Abstract
Highly loaded cobalt catalysts (80% by weight) with different supports (SiO2, Al2O3, ZrO2 and MgO) were prepared by the co-precipitation technique for Fischer–Tropsch synthesis (FTS). Microcalorimetric adsorptions of NH3, CO2, CO and H2 showed that the surface acidity/basicity significantly affected the surface properties of supported Co, as evidenced by the changes of strengths of adsorption of CO and H2 on Co, which in turn affected the FTS performance. The appropriate ratio (~ 1.2) of heats for the adsorption of CO and H2 on Co seemed important in determining the FTS activity.
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