Activation studies with a promoted precipitated iron fischer-tropsch catalyst

Dragomir B. Bukur, Xiaosu Lang, Joseph A. Rossin, William H. Zimmerman, Michael P. Rosynek, Eshan B. Yeh, Chiuping Li

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Abstract

The effect of reductant type (CO, H2, or H2/CO = 0.68), activation temperature (250, 280, and 310 °C), duration (8 and 24 h), and pressure (0.1 and 1.48 MPa) on the activity and selectivity of a promoted precipitated iron catalyst (100Fe/3Cu/0.2K) was studied in a fixed bed reactor. It was found that activation parameters have a strong effect on the catalyst behavior during Fischer-Tropsch (FT) synthesis at 250 °C, 1.48 MPa, 2 nL/g of catalyst/h, and H2/CO = 1. Activations in CO led to catalysts that had higher initial activity and better selectivity (less methane and other light hydrocarbons) than H2 activated catalysts. However, the activity of CO-reduced catalysts declined with time on stream, whereas the activity of H2-reduced catalysts remained constant or increased during 120 h of testing. Activation in CO at 280 °C and 0.1 MPa for 24 h was the most desirable on the basis of overall catalyst activity, selectivity, and stability.

Original languageEnglish
Pages (from-to)1130-1140
Number of pages11
JournalIndustrial and Engineering Chemistry Research®
Volume28
Issue number8
Publication statusPublished - 1989
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

Bukur, D. B., Lang, X., Rossin, J. A., Zimmerman, W. H., Rosynek, M. P., Yeh, E. B., & Li, C. (1989). Activation studies with a promoted precipitated iron fischer-tropsch catalyst. Industrial and Engineering Chemistry Research®, 28(8), 1130-1140.