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      https://www.ias.ac.in/article/fulltext/jcsc/128/02/0227-0234

    • Keywords

       

      Iron phosphate; molybdenum; ammoxidation; 2-methyl pyrazine.

    • Abstract

       

      The objective of this work is to understand the influence of small amount of Mo=O (1, 3 and 5wt.% MoO3) impregnated on FePO4 and its resultant effect on the acidity was studied for the ammoxidation of 2-methyl pyrazine (2-MP) to 2-cyano pyrazine (2-CP) in the temperature range of 380–420°C. The Mo/FeP catalyst characteristics were evaluated by XRD, HAADF-EDS, TPR and NH3-TPD techniques. Primarily, quartz-type XRD phase was observed for the iron phosphate (FeP). The Mo/FeP exhibits MoO3 and quartztype iron phosphate phase. The interface between Mo particles (20 nm) and FeP was clearly established by HR-TEM in 3Mo/FeP. Furthermore, the average atomic composition revealed by HAADF/EDS for 3Mo/FeP as Fe 30.0%, P 40.0% and Mo 1.6% with Fe/Mo surface XPS ratio 6. The greater 2-CP yield of 68.0% on 3Mo/FeP was attributed to enhanced, moderate acid sites coming from MoO3 and cooperation between Mo and FeP at the interface in terms of oxygen and electron transfer to the reactant (2-MP).

    • Author Affiliations

       

      Nagaraju Pasupulety1 Hafedh Driss2 Yahia Abobakor Alhamed1 2 Abdulrahim Ahmed Alzahrani1 2 Muhammad A Daous1 2 Lachezar Petrov1 N Lingaiah3 P S Sai Prasad3

      1. SABIC Chair of Catalysis, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
      2. Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah 21589, Saudi Arabia
      3. Inorganic & Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500 007, India
    • Dates

       
  • Journal of Chemical Sciences | News

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