Process for the removal of an impurity contained in a composite gas
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorDaniel Gary
Life of this patent
Estimating the term…
Abstract
A process for the substantial removal of at least one of the carbon monoxide and hydrogen impurities contained in a composite gas, according to which: (a) at least one of the carbon monoxide and hydrogen impurities contained in the composite gas are reacted with oxygen, in contact with a catalyst comprising particles of at least one metal chosen from the group consisting of gold and palladium, these particles being supported by titanium dioxide, in order respectively to form carbon dioxide and water; (b) optionally, the carbon dioxide and the water formed are removed from the composite gas; (c) the composite gas, substantially free of its carbon monoxide and/or hydrogen impurities, is recovered.
Claims16
Process for the substantial removal of carbon monoxide and/or hydrogen impurities contained in a composite gas, said process comprising:
- a) contacting the composite gas with oxygen and a catalyst comprising particles selected from the group consisting of gold, palladium, and mixtures thereof;
- said particles being supported by titanium dioxide, wherein the carbon monoxide and/or hydrogen impurities react with oxygen to form carbon dioxide and/or water respectively;
- b) optionally removing the carbon dioxide and the water from the composite gas;
- and
- c) recovering a composite gas substantially free of carbon monoxide and/or hydrogen impurities.
Process for the preparation of nitrogen from air containing carbon monoxide and/or hydrogen impurities, said process comprising:
- a) contacting the air with oxygen and a catalyst comprising particles selected from the group consisting of gold, palladium, and mixtures thereof, said particles being supported by titanium dioxide, wherein the carbon monoxide and/or hydrogen impurities react with oxygen to form carbon dioxide and/or water respectively;
- b) optionally withdrawing the carbon dioxide and the water from the air;
- c) separating nitrogen from oxygen in the air;
- and
- d) recovering a high-purity nitrogen, substantially free from the carbon monoxide and hydrogen impurities.
Dependencies are inferred from the claim text.