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Effects of SiO2 Incorporation Sequence on the Catalytic Properties of Iron-Based Fischer–Tropsch Catalysts Containing Residual Sodium

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Abstract

Fischer–Tropsch synthesis was carried out over industrially important Fe/Cu/K/SiO2 catalysts containing a small amount of residual sodium which originated from the sodium carbonate solution used as a precipitating agent. The structural promoter, SiO2, was incorporated by two comparative sequences: immediately after precipitation (AP) or after a subsequent wash (AW). Whereas AW exhibited severe deactivation during the reaction, AP displayed high and stable catalytic activity for the entire reaction time. Furthermore, AP showed higher selectivity of liquid hydrocarbons, in particular heavy hydrocarbons, than AW. We attribute the advantageous catalytic performance observed in AP to the enhanced reducibility and higher surface basicity of AP, potentially induced by higher dispersion of catalysts and promoters.

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Acknowledgments

This work was supported by the Research and Development Program of the Korea Institute of Energy Research (KIER-GP2012-0005-08/B3-2423-04). The authors highly appreciate Mr. Dae Chan Ahn (Hanbat National University, Republic of Korea) for his technical support in the experimental procedure.

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Authors and Affiliations

  1. Korea Institute of Energy Research, 152 Gajeong-Ro, Yuseong-Gu, Daejeon, 305-343, Republic of Korea

    Dong Hyun Chun, Ji Chan Park, Ho-Tae Lee, Jung-Il Yang, SungJun Hong & Heon Jung

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  1. Dong Hyun Chun
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  2. Ji Chan Park
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  3. Ho-Tae Lee
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  4. Jung-Il Yang
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  5. SungJun Hong
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Correspondence to Heon Jung.

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Chun, D.H., Park, J.C., Lee, HT. et al. Effects of SiO2 Incorporation Sequence on the Catalytic Properties of Iron-Based Fischer–Tropsch Catalysts Containing Residual Sodium. Catal Lett 143, 1035–1042 (2013). https://doi.org/10.1007/s10562-013-1053-z

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