• Mixed cerium nanooxides as efficient and selective C-alkylation catalysts for gas phase methylation of phenol

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      https://www.ias.ac.in/article/fulltext/jcsc/132/0055

    • Keywords

       

      Ce-Fe; Ce-V/Ce-Zr oxides; vapour phase reaction; phenol methylation

    • Abstract

       

      Phenol methylation is an acid-base catalysed reaction that produces valuable chemicals that are used in fine chemical synthesis. Methylation of phenol was studied over iron, vanadium and zirconium doped cerium nano oxides under optimized reaction conditions such as catalyst weight 0.5 g, phenol/methanol molar ratio 1/3 and WHSV 1.4 h-1 at 300°C and 2 h. 80-90% conversion and 90% ortho selectivity are achieved with all prepared mixed oxides. o-cresol and 2,6-xylenol are the major products of the reaction. Catalytic activity depends on the number and strength of moderate and strong acidic sites on the surface which in turn depends on the nature and composition of the catalyst. Structural stability of the catalyst substantiates the heterogeneous nature of the catalyst

    • Author Affiliations

       

      CHRISTY KUNJACHAN MANJU KURIAN1

      1. Department of Chemistry, Mar Athanasius College, Kothamangalam, Kerala 686 666, India
    • Dates

       
  • Journal of Chemical Sciences | News

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