| 摘要 |
PURPOSE:To improve reaction activity markedly by forming films of compds. contg. transition elements or alkaline earth elements on the surface of porous Ni metal and oxidizing the same at high temp. and reducing the metal in reducing gaseous flow. CONSTITUTION:Foamed Ni plate is pressurized and is molded to prescribed shape and the moldings are dipped in a soln. prepd. by dissolving a compd. contg. alkaline earth metal element such as Al, Si, Mg or the like and transition metal element such as Ti, Zr, V and the like in water or org. solvent or suspending the same therein, whereby the films of these compds. are formed on the surface thereon. The moldings are dried and are then held for a long time in an atmosphere contg. O2 at high temp. above 1,000 deg.C to oxidize the same and to form oxide of said alkaline earth metal element or transition metal element on the surface. The moldings are reduced in reducing gaseous flow of H2 or CO, whereby the metallic Ni catalyst is produced. |
