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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/118/01/0047-0055

    • Keywords

       

      Automatic TPR; ceria, three way catalysis

    • Abstract

       

      A completely automated temperature-programmed reaction (TPR) system for carrying out gas-solid catalytic reactions under atmospheric flow conditions is fabricated to study CO and hydrocarbon oxidation, and NO reduction. The system consists of an all-stainless steel UHV system, quadrupole mass spectrometer SX200 (VG Scientific), a tubular furnace and micro-reactor, a temperature controller, a versatile gas handling system, and a data acquisition and analysis system. The performance of the system has been tested under standard experimental conditions for CO oxidation over well-characterized Ce1−−x−y Ptx(La/Y)yO2-δ catalysts. Testing of 3-way catalysis with CO, NO and C2H2 to convert to CO2, N2 and H2O is done with this catalyst which shows complete removal of pollutants below 325°C. Fixed oxide-ion defects in Pt substituted Ce1−y(La/Y)yO2−y/2 show higher catalytic activity than Pt ion-substituted CeO2.

    • Author Affiliations

       

      Arup Gayen1 Tinku Baidya1 G S Ramesh2 R Srihari1 M S Hegde1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012
      2. Techno Science Instruments, Bangalore - 560 021
    • Dates

       
  • Journal of Chemical Sciences | News

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