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Reaction Kinetics and Catalysis Letters

, Volume 37, Issue 1, pp 89–93 | Cite as

Structure sensitivity of methane oxidation on Pt/SiO2 of widely varying dispersity

  • M. Kobayashi
  • T. Kanno
  • A. Konishi
  • H. Takeda
Article

Abstract

Methane oxidation on Pt/SiO2 is a structure sensitive reaction at 260–335°C. The higher the percentage exposed, the lower the turnover frequency with decreasing reaction order in PCH4 from 1.0 to 0.5 and slightly decreasing the activation energies of reaction from 90 to 80 kJ/mol, caused by the shift of rate-determining step.

Keywords

Oxidation Physical Chemistry Methane Activation Energy Catalysis 
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.

Abstract

Окисление метана на Pt/SiO2 при 260–335°C является реакцией чувствительной к структуре. Чем выше процент экспозиции, тем ниже атомная каталитическая активность с уменьшающимся порядком реакции по PCH4 от 1,0 до 0,5 и слегка уменьшающейся энергией активации от 90 до 80 кдж/моль. Это вызвано изменением ступени, лимитирующей скорость реакции.

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Copyright information

© Akadémiai Kiadó 1988

Authors and Affiliations

  • M. Kobayashi
    • 1
  • T. Kanno
    • 1
  • A. Konishi
    • 1
  • H. Takeda
    • 1
  1. 1.Department of Industrial ChemistryKitami Institute of TechnologyKitami, HokkaidoJapan

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