Back to results
US 10,987,658 B2Granted
Low washcoat loading single layer catalysts for gasoline exhaust gas applications
AssigneeJohnson Matthey Public Limited Company
InventorsKenneth Camm, Hsiao-Lan Chang, Hai-Ying Chen, Michael Hales, Kwangmo Koo
Life of this patent
Estimating the term…
Abstract
A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate; and a single catalyst layer deposited directly on the substrate; wherein the single catalyst layer comprises a first platinum group metal (PGM) component, an oxygen storage component (OSC) material, and an inorganic oxide; and wherein the single catalyst layer has a total washcoat loading of less than 2.4 g/in3.
Claims27
A catalyst article for treating exhaust gas comprising:
- a substrate;
- and
- a single catalyst layer deposited directly on the substrate;
- wherein the single catalyst layer comprises a first platinum group metal (PGM) component, an oxygen storage component (OSC) material, and an inorganic oxide;
- wherein the single catalyst layer has a total washcoat loading of no greater than 1.4 g/in3;
- wherein the OSC material loading in the single catalyst layer is less than 1.2 g/in3;
- and
- wherein the substrate is a flow-through monolith.
5 more elements
Dependencies are inferred from the claim text.