Catalyst for treating exhaust gas
AssigneeJohnson Matthey Public Limited Company
InventorsJohn Leonello CASCI, Janet Mary FISHER, Lucia GABEROVA
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Abstract
Provided is a catalyst composition having an aluminosilicate molecular sieve having an AEI structure and a mole ratio of silica-to-alumina of about 20 to about 30 loaded with about 1 to about 5 weight percent of a promoter metal, based on the total weight of the molecular sieve material. Also provided are method, articles, and systems utilizing the catalyst composition.
Claims27
A catalyst composition comprising an aluminosilicate molecular sieve having an AEI structure and a mole ratio of silica-to-alumina of about 20 to about 30 and about 1 to about 5 weight percent of a promoter metal, based on the total weight of the molecular sieve material.
A catalyst composition comprising:
- a. an aluminosilicate molecular sieve having an AEI structure and a mole ratio of silica-to-alumina of about 19 to about 30;
- b. extra-framework promoter metal (PM) disposed on and/or within the molecular sieve, wherein the promoter metal is present in an atomic ratio of PM to aluminum of about 0.15 to about 1.
Dependencies are inferred from the claim text.