CO2 Conversion by Controlling the Reduction Temperature of Cobalt Catalyst 


Vol. 30,  No. 3, pp. 188-194, Sep.  2024
10.7464/ksct.2024.30.3.188


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  Abstract

This study investigates the impact of reduction temperature on the structure and performance of cobalt-manganese (CM) based catalysts in the direct hydrogenation reaction of carbon dioxide (CO2). It was observed that at a reduction temperature of 350 oC, these catalysts could successfully facilitate the conversion of CO2 into long-chain hydrocarbons. This efficiency is attributed to the optimal conditions provided by the core-shell structure of the catalysts, which effectively catalyzes both the reverse water-gas shift (RWGS) and Fischer-Tropsch (FT) reactions. However, as the reduction temperature increased to 600 oC, the effectiveness of the reaction process was hindered, and there was a shift in selectivity towards methane. This shift is due to the excessive reduction of the catalyst’s outer shell, which reduces the number of RWGS sites and subsequently suppresses the production of CO. These findings highlight the importance of carefully controlling the reduction temperature in the design and optimization of cobalt-based catalysts. Maintaining a balance between the RWGS and FT reactions is crucial. This emphasizes that the reduction temperature is a key factor in efficiently generating long-chain hydrocarbons from CO2.

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  Cite this article

[IEEE Style]

H. Jo and J. Kim, "CO2 Conversion by Controlling the Reduction Temperature of Cobalt Catalyst," Clean Technology, vol. 30, no. 3, pp. 188-194, 2024. DOI: 10.7464/ksct.2024.30.3.188.

[ACM Style]

Heuntae Jo and Jaehoon Kim. 2024. CO2 Conversion by Controlling the Reduction Temperature of Cobalt Catalyst. Clean Technology, 30, 3, (2024), 188-194. DOI: 10.7464/ksct.2024.30.3.188.

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