Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (4): 704-710.DOI: 10.1016/S1872-2067(11)60503-2

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Combustion-derived CuO nanoparticles: An effective and environmentally benign catalyst in the synthesis of aromatic nitriles from aromatic aldehydes

Belladamadu Siddappa ANANDAKUMAR, Muthukur Bhojegowd Madhusudana REDDY, Chikka Nagaiah THARAMANI, Mohamed Afzal PASHA, Gujjarahalli Thimmanna CHANDRAPPA   

  1. a Department of Chemistry, Bangalore University, Bangalore-560001, India;
    b Department of Chemistry, Ruhr Universität Bochum, Bochum, Germany
  • Online:2013-04-23 Published:2013-04-24
  • Supported by:

    This work was supported by University Grant Commission, India.

Abstract:

CuO nanoparticles were synthesized using an energy-efficient and rapid solution combustion technique with malic acid employed as a fuel. The combustion-derived CuO nanoparticles were used as catalysts in a one-pot synthesis of aromatic nitriles from aromatic aldehydes and hydroxylamine hydrochloride. The catalyst was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, transmission electron microscopy, and Brunauer-Emmett-Teller surface area analysis. The catalytic activity of the CuO nanoparticles in the synthesis of aromatic nitriles from aromatic aldehydes was evaluated. The present protocol offers the advantages of a clean reaction, simple methodology, short reaction duration (1-2 min), and high yield (85%-98%). The catalytic activity of the CuO nanoparticles was found to be higher than that of bulk CuO powder under the same conditions. The catalyst can also be recovered and reused up to four times with no significant loss of catalytic activity. The present approach is inexpensive and is a convenient technique suitable for industrial production of CuO nanoparticles and nitriles.

Key words: Copper oxide, Nanoparticle, Solution combustion, Nitrile, Aldehyde, Hydroxyl amine