Method of removing nitric oxide from gases

Details Method of removing nitric oxide from gases Method of removing nitric oxide from gases

1977-01-10

1979-03-06

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232132, 4232135, 423593, 423644, 252462, 252463, 252464, 252465, 252466PT, 252466J, 252467, 252468, 252472, 252473, 252474, B01D 5334

Patent

active

041431200

ABSTRACT:
This invention relates to a process for the purification of air and other gaseous media. The invention is particularly directed towards a process for the decomposition of one or more of the oxides of nitrogen present in a gas stream containing gaseous compositions such as carbon monoxide and hydrocarbon. In more detail the process of the invention includes the step of contacting said air or other gaseous media with a catalyst comprising a bronze selected from the group consisting of:
(a) compositions having the general formula A.sub.x BO.sub.y where A is selected from the group consisting of the alkali metals, the alkaline earth metals, the rare earths, Ba, PB, Tl, Ni, Cu, NH.sub.4, Ag and H; B is selected from the group consisting of Ti, V, Nb, Mo, Ta, W, Pt and Re, with x normally in the range 0 <2< and y normally lies between 2 and 3; and, (b) compositions having the general formula C.sub.x D.sub.3 O.sub.4 where C is selected from the group consisting of Na, Mg, Ni, Ca, Cd and Sr; D is Pd or Pt and x normally has values of 0<x<1.

REFERENCES:
patent: 3752776 (1973-08-01), Chester et al.

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