| 摘要 |
Catalysts, suitable for methanating synthesis gas e.g. those obtained by the ash slagging gasification of coal, are prepared by a process which includes the steps of (a) admixing an aqueous solution of water soluble salts of at least one divalent Group VIII metal and at least one trivalent metal in which is suspended at least one kandite mineral, the weight ratio of Group VIII and trivalent metals (calculated as oxides in the calcined precursor form) being not less than 3:1, and an aqueous solution of an alkaline compound which when reacted with said water soluble salts produces a water insoluble compound of said metals, thereby to precipitate a water insoluble complex of said metals in admixture with said kandite, (b) calcining said complex and (c) reducing the thus formed calcined precursor. |
