Fractal Theory for the Compensation Effect Observed in a Surface Diffusion Process Studied Using Deuteron NMR

Sean P Rigby

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The translational motion of benzene mols. on the surfaces of a no. of different types of materials, such as SiO2 and a Pt/SiO2 catalyst, was studied using deuteron NMR techniques. When the temp. dependence of the correlation time for this motion was correlated using an Arrhenius type expression, a compensation effect was obsd. This means that there was a linear relation between the activation energy and the natural logarithm of the pre-exponential factor. The origin of this effect was explained by a theory for the mol. motion based on the fractal nature of the surfaces over which the benzene mols. are moving. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)1613-1618
Number of pages6
JournalLangmuir
Volume18
Issue number5
Publication statusPublished - 2002

Keywords

  • benzene translational motion platinum silica catalyst
  • Fractals
  • Kinetic and thermodynamic compensation effects (fractal theory for compensation effect obsd. in surface diffusion process studied using deuteron NMR)
  • and Pt/SiO2 catalyst using deuteron NMR)
  • Diffusion (surface
  • fractal theory compensation effect surface diffusion NMR
  • NMR (translational motion of benzene on surfaces of SiO2
  • Pd/SiO2
  • fractal theory for compensation effect obsd. in surface diffusion process studied using deuteron NMR)

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