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Kinetics and Catalysis

, Volume 41, Issue 6, pp 729–736 | Cite as

On the Kinetics of Heterogeneous Acetylene Pyrolysis

  • A. V. Krestinin
Article

Abstract

The independent experimental data on the variation of the rate of carbon film formation on the hot cylinder surface in an acetylene–argon flow are theoretically analyzed. The quantitative model uses the detailed mechanism of the gas-phase pyrolysis of acetylene and takes into account both thermal conductivity and diffusion of the gaseous components in the boundary layer. An increase in the rate of the heterogeneous thermal decomposition of acetylene experimentally observed at high temperatures cannot be described within the framework of the pyrocarbon formation mechanism that accounts for the contribution of the products of the partial gas-phase pyrolysis of acetylene. The experimental data are quantitatively described using the model developed earlier for the growth of soot particles. The quantitative macrokinetics of the heterogeneous growth of the carbon film is determined assuming that the above description correctly reflects an experimental increase in the rate of the heterogeneous reaction.

Keywords

Boundary Layer Thermal Conductivity Pyrolysis Thermal Decomposition Acetylene 
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

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • A. V. Krestinin
    • 1
  1. 1.Institute of Problems of Chemical PhysicsRussian Academy of Sciences, ChernogolvkaMoscow oblastRussia

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