Fig. 5

Catalytic performance. a Time-on-stream evolution of CO conversion for the Co@SiO2-873 and Co/SiO2 catalysts prepared using conventional methods. M’ refers to melt infiltration. IWI refers to incipient wetness impregnation. A refers to Aerosil-200 support and F refers to CARiACT Q-10 support. Reaction conditions: 483 K, 20 bar, H2/CO = 1, and syngas flow of 40 ml min−1. b Time-on-stream evolution of CO conversion for the Co@SiO2-873 and Co/SiO2 -F-TIWI catalysts prepared using two-step incipient wetness impregnation method (TIWI). Reaction conditions: 483 K, 26 bar, H2/CO = 2, and syngas flow of 40 ml min−1