Abstract
Three types of catalyst samples, namely alumina carried Fe/K, zinc aluminate carried Fe/K, and (zinc aluminate + alumina) composite carried Fe/K, were prepared under calcination conditions of 350 ºC. The catalysts were characterized by XRD, ICP-OES, N2 physical adsorption, field emission electron microscopy as well as CO2-TPD. The performances of the catalysts in CO hydrogenation were tested in a fixed bed reactor. The results show that under similar conversions, the C2=–C4= hydrocarbon selectivity of the prepared (zinc aluminate + alumina) composite carried Fe/K catalyst can reach 5 times that of the prepared alumina carried Fe/K catalyst and 9 times that of the prepared zinc aluminate carried Fe/K catalyst, exhibiting a typical synergistic effect based on carrier composition. The basis for this synergistic effect is the significant difference in base sites on the catalyst surface.
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Acknowledgements
We thank the National Natural Science Foundation of China (NSFC, No. 21571161) and Fundamental Research Fund Project of Zhengzhou University of Light Industry (CLY-LiuZhenxin) for financial support.
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Liu, Z., Liu, H., Gao, Y. et al. Carrier synergistic effect of iron based catalysts for CO hydrogenation to lower olefins. Reac Kinet Mech Cat 137, 879–896 (2024). https://doi.org/10.1007/s11144-023-02555-0
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DOI: https://doi.org/10.1007/s11144-023-02555-0