Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1995-09-25
1997-09-23
Lewis, Michael
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423405, 95129, 95902, B01J 800
Patent
active
056701250
ABSTRACT:
A gas mixture comprised of nitric oxide and, optionally an inert gas, and containing small amounts of nitrogen dioxide, and perhaps moisture and sulfur dioxide, is purified by passing the gas stream through a bed of zeolite having a silica to alumina ratio not greater than about 200. The concentration of nitrogen dioxide, sulfur dioxide and moisture in the gas stream are reduced to about 1 ppm or less as the gas mixture passes through the bed of zeolite.
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patent: 5514204 (1996-05-01), Sheu et al.
Galica Theodore R.
Ramachandran Ramakrishnan
Sheu Lien-Lung
Dunn Jr. Thomas G.
Lewis Michael
Pace Salvatore P.
Reap Coleman R.
The BOC Group Inc.
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