Fig. 1.

Catalytic performance of Co₁Mn₃–Na₂S at different reaction temperatures or pressures. a Activity and selectivity at 240–280 °C, 10 bar, and H₂/CO = 2, and b activity and selectivity at 240 °C, 3–10 bar, and H₂/CO = 2. Activity is shown here as % CO conversion and product selectivity is shown in terms of methane, CH₄ (blue solid diamonds), C₂–C₄ olefins (red solid squares), C₂–C₄ paraffins (light red open squares), and C₅₊ (grey solid triangles) which include all other products except CO₂ and C₁–C₄ hydrocarbons