| abstract |
Prodn. of hydrocarbons is carried out by reaction of CO with H2 on a catalyst contg. Ru and one or more Fe-group metals (esp. Fe). The catalysts have higher activity than Fe-group metal catalysts and higher stability than Ru catalysts. Selectivity is high, esp. wrt suppression of O-contg. product formation. The catalysts are pref. by impregnating a porous support (esp. Al2O3) with aq. solns. of Ru and Fe-gp. metal salts, drying, calcining in an inert gas, and then reducing in H2 at 200-400 degrees C and 1-50 bar (GHSV = 500-5000). The atomic ratio of Fe-group metal to Ru is pref. 0.5-3:1 (esp. 1.5-2.5:1). The particle size is pref. 1-5 mm for a fixed bed, 0.5-2.5 mm for an expanded bed or 20-150 mu for a catalyst suspension. |