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AssigneeJohnson Matthey Public Limited Company
InventorsTodd Howard Ballinger, Philip Gerald Blakeman, Guy Richard Chandler, Hai-Ying Chen, Julian Peter Cox, Joseph M. Fedeyko, Alexander Nicholas Michael Green, Paul Richard Phillips, Stuart David Reid, Erich Conlan Weigert, James Alexander Wylie
Estimating the term…
A catalyst composition is provided having a zeolite material of a CHA crystal structure and a silica to alumina mole ratio (SAR) of about 10 to about 25 and preferably having a mean crystal size of at least 1.0 microns; and a non-aluminum base metal (M), wherein said zeolite material contains said base metal in a base metal to aluminum ratio (M:Al) of about 0.10 to about 0.24.
A catalyst composition comprising
A catalyst produced by depositing copper on a zeolite substrate having a non-phosphorous chabazite crystal structure with a mean crystal size of at least about 0.5 micron and an SAR of about 10 to about 25 to form a catalytic material having a copper to aluminum molecular ratio of about 0.10 to about 0.24.
Dependencies are inferred from the claim text.