• Synthesis, characterization and catalytic activity of sulphonated multi-walled carbon nanotubes as heterogeneous, robust and reusable catalysts for the synthesis of bisphenolic antioxidants under solvent-free conditions

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      https://www.ias.ac.in/article/fulltext/jcsc/125/05/1185-1195

    • Keywords

       

      Sulphonated carbon nanotubes; acidic catalyst; bisphenolic antioxidant; solvent-free; reusable catalyst.

    • Abstract

       

      In this study, a simple and green method has been developed for the synthesis of bisphenolic antioxidants by the reaction of 2-tert-butyl-4-methylphenol and aldehydes in the presence of sulphonated multiwalled carbon nanotubes (MWCNTs-SO3H) as heterogeneous, robust and reusable catalysts under solventfree conditions. MWCNTs-SO3H was prepared and characterized by some microscopic and spectroscopic techniques including scanning electron microscopy, transmission electron microscopy, FT-IR spectroscopy and Raman spectroscopy. Acidity of the catalyst was measured by acid-base titration. The catalyst was reused several times without efficient loss of its activity for the preparation of bisphenolic antioxidants. In addition, high yields of the products, relatively short reaction times, being solvent-free and non-toxicity of the catalyst are other worthwhile advantages of the present method.

    • Author Affiliations

       

      Reza Fareghi-Alamdari1 Mohsen Golestanzadeh1 Farima Agend1 Negar Zekri1

      1. Department of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, Tehran, 16765-3454, I. R. Iran
    • Dates

       
  • Journal of Chemical Sciences | News

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