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Journal of Materials Science

, Volume 30, Issue 24, pp 6355–6358 | Cite as

Structural modification of zirconia and its influence on the catalytic activity

  • S. Narayanan
  • M. S. Krishnan
  • V. Vishwanathan
Article

Abstract

X-ray diffraction, differential thermal analysis and specific surface area measurements have been employed to understand the structural properties of ZrO2 and sulphate-modified ZrO2 calcined at different temperatures. Calcination facilitates the transformation of ZrO2 from cubic to monoclinic phase. Addition of SO4 ion to Zr(OH)4 helps to retain the cubic phase up to 550 °C, and to maintain the surface area through a surface complex formation mechanism. The modified ZrO2 acts as a superacid catalyst and enhances the vapour-phase aniline alkylation.

Keywords

Zirconia Catalytic Activity Thermal Analysis Calcination Aniline 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • S. Narayanan
    • 1
  • M. S. Krishnan
    • 1
  • V. Vishwanathan
    • 1
  1. 1.Catalysis SectionIndian Institute of Chemical TechnologyHyderabadIndia

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