Abstract
LaBO3 (B = Fe, Mn, and FeMn) perovskite-type oxides were prepared by sol–gel method and then used as catalysts in CO hydrogenation for light olefins. The catalysts were characterized using XRD, H2-TPR, SEM, CO (CO2)-TPD, and XPS. The results showed that the lattice oxygen migration and oxygen vacancies promoted oxygen mobility by do** Mn2+ at the B site, Moreover, the presence of manganese as a promoter in the catalyst increased olefin selectivity compared with the olefin selectivity of the catalyst containing iron at the B-site and exhibited resistance to carbon deposition; while reducing the metal elements. In CO hydrogenation, potassium-promoted LaFeMnO3 catalysts afforded high catalytic activity and C2=–C4= selectivity. An O/P value of 5.0 and a C2=–C4= fraction of 54% were achieved for all hydrocarbons with low methane selectivity.
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This work was supported by the National Natural Science Foundation of China (U20A20124).
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Ma, Lh., Gao, Xh., Ma, Jj. et al. K/LaFeMnO3 Perovskite-Type Oxide Catalyst for the Production of C2–C4 Olefins via CO Hydrogenation. Catal Lett 152, 1451–1460 (2022). https://doi.org/10.1007/s10562-021-03744-z
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DOI: https://doi.org/10.1007/s10562-021-03744-z