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    • A method for increasing the surface area of perovskite-type oxides

      S Banerjee V R Choudhary

      Volume 112 Issue 5 October 2000 pp 535-542

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/112/05/0535-0542

    • Keywords

       

      ABO3-type perovskite oxides; LaCoO3; LaMnO3; hydrothermal treatment; catalytic combustion of methane

    • Abstract

       

      A method based on hydrothermal treatments is described for increasing the surface area of sintered ABO3-type perovskite oxides. Influence of hydrothermal treatments, such as water treatment at 125–300°C under autogeneous pressure and steam treatment at 350–800°C, to low surface area (or sintered) LaCoO3 and LaMnO3 perovskite oxides on their surface properties (viz. surface area, crystal size and morphology and surface La/(Co or Mn) ratio) and also catalytic activity in complete combustion of methane at different temperatures (450–600°C) has been thoroughly investigated. The hydrothermal treatments result in the activation of the perovskite oxides by increasing their surface area very markedly.

    • Author Affiliations

       

      S Banerjee1 V R Choudhary1

      1. Chemical Engineering Division, National Chemical Laboratory, Pune - 411 008, India

    • Dates

       
      Published
      October 2000
      Manuscript received
      13 March 2000
      Manuscript revised
      25 April 2000

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