Method of and catalysts for removal of nitrogen oxides

Details Method of and catalysts for removal of nitrogen oxides Method of and catalysts for removal of nitrogen oxides

1977-09-23

1978-09-26

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

252466B, B01D 5334

Patent

active

041170814

ABSTRACT:
Nitrogen oxides are removable from an exhaust gas containing a reductant such as carbon monoxide, hydrogen and methane by contacting the gas with a catalyst composed of alumina, copper, rhodium or ruthenium, and at least one of the alkali metals, the alkaline earth metals and the transition metals; for example, a catalyst composed of 0.051%Rh--5%Cu--3%Mg--Al.sub.2 O.sub.3. The activity of such catalysts is not influenced by the presence of O.sub.2, H.sub.2 O and SO.sub.2 in the exhaust gas.

REFERENCES:
patent: 3429656 (1969-02-01), Taylor et al.
patent: 3816594 (1974-06-01), Kobylinski et al.
patent: 3835069 (1974-09-01), Gandhi et al.
patent: 3840839 (1974-10-01), Kobylinski et al.
patent: 3907968 (1975-09-01), Kobylinski et al.
patent: 4002723 (1977-01-01), Inoba et al.

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