Method of removing nitrogen monoxide from a nitrogen monoxide-co

Details Method of removing nitrogen monoxide from a nitrogen monoxide-co Method of removing nitrogen monoxide from a nitrogen monoxide-co

1974-09-20

1976-10-05

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, C01B 2100

Patent

active

039845222

ABSTRACT:
A method for removing nitrogen monoxide effectively from a nitrogen monoxide-containing gas which comprises contacting a nitrogen monoxide-containing gas with an aqueous solution containing a ferrous ion complex formed from a ferrous ion and an organic compound of 2 to 24 carbon atoms having in the molecule at least one atomic group selected from mercapto, amino, imino and nitrilo groups. When a sulfite or sulfide is present in the above aqueous solution, the nitrogen monoxide-absorbing capacity of the aqueous solution can be enhanced and nitrogen monoxide absorbed in the aqueous solution is reduced to non-toxic nitrogen. According to this method, nitrogen monoxide can be removed effectively, even if the gas to be treated contains an oxidizing substance such as oxygen.

REFERENCES:
patent: 3565813 (1971-02-01), Bersworth

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