Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And group viii containing
Patent
1998-02-12
1999-10-19
Dunn, Thomas G.
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And group viii containing
502 66, 502 77, B01J 29072
Patent
active
059688610
ABSTRACT:
A catalytic material useful for the abatement of NO.sub.x in a lean environment containing a zeolite material having incorporated therein copper, cobalt and iron as catalytically active species. The catalytically active metals are preferably incorporated into the zeolite by ion exchange and precipitation. The catalytic material may typically contain from about 2.0 to about 8.0 percent copper, from about 1.0 to about 4.0 percent iron and from about 0.25 to about 4.0 percent cobalt by weight of the catalytic material, i.e., by weight of the zeolite material plus the catalytic metals incorporated therein. Optionally, the catalytic material may be admixed with a binder and applied as an adherent coating onto a carrier to be placed in a gas stream containing the nitrogen oxides.
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Influence of Cocations on Catalytic Activity of Copper Ion-Exchanged ZSM-5 Zeolite for Reduction of Nitric Oxide with Ethene in the Presence of Oxygen, Catalysis Letters 12(1992) p. 361-366, accptd. 10/23/91, J.C. Baltzer A.B. Scientific Pub. Co., Teraoka et al.
Enhancement of Catalytic Activity of Copper Ion-Exchanged Y Type Zeolites for the Decomposition of Nitrogen Monoxide, Feb. 1989 The Chemical Society Japan, Bull. Chem. Soc. Jpn., 62, p. 583-584, vol. 62, No. 2, Iwamoto, et al.
Cocation Effect in Catalytic Property of Copper Ion-Exchanged ZSM-5 Zeolites for the Direct Decomposition of Nitrogen Monoxide, 1991 The Chemical Society of Japan, Chemistry Letters, p. 407-410, Kagawa, et al.
Dang Dinh
Deeba Michel
Farrauto Robert J.
Feeley Jennifer S.
Dunn Thomas G.
Engelhard Corporation
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