University of Oulu

Romar, H., Rivoire, E., Tynjälä, P. et al. Top Catal (2017) 60: 1408.

Effect of calcination conditions on the dispersion of cobalt over Re, Ru and Rh promoted Co/γ-Al₂O₃ catalysts

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Author: Romar, Henrik1,2; Rivoire, Eric3; Tynjälä, Pekka1,2;
Organizations: 1Research Unit of Sustainable Chemistry, University of Oulu, Oulu, Finland
2Applied Chemistry, Kokkola University Consortium Chydenius, University of Jyväskylä, Kokkola, Finland
3UFR de Chimie-Biologie, Université Joseph Fourier, Grenoble Cedex 9, France
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
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Language: English
Published: Springer Nature, 2017
Publish Date: 2017-06-15


The effects of catalyst calcination conditions, such as calcination temperature and calcination atmosphere composition on the dispersion of cobalt particles over Co/γ-Al₂O₃ catalysts for Fischer–Tropsch conversion of synthesis gas are studied. A number of catalysts were prepared by incipient wetness impregnation of 20-wt% of cobalt onto γ-Al₂O₃ and promoted with 0.5 wt% ruthenium, rhenium, and rhodium. Metal dispersions of active metals were studied by chemisorption of carbon monoxide. The highest dispersion for Co/γ-Al₂O₃ catalyst was achieved by calcination at 400 °C in a flow of N₂. Co metal dispersion seem to be increased in the calcination steps if a flowing gas was used instead of static calcination conditions. The addition of promoter metals like Ru, Re or Rh enhances the dispersion of the active metal.

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Series: Topics in catalysis
ISSN: 1022-5528
ISSN-E: 1572-9028
ISSN-L: 1022-5528
Volume: 60
Issue: 17-18
Pages: 1408 - 1414
Article number: 822
DOI: 10.1007/s11244-017-0822-0
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: The authors gratefully acknowledge the EU/Interreg Nord program (project no. 304-8488-10) for their financial support within the HighBio2 project. Rhodium nitrate and ruthenium nitrate solutions were provided by Umicore, Germany while Puralox SSCa 5-200 support was provided by Sasol Germany.
Copyright information: © Springer Science+Business Media New York 2017. The final publication is available at Springer via