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US 11,883,805 B2Granted
Catalytic composition
AssigneeJohnson Matthey Public Limited Company
InventorsDaniel Avis, Yannick Bidal, Alexander Nicholas Michael Green, Neil Greenham, Matthew Eben Harris
Life of this patent
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Abstract
A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising: i) Ce and/or La in a total amount of about 5 to about 400 g/ft3; and ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft3.
Claims13
A catalytic composition for treating a NOx-containing exhaust gas, wherein the composition comprises a copper-substituted small-pore zeolite comprising:
- i) Ce and/or La in a total amount of about 5 to about 400 g/ft3;
- and
- ii) Nd and/or Nb in a total amount of about 5 to about 400 g/ft3.
Dependencies are inferred from the claim text.