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Selective synthesis of α-olefins on Fe-Zn Fischer-Tropsch catalysts

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Abstract

Fe/Zn oxides promoted with K and Cu selectively produce α-olefins at typical Fischer-Tropsch synthesis conditions (2/1 H2/CO, 1 MPa, and 270°C). The simultaneous presence of K and Cu introduces a synergistic activity enhancement while maintaining the high olefin selectivity obtained by alkali promotion. Structural and morphological differences in Fe-Zn oxides prepared from ammonium glycolate complexes or precipitated from nitrate solutions have only a small influence on catalytic properties. Catalyst behavior is strongly influenced by synergistic promoter effects (Cu, K) and by the controlled in situ conversion of iron oxide precursors to carbides.

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Soled, S.L., Iglesia, E., Miseo, S. et al. Selective synthesis of α-olefins on Fe-Zn Fischer-Tropsch catalysts. Top Catal 2, 193–205 (1995). https://doi.org/10.1007/BF01491967

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