Method for production of carbon monoxide-reduced hydrogen-containing gas

Abstract

A method for the oxidative removal of carbon monoxide from a hydrogen containing gas employing a catalyst for the selective oxidation of carbon monoxide is provided.

1 . A method for producing a CO-reduced, hydrogen-containing gas, which comprises selectively oxidizing carbon monoxide in a gas of essentially hydrogen, with oxygen in the presence of a CO oxidation catalyst comprising ruthenium with an alkali metal held on a carrier of titania and alumina, wherein the weight ratio of titania to alumina falls between 1/99 and 15/85, and the amount of ruthenium falls between 0.3 and 3% by weight of the carrier. 
     
     
         2 . The method for producing a hydrogen-containing gas as claimed in  claim 1 , wherein the gas of essentially hydrogen is obtained by reforming or partially oxidizing a hydrogen-producing starting material. 
     
     
         3 . The method for producing a hydrogen-containing gas as claimed in  claim 1 , wherein the hydrogen-containing gas produced is for fuel cells. 
     
     
         4 . The method for producing a CO-reduced, hydrogen-containing gas according to  claim 1 , wherein the alkali metal is at least one selected from the group consisting of potassium, cesium, rubidium, sodium and lithium. 
     
     
         5 . The method for producing a CO-reduced hydrogen-containing gas according to  claim 1 , wherein the carrier of titania and alumina comprises titania adhering onto a shaped alumina. 
     
     
         6 . The method for producing a CO-reduced hydrogen-containing gas as claimed in  claim 5 , wherein the shaped alumina is solid grains or powder of alumina. 
     
     
         7 . The method for producing a CO-reduced hydrogen-containing gas as claimed in  claim 2 , wherein the gas of essentially hydrogen is obtained by reforming or partially oxidizing a hydrogen-producing starting material. 
     
     
         8 . The method for producing a CO-reduced hydrogen-containing gas as claimed in  claim 5 , wherein the gas of essentially hydrogen is obtained by reforming or partially oxidizing a hydrogen-producing starting material. 
     
     
         9 . The method for producing a hydrogen-containing gas as claimed in  claim 4 , wherein the hydrogen-containing gas produced is for fuel cells.