| 摘要 |
In the prodn. of a catalyst contg. an Al oxide and transition metal(s) and used in the water gas reaction (prodn. of H2 and CO2 from steam and CO), a thermally decomposable Al cpd. is melted and the metal(s), as element(s) or cpd(s)., is dissolved in the melt. The mixt. is decomposed by heating, then cooled and brought into a form suitable for catalysis. The melt pref. also contains alkali metal(s) (K) or soluble cpd(s). (carbonates and/or nitrates). The Al cpd. is the nitrate. The transition metal is Cr, Mo, W, Fe and/or esp. Co and/or Ni. The catalyst can be (partly) sulphided. The catalyst has a number of active (metal) sites, which are better distributed, and excellent resistance to sulphur and mechanical stress. |
