Catalytic performance and attrition strength of spray-dried iron catalysts for slurry phase Fischer-Tropsch synthesis

Dragomir B. Bukur, Victor H. Carreto-Vazquez, Wenping Ma

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Three iron Fischer-Tropsch (F-T) catalysts (100 Fe/3 Cu/5 K/16 SiO 2 in parts by weight) in the form of micro-spherical particles were prepared by spray drying. Their particle size distribution was rather broad, ranging from 5 to 40 μm in diameter, regardless of the source of silica (colloidal silica, tetraethyl orthosilicate, or potassium silicate) employed in their preparation. Catalyst prepared employing colloidal silica had the highest attrition strength among all catalysts studied. After 345 h of testing in a stirred tank slurry reactor its morphology remained essentially unchanged, and it experienced small reductions in the volume mean diameter (5.4%) and generation of particles smaller than 10 μm in diameter was very small (0.7%). Catalytic performance of these catalysts during F-T synthesis was excellent. Syngas conversion was between 71 and 76%, whereas methane selectivity was between 2.0 and 3.5% and that of C5+ hydrocarbons was 78-89% (on C-atom basis).

Original languageEnglish
Pages (from-to)240-247
Number of pages8
JournalApplied Catalysis A: General
Volume388
Issue number1-2
DOIs
Publication statusPublished - 20 Nov 2010

Keywords

  • Attrition strength
  • Fischer-Tropsch synthesis
  • Iron catalyst
  • Spray drying
  • Stirred tank slurry reactor

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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