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Thermal desorption from discretely heterogeneous surfaces with account for diffusion between various surface regions

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Abstract

Calculations for a discretely heterogeneous surface consisting of patches s1 and s2 with different adsorption heats of particles, Aads have been made. The calculated data show that under equilibrium distribution of particles between s1 and s2 the desorption rate over route II: s1* Aads → s2* Aads → Agas considerably increases compared to the “direct” desorption over route I: s1* Aads → Agas. This effect is ascribed to the entropy variations of adsorbed layers on patches s1 and s2.

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References

  1. G.K. Boreskov: Catalysis, Parts 1 and 2, p. 38–40, Novosibirsk 1971.

  2. L.D. Schmidt: Catal. Rev.,9, 115 (1974).

    Google Scholar 

  3. J.L. Falkoner, J.A. Schwarz: Catal. Rev.,25, 141 (1983).

    Google Scholar 

  4. V.P. Zhdanov: Surf. Sci. Reports,12, N5, 183 (1991).

    Google Scholar 

  5. K. Nagai: Surf. Sci.,176, 193 (1986);187, L616 (1987).

    Google Scholar 

  6. N.V. Ageev, A.Y. Potechin, N.D. Potechina: Poverkhnoct,1, 5 (1991).

    Google Scholar 

  7. W.A. Grant, G. Carter: Vacuum,15, 13 (1965).

    Google Scholar 

  8. A.W. Czanderna, J.R. Biegen, W. Kollin: J. Coll. Interface Sci.,34, 406 (1970).

    Google Scholar 

  9. Y. Toroko, T. Uchijima, Y. Yoneda: J. Catal.,56, 110 (1979).

    Google Scholar 

  10. A. Cordoba, J.J. Luque: Phys. Rev. B.,26, N8, 4028 (1982).

    Google Scholar 

  11. J.L. Sales, G. Zgrablich: Phys. Rev.,3B, N18, 9520 (1987).

    Google Scholar 

  12. A.L. Vishnevskii, V.I. Savchenko: Kinet. Katal.,30, 1451 (1989).

    Google Scholar 

  13. S.L. Kiperman: Introduction to Kinetics of Heterogeneous Catalytic Reactions. Nauka, Moskva 1964.

    Google Scholar 

  14. O.M. Poltorak: Lectures on Chemical Thermodynamics. Vysshaya Shkola, Moskva 1972.

    Google Scholar 

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Authors and Affiliations

  1. Boreskov Institute of Catalysis, 630090, Novosibirsk, Russia

    V. I. Savchenko

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  1. V. I. Savchenko
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Savchenko, V.I. Thermal desorption from discretely heterogeneous surfaces with account for diffusion between various surface regions. React Kinet Catal Lett 49, 251–259 (1993). https://doi.org/10.1007/BF02067689

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  • DOI: https://doi.org/10.1007/BF02067689

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