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Adsorption and heat of adsorption of pyridine and benzene vapor on graphitized carbon black

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Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Summary

  1. 1.

    Measurements have been made of the adsorption and differential heat of adsorption isotherms of pyridine vapor on TI thermal black, graphitized at 3000°. On going from benzene to pyridine, the mutual attraction of the molecules in the adsorbed layer is increased, which causes a change in form of the adsorption isotherm at small fillings from convex (benzene) to concave (pyridine), and an increase in the maximum on the heat of adsorption isotherm.

  2. 2.

    The adsorption of benzene and pyridine on graphitized carbon black is, apparently, predominantly localized. The calculated values of adsorption entropy of the benzene and pyridine molecules on graphitized carbon black are quite close.

  3. 3.

    A calculation of the potential energy of adsorption of benzene and pyridine on graphite gave satisfactory agreement with the measured heats of adsorption.

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Authors and Affiliations

  1. Institute of Physical Chemistry, Academy of Sciences of the USSR, USSR

    N. N. Avgul', A. V. Kiselev & I. A. Lygina

Authors
  1. N. N. Avgul'
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  2. A. V. Kiselev
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  3. I. A. Lygina
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Additional information

The authors express their thanks to Z. S. Kraits for furnishing the purified pyridine.

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Avgul', N.N., Kiselev, A.V. & Lygina, I.A. Adsorption and heat of adsorption of pyridine and benzene vapor on graphitized carbon black. Russ Chem Bull 11, 26–30 (1962). https://doi.org/10.1007/BF00907481

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  • DOI: https://doi.org/10.1007/BF00907481

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