| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method in which, regarding a method where a gaseous starting material comprising carbon monoxide and hydrogen and an oxygen-containing gas are brought into contact in the presence of a catalyst, so as to selectively oxidize the carbon monoxide, by which the concentration of the carbon monoxide in the gaseous starting material can be reduced over a long period. <P>SOLUTION: Regarding the method for reducing the concentration of carbon monoxide in a gaseous starting material comprising hydrogen and carbon monoxide, in a method where a gaseous starting material comprising hydrogen and carbon monoxide and an oxygen-containing gas are brought into contact in the presence of a catalyst, so as to selectively oxidize the carbon monoxide, as the catalyst, the one obtained by carrying Ru on a carrier composed of an inorganic oxide containing at least one kind selected from alumina, silica, zirconia and titania is used, and also, the temperature of the catalyst before the introduction of the oxygen is ≥95°C. <P>COPYRIGHT: (C)2008,JPO&INPIT |
