| 摘要 |
PURPOSE:To obtain hydrogen-containing gas having low CO concentration by mixing hydrogen-containing gas having high CO concentration with oxygen- containing gas and bringing it into contact with a catalyst containing gold. CONSTITUTION:Carrier such as Fe2O3 or Al2O3 is dipped in aqueous solution of chloroauric acid, dried and burned to obtain a catalyst containing 0.1-50wt.% gold. Next, hydrogen-containing gas having high hydrogen concentration containing >=0.1mol% CO concentration and >=10mol% hydrogen concentration is mixed with oxygen-containing gas having >=0.1mol% oxygen concentration in a molar ratio of O2/CO=0.5-5 to obtain mixed gas. Then, said mixed gas is brought into contact with the above-mentioned catalyst in the condition at <=200 deg.C reaction temperature and GHSV=10-10<5>h<-1> to afford hydrogen-containing gas having <=1mol% CO concentration. |
