Catalyst and method for catalytically decomposing nitrogen oxide

Details Catalyst and method for catalytically decomposing nitrogen oxide Catalyst and method for catalytically decomposing nitrogen oxide

1991-03-08

1993-06-15

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

B01J 800, C01B 2100

Patent

active

052195457

ABSTRACT:
A catalyst and a method for catalytically decomposing nitrogen oxides, wherein the catalyst comprises a zeolite having a mole ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 20, and containing (i) copper ions and (ii) (a) transition metal ions other than copper ions, (b) at least one alkaline earth metal ion selected from calcium, strontium and barium ions, (c) yttrium ions, or (a) silver ions.

REFERENCES:
patent: 4104361 (1978-08-01), Nishikawa et al.
patent: 4447353 (1984-05-01), Pence et al.
patent: 4950461 (1990-08-01), Schwetje et al.
patent: 5078981 (1992-01-01), Kagawa et al.

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