Study on catalytic performance and attrition strength of the Ruhrchemie catalyst for the Fischer-Tropsch synthesis in a stirred tank slurry reactor

Wenping Ma, Yunjie Ding, Victor H.Carreto Vázquez, Dragomir B. Bukur

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Activity and selectivity of H2, CO, syngas pretreated and non-pretreated Ruhrchemie catalyst (100 Fe/5 Cu/4.2 K/25 SiO2 on mass basis) used for the Fischer-Tropsch synthesis (FTS) were studied in a stirred tank slurry reactor (STSR). Catalyst activity was the highest after the CO and H2 pretreatments, whereas the non-pretreated catalyst was the least active. Methane selectivities on the CO, syngas reduced and unreduced catalysts were similar (3.9-4.3 wt.%), and lower than that on the H2 reduced catalyst (5.3%). Liquid plus wax (C5+ hydrocarbons) selectivity was high in all four tests (∼80%). The H2 reduced catalyst produced less olefins and had the highest 2-olefin selectivity, whereas the non-pretreated and CO pretreated catalysts had the highest olefin content and the lowest 2-olefin selectivity. Attrition strength of the Ruhrchemie catalyst after 429 h of FTS was found to be adequate under severe hydrodynamic conditions encountered in the STSR. Reduction in the volume moment diameter was 14.3%, whereas, increase in fraction of particles smaller than 10 μm was only 2.6%.

Original languageEnglish
Pages (from-to)99-106
Number of pages8
JournalApplied Catalysis A: General
Volume268
Issue number1-2
DOIs
Publication statusPublished - 10 Aug 2004

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Keywords

  • Attrition strength
  • Fischer-Tropsch synthesis
  • Precipitated iron catalyst
  • Stirred tank slurry reactor

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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