| 摘要 |
A ferric oxide-chromic oxide catalyst of improved strength and activity, for reacting water gas with steam to produce hydrogen, is prepared by mixing ferric oxide, chromium trioxide, and water, extruding and pelleting the mixture, and heating to form chromic oxide and to activate the catalyst. Heating may be carried out at 1000 DEG -1300 DEG F. for a period up to eight hours. The proportions of the ingredients are preferably such as to yield a catalyst containing 93 per cent ferric oxide and 7 per cent chromic oxide. The pellets may have a crushing strength of at least 80 pounds and will effect substantially equilibrium carbon monoxide conversion at 800 DEG -900 DEG F. Gas containing hydrogen, carbon dioxide, and carbon monoxide, obtained from the catalytic reaction of methane or other gaseous hydrocarbons with steam, is mixed with additional steam and passed over the catalyst at 800 DEG -900 DEG F., the carbon monoxide content of the exit gas being reduced to 1.3 per cent or below. |
