated by a barrier layer or a gap.

Catalytic article and methods of manufacturing and using the same

The presently claimed invention provides a layered catalytic article comprising a first layer comprising a nickel component and a ceria component, wherein the amount of the nickel component is 1.0 to 50 wt. %, calculated as nickel oxide, based on the total weight of the first layer, and wherein the first layer is essentially free of copper; a second layer comprising a platinum group metal component, an oxygen storage component, and an alumina component, wherein the platinum group metal component comprises platinum, rhodium, palladium, or any combination thereof, and wherein the amount of the platinum group metal component is 0.0 to 5 wt. %, based on the total weight of the second layer; and a substrate. The presently claimed invention also provides a process for preparing the layered catalytic article. It further provides an exhaust system for internal combustion engines comprising a layered catalytic article.

Layered catalysts composition and catalytic article and methods of manufacturing and using the same

This disclosure is directed to catalyst compositions, catalytic articles for purifying exhaust gas emissions and methods of making and using the same. In particular, the disclosure relates to a catalytic article including a catalytic material on a substrate, wherein the catalytic material has a first layer and a second layer. The first layer provides effective lean NOtrap functionality and the second layer provides effective three-way conversion of carbon monoxide, hydrocarbons, and nitrogen oxides (NO).

TWC system for fuel cut NOcontrol

A three-way catalyst for reduced palladium loading is provided. The catalyst includes an inert substrate and a palladium catalyst material coating the substrate. The palladium catalyst material includes a support material formed from one of 10% CeO/AlO, 20% CeO&#x2014;AlO(20CeAlOy), 30% CeO&#x2014;AlO(30CeAlOy), AlO, and MOx-AlO, wherein M is one of copper, iron, manganese, titanium, zirconium, magnesium, strontium, and barium. The palladium catalyst material includes a layer of CeOmaterial disposed upon the support material, wherein the layer of CeOmaterial is dispersed on a surface of the support material. The palladium catalyst material includes an active component including a layer of praseodymium oxide particles dispersed across the surface of the layer of CeOmaterial and a layer of palladium particles disposed upon and dispersed across the surface of the layer of CeOmaterial at locations each corresponding to a respective location of each of the praseodymium particles.

Three-way catalyst with reduced palladium loading and method of making the three-way catalyst

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Iselin, NJ, United States of America

Xiaolai Zheng