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Palladium nanoparticles in ionic liquids: reusable catalysts for aerobic oxidation of alcohols

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Abstract

The search for more efficient catalytic systems that might combine the advantages of both homogenous (catalyst modulation) and heterogenous catalysis (catalyst recycling) is still the challenge of modern chemistry. With the advent of nanochemistry, it has been possible to prepare soluble analogues of heterogenous catalysts. These nanoparticles are generally stabilized against aggregation into larger less active particles by electrostatic or steric protection. In the present case, we demonstrate the use of room temperature ionic liquids (ILs) as effective agents of dispersion of palladium nanoparticles (prepared from palladium chloride with 5 ± 0.5 nm size distribution) that are recyclable catalysts for aerobic oxidation of alcohols under mild conditions. The particles suspended in ILs show no metal agglomeration or loss of catalytic activity even on prolonged use. An attempt has been made to elucidate the reaction mechanism of aerobic alcohol oxidation using a soluble palladium catalyst.

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Acknowledgments

The authors are grateful to the department of chemistry, R.S College and Bengal Engineering & Science University (BESUS) for all instrumental support and to the University Grants Commission-New Delhi for providing financial support and scholarship to A.M.

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Authors and Affiliations

  1. Department of Chemistry, Ramsaday College, Amta, Howrah, 711 401, India

    Arijit Mondal, Amit Das & Deb Kumar Mukherjee

  2. Department of Chemistry, Bengal Engineering & Science University, Shibpur, India

    Bibhutosh Adhikary

Authors
  1. Arijit Mondal
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  2. Amit Das
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  3. Bibhutosh Adhikary
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  4. Deb Kumar Mukherjee
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Correspondence to Deb Kumar Mukherjee.

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Mondal, A., Das, A., Adhikary, B. et al. Palladium nanoparticles in ionic liquids: reusable catalysts for aerobic oxidation of alcohols. J Nanopart Res 16, 2366 (2014). https://doi.org/10.1007/s11051-014-2366-6

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