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Adsorption of vapors on model nonporous adsorbents with a physically modified surface

Communication 3. Low-temperature adsorption of nitrogen vapors on fused quartz with preadsorbed water, benzene, and methanol

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    The low-temperature adsorption of nitrogen vapors on the surface of quartz, physically modified with water, methanol, and benzene, was investigated.

  2. 2.

    One monomolecular layer of benzene, methanol, or water decreases the adsorption of nitrogen vapors by approximately half in comparison with a pure surface of quartz, which, from the standpoint of the BET theory, is equivalent to an increase in the molecular area of nitrogen.

  3. 3.

    On a hydrated surface of quartz, there are two kinds of adsorption centers accessible to nitrogen molecules and giving bonds with them, differing substantially in energy. The numbers of these centers are approximately the same.

  4. 4.

    The adsorption isobars of nitrogen vapors on a modified quartz surface obtained permit an estimation of the molecular orbitals both of nitrogen on a modified surface and of modifiers on a quartz surface.

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Literature cited

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Authors and Affiliations

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

    Yu. F. Berezkina, M. M. Dubinin & A. I. Sarakhov

Authors
  1. Yu. F. Berezkina
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  2. M. M. Dubinin
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  3. A. I. Sarakhov
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 708–717, April, 1968.

In conclusion, the authors would like to thank K. G. Krasil'nikov for the sample of quartz that he provided us for these investigations.

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Berezkina, Y.F., Dubinin, M.M. & Sarakhov, A.I. Adsorption of vapors on model nonporous adsorbents with a physically modified surface. Russ Chem Bull 17, 687–693 (1968). https://doi.org/10.1007/BF00905732

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  • DOI: https://doi.org/10.1007/BF00905732

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