Decomposing nitrogen oxides with nickel-iron-chromium catalysts

Details Decomposing nitrogen oxides with nickel-iron-chromium catalysts Decomposing nitrogen oxides with nickel-iron-chromium catalysts

1974-11-18

1977-06-14

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

423239, 4232135, 252470, B01D 5300

Patent

active

040297381

ABSTRACT:
Catalyst for the decomposition of nitrogen oxides, particularly for use in catalytic exhaust boxes in view of decomposing the nitrogen oxides contained in the exhaust gases from internal combustion engines, comprising, deposited on a carrier, from 3 to 20% of an active phase of the formula Ni.sub.x (Fe.sub.y Cr.sub.z)O.sub.t, in which x has a value from 0.5 to 1.5, y + z a value from 1.5 to 3, the ratio ##EQU1## A VALUE FROM 0.01 TO 0.9 AND T A VALUE LOWER THAN 10.

REFERENCES:
patent: 2658858 (1953-11-01), Lang et al.
patent: 3216954 (1965-11-01), Howk et al.
patent: 3370914 (1968-02-01), Gross et al.
patent: 3444099 (1969-05-01), Taylor
patent: 3699906 (1972-06-01), Koberstein
patent: 3849538 (1974-11-01), Campbell et al.
patent: 3928534 (1975-12-01), Koberstein

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