1
Gerd Grubert, Torsten Neubauer, Alfred H Punke, Torsten W Müller Stach, Attilio Siani, Stanley A Roth, Jeffrey B Hoke, Shiang Sung, Yuejin Li, Xinyi Wei, Michel Deeba: Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion. BASF Corporation, Melanie L Brown, July 3, 2012: US08211392 (64 worldwide citation)

Provided is a catalyst composition, in particular a diesel oxidation catalyst, for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO). More particularly, the present invention is directed to a catalyst structure comprising at least t ...


2
Yuejin Li: SOX tolerant NOX trap catalysts and methods of making and using the same. Engelhard Corporation, Richard A Negin, July 16, 2002: US06419890 (44 worldwide citation)

The present invention relates to sulfur tolerant catalyst composites useful for reducing contaminants in exhaust gas streams, especially gaseous streams containing sulfur oxide contaminants. More specifically, the present invention is concerned with improved NOx trap catalysts for use in diesel engi ...


3
Yuejin Li, John N Armor: Catalytic decomposition of N.sub.2 O. Air Products and Chemicals, Keith D Gourley, James C Simmons, William F Marsh, December 15, 1992: US05171553 (42 worldwide citation)

The invention describes a highly efficient catalytic pollution control process for removing N.sub.2 O from gaseous mixtures. The catalytic process, which is substantially unaffected by the presence of oxygen, comprises contacting an N.sub.2 O-containing gaseous mixture with a catalyst comprising a c ...


4
Yuejin Li: Layered catalyst composite. Engelhard Corporation, Richard A Negin, April 4, 2006: US07022646 (37 worldwide citation)

A layered catalyst composite for controlling vehicular exhaust emissions is disclosed. The composite comprises a substrate such as cordierite, at least one bottom layer deposited on the substrate containing a precious metal component such as platinum and at least one NOx storage component present in ...


5
Yuejin Li, John N Armor: Catalytic reduction of NOx and carbon monoxide using methane in the presence of oxygen. Air Products and Chemicals, Keith D Gourley, James C Simmons, William F Marsh, November 9, 1993: US05260043 (33 worldwide citation)

The invention describes a process for catalytically destroying NOx and carbon monoxide present in oxygen-containing combustion products wherein methane serves as a reductant. The process comprises combusting a fuel source in the presence of oxygen to form combustion products comprising nitrogen oxid ...


6
Yuejin Li, John N Armor: Catalytic reduction of NOx using methane in the presence of oxygen. Air Products and Chemicals, Keith D Gourley, James C Simmons, William F Marsh, September 22, 1992: US05149512 (33 worldwide citation)

The invention describes a catalytic process for destroying NOx from oxygen-containing combustion products wherein methane serves as a reductant. The process comprises contacting the NOx-containing combustion products with a desired amount of methane and oxygen in the presence of a metal-exchanged cr ...


7
Yuejin Li, Michel Deeba, Joseph Charles Dettling, Joseph Allan Patchett, Stanley Allen Roth: Emissions treatment system with NSR and SCR catalysts. BASF Catalysts, Scott S Servilla, Diehl Servilla, Melanie L Brown, February 17, 2009: US07490464 (20 worldwide citation)

Provided is an emissions treatment system for an exhaust stream, having a NOx storage reduction (NSR) catalyst with a NOx sorbent at a concentration of at least 0.1 g/in3 and a platinum group metal component dispersed on a refractory metal oxide support; and, an SCR catalyst disposed downstream of t ...


8
Thomas S Farris, Yuejin Li, John N Armor, Thomas A Braymer: Method for decomposing N.sub.2 O utilizing catalysts comprising calcined anionic clay minerals. Engelhard Corporation, December 5, 1995: US05472677 (12 worldwide citation)

The invention describes a highly efficient catalytic pollution control process for removing N.sub.2 O from gaseous mixtures. The process utilizes catalysts derived from anionic clay minerals, which after appropriate heat activation, provide superior N.sub.2 O decomposition activity. The catalytic pr ...


9
Yuejin Li, Stanley A Roth: Catalytic articles, systems and methods for the oxidation of nitric oxide. BASF Corporation, Melanie L Brown, March 25, 2014: US08679434 (12 worldwide citation)

Described is a catalytic article for the treatment of lean burn engine exhaust gas. The catalytic article comprises a honeycomb substrate having disposed thereon a washcoat containing one or more calcined platinum group metal components dispersed on a refractory metal oxide support located on the ho ...


10
M Shahjahan Kazi, Michel Deeba, Torsten Neubauer, Alfred Helmut Punke, Torsten Wolfgang Mueller Stach, Gerd Grubert, Stanley A Roth, Jeffrey Barmont Hoke, Shlang Sung, Yuejin Li, Xinyi Wei, Chung Zong Wan: Layered diesel oxidation catalyst composites. BASF Corporation, Melanie L Brown, December 11, 2012: US08329607 (11 worldwide citation)

Provided are diesel exhaust components where palladium is segregated from a molecular sieve, specifically a zeolite, in a catalytic material. In the catalytic material, therefore, there are at least two layers: a palladium-containing layer that is substantially free of a molecular sieve and a hydroc ...