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Comparison of 1Co-SiO2 and impCo-SiO2 for the reaction of CO2 and C2H6. Reaction conditions were: T = 923 K; CO2:C2H6:He = 1:1:4; space time = 1 h·gcat·mL−1. (a) C2H6 conversions and selectivity after 1 h. (b) Time-on-stream curves for C2H6 conversions and selectivities to C2H4 for 1Co-SiO2 (■, □)) and impCo-SiO2 (●, ○).
