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Fischer–Tropsch Synthesis: Studies on the Effect of Support Doping with Si, Mn and Cr on the Selectivity to Alcohols in Ceria Supported Cobalt Catalysts

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An Erratum to this article was published on 20 February 2014

Abstract

Mn and Cr doped CeSi mixed oxides were used as supports for Co and tested for CO hydrogenation. Co/CeSi was found to be more active and significantly more selective to n-alcohols/olefins. An increasing selectivity to n-alcohols and decreasing selectivity to olefins as a function of time on stream was also observed, suggesting a trade-off between those two products. Addition of Mn led to similar behavior, although at slightly lower conversions. Addition of Cr, however, considerably suppressed n-alcohol formation, while it kept selectivities to olefins within a 20–30 % range over more than 250 h of testing, indicating either higher alcohol dehydration activity, or that the presence of Cr ions lowered the hydrogenating activity of Co. The present work indicates that enhanced contact area between Co and the reducible support is likely a key factor for enhancing selectivity to alcohols.

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Acknowledgments

This work received financial support of CTENERG/FINEP-01.04.0525.00. CAER acknowledges the Commonwealth of Kentucky for financial support. M. C. Ribeiro and R. C. Rabelo-Neto thank CNPq and FAPERJ, respectively, for the grants received during this work. The group thanks the LNLS for the assigned beamtime and for the support to perform the XAFS studies.

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Authors and Affiliations

  1. Instituto Nacional de Tecnologia, Rio de Janeiro, RJ, Brazil

    Mauro C. Ribeiro, Israel R. Azevedo, Raimundo C. Rabelo-Neto & Fabio B. Noronha

  2. Center for Applied Energy Research, University of Kentucky, Lexington, KY, USA

    Muthu K. Gnanamani, Gary Jacobs & Burtron H. Davis

Authors
  1. Mauro C. Ribeiro
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  2. Muthu K. Gnanamani
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  3. Israel R. Azevedo
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  4. Raimundo C. Rabelo-Neto
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  5. Gary Jacobs
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  6. Burtron H. Davis
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  7. Fabio B. Noronha
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Corresponding author

Correspondence to Fabio B. Noronha.

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Ribeiro, M.C., Gnanamani, M.K., Azevedo, I.R. et al. Fischer–Tropsch Synthesis: Studies on the Effect of Support Doping with Si, Mn and Cr on the Selectivity to Alcohols in Ceria Supported Cobalt Catalysts. Top Catal 57, 550–560 (2014). https://doi.org/10.1007/s11244-013-0211-2

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  • DOI: https://doi.org/10.1007/s11244-013-0211-2

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