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Ionic-Liquid-Stabilized Rhodium Nanoparticles for Citral Cyclodehydration

Authors

  • Xian-Yang Quek,

    1. Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, Eindhoven (The Netherlands), Fax: (+31) 40-245-5054
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    • These authors contributed equally to this work.

  • Dr. Yejun Guan,

    1. Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, Eindhoven (The Netherlands), Fax: (+31) 40-245-5054
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    • These authors contributed equally to this work.

  • Prof. Rutger A. van Santen,

    1. Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, Eindhoven (The Netherlands), Fax: (+31) 40-245-5054
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  • Prof. Emiel J. M. Hensen

    Corresponding author
    1. Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, Eindhoven (The Netherlands), Fax: (+31) 40-245-5054
    • Schuit Institute of Catalysis, Eindhoven University of Technology, P.O. Box 513, Eindhoven (The Netherlands), Fax: (+31) 40-245-5054
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Abstract

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Smells nice, too: The cyclodehydration of citral is achieved by using rhodium nanoparticles dispersed in an imidazolium-based ionic liquid. p-Cymene, p-α-dimethylstyrene, and limonene are obtained with selectivity greater than 75 %. The interaction between the imidazolium cations and the metal nanoparticles results in an acidic catalyst, which plays a similar function as a mineral acid but has a one order of magnitude higher activity.

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