Binder/Support Effects on the Activity and Selectivity of Iron Catalysts in the Fischer-Tropsch Synthesis

Dragomir B. Bukur, Xiaosu Lang, Doble Mukesh, William H. Zimmerman, Michael P. Rosynek, Chiuping Li

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

The influence of silica and alumina binders (supports) on the activity and product selectivity of precipitated iron catalysts for Fischer-Tropsch synthesis (FTS) was studied in a fixed bed reactor at 1.5-3.0 MPa and 220-250 °C, using synthesis gas with H2/CO = 1 M feed ratio. Both the FTS and the water gas shift activity decreased with increasing support content. The catalyst deactivation rate decreased with catalysts containing 24 and 100 g of SiO2 per 100 g of Fe. Secondary reactions (olefin hydrogenation and isomerization) increased with increasing silica content. Hydrocarbon selectivities improved (less gaseous hydrocarbons) with the addition of support, except for the catalyst containing 24SiO2/100Fe. The results were interpreted in terms of interactions between potassium and/or iron with supports.

Original languageEnglish
Pages (from-to)1588-1599
Number of pages12
JournalIndustrial and Engineering Chemistry Research
Volume29
Issue number8
DOIs
Publication statusPublished - Aug 1990

ASJC Scopus subject areas

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

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