HIGHLY DISPERSED COBALT CATALYSTS MODIFIED WITH TRANSITION-METALS AND THEIR APPLICATIONS TO CO HYDROGENATION

In the presence of the transition metals, such as Ru and Ir, Co(A)/SiO2 catalyst, prepared from cobalt(II) acetate, easily forms highly dispersed cobalt metal particles by the reduction of cobalt(II) with spillovered hydrogen. The characterizations of these catalysts were carried out using by EXAFS, XPS, XRD, etc. The catalysts have high activity for CO hydrogenation to give oxygenates with relatively high selectivity.