| 摘要 |
PURPOSE: To selectively remove only carbon monoxide by treating a gas contg. hydrogen and carbon monoxide with a gold catalyst. CONSTITUTION: This gold catalyst is prepared by dispersedly depositing a gold superfine particle on a metal oxide. The metal oxide is at least one kind among manganese oxide, copper oxide, thin oxide, nicle oxide and their multiple oxide. A gold superfine particle of nm size should be firmly bonded onto a carrier metal oxide in this gold-metal oxide catalyst. The catalyst is appropriately produced by precipitation, coprecipitation, etc. Normally, the diameter of the primary particle is preferably controlled relatively small to a level of 10-200nm, the relatively large specific surface to >=5m<2> /g and the atomic ratio of gold to metal to 1/1250 to 1/9. The reaction condition is not specifically limited, however the temp. is preferably controlled to 30-200 deg.C and the pressure to 1-10atm. Although the amt. of catalyst to be used is not specifically restricted, the space velocity is practically controlled to 1000-50,000hr<-1> .ml/g.catalyst. |
