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Adsorption of water vapors and the micropore structure of carbon adsorbents. Communication 14. Differential heats of adsorption of water vapors by active carbons

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

Conclusions

  1. 1.

    The isosteric heats of adsorption of water vapors by active carbons in the region of small degrees of filling, where the adsorption isotherms are described by the Langmuir equation, increase with an increase in adsorption due to a decrease in the number of primary adsorption centers with an increase in the temperature.

  2. 2.

    The differential heats of adsorption determined by the derivative (∂p/∂T)θ are almost independent of the adsorption value. The condition θ=const means the constancy of the average number of water molecules adsorbed per primary center.

  3. 3.

    The results obtained are in agreement with a cluster mechanism of adsorption of water vapors by carbon adsorbents.

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Authors and Affiliations

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

    R. Sh. Vartapetyan, A. M. Voloshchuk, M. M. Dubinin & T. S. Yakubov

Authors
  1. R. Sh. Vartapetyan
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  2. A. M. Voloshchuk
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  3. M. M. Dubinin
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  4. T. S. Yakubov
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Translated from Izvestiya Akademii Nauk SSSR. Seriya Khimicheskaya, No. 9, pp. 1934–1938, September, 1987.

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Vartapetyan, R.S., Voloshchuk, A.M., Dubinin, M.M. et al. Adsorption of water vapors and the micropore structure of carbon adsorbents. Communication 14. Differential heats of adsorption of water vapors by active carbons. Russ Chem Bull 36, 1791–1795 (1987). https://doi.org/10.1007/BF00958314

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  • DOI: https://doi.org/10.1007/BF00958314

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