Ruthenium promoted cobalt–alumina catalysts for the synthesis of high-molecular-weight solid hydrocarbons from CO and hydrogen

O. A. Kungurova, N. V. Shtertser, G. K. Chermashentseva, I. I. Simentsova, A. A. Khassin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The effect of the ruthenium promotion of Fischer–Tropsch (FT) cobalt–alumina catalysts on the temperature of catalyst activation reduction and catalytic properties in the FT process is studied. The addition of 0.2–1 wt % of ruthenium reduces the temperature of reduction activation from 500 to 330–350°C while preserving the catalytic activity and selectivity toward C5+ products in FT synthesis. FT ruthenium-promoted Co–Al catalysts are more selective toward higher hydrocarbons; the experimental value of parameter αASF of the distribution of paraffinic products for ruthenium-promoted catalysts is 0.93–0.94, allowing us to estimate the selectivity toward C20+ synthetic waxes to be 48 wt %, and the selectivity toward C35+ waxes to be 23 wt %. Ruthenium-promoted catalysts also exhibit high selectivity toward olefins.

Original languageEnglish
Pages (from-to)23-30
Number of pages8
JournalCatalysis in Industry
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • cobalt catalysts
  • Fischer–Tropsch synthesis
  • promotion
  • reductive activation
  • ruthenium
  • OXIDE
  • PRODUCT DISTRIBUTION
  • STATE
  • REDUCIBILITY
  • SUPPORT
  • Fischer-Tropsch synthesis
  • KINETICS
  • GAS
  • FISCHER-TROPSCH SYNTHESIS

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