US 12,134,086 B2
Manganese-containing diesel oxidation catalyst
Shiang Sung, New York, NY (US); Stanley A. Roth, Yardley, PA (US); Claudia Zabel, Hannover (DE); Susanne Stiebels, Adenbuttel (DE); Andreas Sundermann, Bensheim (DE); and Olga Gerlach, Ludwigshafen (DE)
Assigned to BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US)
Filed by BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US)
Filed on Mar. 21, 2022, as Appl. No. 17/655,584.
Application 17/655,584 is a continuation of application No. 16/410,915, filed on May 13, 2019, granted, now 11,311,865.
Application 16/410,915 is a continuation of application No. 14/107,704, filed on Dec. 16, 2013, granted, now 10,335,776, issued on Jul. 2, 2019.
Prior Publication US 2022/0250044 A1, Aug. 11, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 37/02 (2006.01); B01D 53/94 (2006.01); B01J 29/076 (2006.01); B01J 35/00 (2006.01); B01J 23/40 (2006.01); B01J 23/656 (2006.01)
CPC B01J 29/076 (2013.01) [B01D 53/944 (2013.01); B01D 53/945 (2013.01); B01J 35/19 (2024.01); B01J 37/0244 (2013.01); B01J 37/0246 (2013.01); B01D 53/9418 (2013.01); B01D 53/9477 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20746 (2013.01); B01D 2255/20753 (2013.01); B01D 2255/50 (2013.01); B01D 2255/502 (2013.01); B01D 2255/504 (2013.01); B01D 2255/9022 (2013.01); B01D 2255/91 (2013.01); B01D 2255/912 (2013.01); B01J 23/40 (2013.01); B01J 23/6562 (2013.01); Y02T 10/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An oxidation catalyst composite for an abatement of exhaust gas emission from a lean burn engine comprising:
a carrier substrate having a length, an inlet end, and an outlet end, an oxidation catalyst catalytic material on the carrier, the oxidation catalyst catalytic material including:
a first washcoat layer comprising a first refractory metal oxide support, a platinum (Pt) component and a palladium (Pd) component in a ratio of Pt to Pd in a range of about 10:1 to 1:10; and
a second washcoat layer comprising a second refractory metal oxide support containing a manganese (Mn) component, a Pt component, and a Pd component, wherein the Mn component is dispersed on a surface of the second refractory metal oxide support as discrete manganese oxide particles;
wherein the Mn component content is in a range of 0.1% to 30% by weight, based on a weight of the second refractory metal oxide support;
wherein the Mn component is doped with Fe, Ni, Co, Cu, Ce, Sn, Ir, In, and combinations thereof;
wherein the second washcoat layer does not comprise a zeolite and
wherein the oxidation catalyst composite is effective to abate hydrocarbon and carbon monoxide, and to oxidize nitrogen monoxide (NO) to nitrogen dioxide (NO2) in a lean burn engine exhaust.