1. Home
    2. Journals
    3. Journal of Chemical Sciences
    4. Volume 125
    5. Issue 3

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/125/03/0679-0686

    • Keywords

       

      Iron-based Fischer-Tropsch catalysts; TPR; TPD; carburization.

    • Abstract

       

      Temperature-programmed reduction (TPR) and temperature-programmed desorption (TPD) were used to study the effects of Cu and Ca promotion on Fe-Zn-based Fischer-Tropsch catalysts. The reduction temperature for Fe2O3 → Fe3O4 was unaffected by Ca addition but decreased when promoted with Cu. Fe-Zn promoted with Cu and Ca showed even much lower reduction temperature for Fe2O3→Fe3O4. Ca promotion enhances carburization and increases surface acidity and basicity of the Fe-Zn oxide precursor. While Cu inhibits carburization and decreases the surface acidity and basicity of the Fe-Zn oxide precursor. The implications of these effects on the application of catalysts for FT are discussed.

    • Author Affiliations

       

      Olusola O James1 2 Biswajit Chowdhury2 Sudip Maity1

      1. Liquid Fuels Section, Central Institute of Mining and Fuels Research (CIMFR), Digwadih Campus, PO FRI 828 108, Dhanbad, India
      2. Applied Chemistry Department, Indian School of Mines, Dhanbad 826 004, India

    • Dates

       
      Published
      May 2013
      Manuscript received
      2 August 2012
      Manuscript revised
      4 October 2012
      Accepted
      8 November 2012

  • Journal of Chemical Sciences | News

© 2022-2023 Indian Academy of Sciences, Bengaluru.

Contact | Site index