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Aerobic Oxidation of Cyclohexane Catalyzed by Flame-Made Nano-Structured Co/SiO2 Materials

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Abstract

The aerobic oxidation of cyclohexane was studied at 130 °C in the presence of a Co/SiO2 catalyst, synthesized by flame-spray pyrolysis. Characterization of the material indicates that at low Co-loadings, CoII is predominantly present as tetrahedral species, whereas at higher loadings also small amounts of octahedral species can be found at the surface of the agglomerated nano-particles. Catalytic experiments demonstrate high activity, causing a complete in situ deperoxidation of the intermediate cyclohexylhydroperoxide. Hot-separation and catalyst-recycle tests corroborate the heterogeneous nature of the catalyst.

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Acknowledgments

NT and IH acknowledge the financial contributions by the Swiss National Science Foundation (grant 200021_124698 2 and 206021_128688 3) and are grateful for the help from the company ILAG (Lachen, Switzerland) in coating high pressure reactors with Teflon®; BS is grateful for the financial support by ETH Research Grant TH-41 06-1. The authors thank Prof. Sotiris E. Pratsinis for useful discussions.

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Authors and Affiliations

  1. Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093, Zurich, Switzerland

    Natascia Turrà, Andrea Blanco Acuña, Bernhard Mayr-Schmölzer, Philipp Mania & Ive Hermans

  2. Department of Mechanical Engineering, Institute of Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092, Zurich, Switzerland

    Björn Schimmöller

Authors
  1. Natascia Turrà
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  2. Andrea Blanco Acuña
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  3. Björn Schimmöller
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  4. Bernhard Mayr-Schmölzer
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  5. Philipp Mania
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  6. Ive Hermans
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Corresponding author

Correspondence to Ive Hermans.

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Dedicated to the 80th birthday of Prof. Dr. Robert K. Grasselli.

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Turrà, N., Acuña, A.B., Schimmöller, B. et al. Aerobic Oxidation of Cyclohexane Catalyzed by Flame-Made Nano-Structured Co/SiO2 Materials. Top Catal 54, 737–745 (2011). https://doi.org/10.1007/s11244-011-9678-x

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