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Porous structure and chemical state of the surface of carbonaceous adsorbents. 2. Nitrogen absorption at 77 K on nonporous carbonaceous adsorbents

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

Conclusions

  1. 1.

    The adsorption isotherms of N2 at 77 K on the surface of carbonaceous adsorbents in the region of low relative pressures are satisfactorily described by the Dubinin-Radushkevich (DR) equation. However, the a0 parameter of the DR equation is not related to the monolayer capacity, and for samples with the most homogeneous surface the quantity a0 substantially exceeds the BET monolayer capacity.

  2. 2.

    The adsorption isotherms calculated per unit surface area of adsorbent can be grouped in terms of the E0 value of the DR equation; this can be regarded as a measure of the degree of energetic heterogeneity of the samples.

  3. 3.

    For samples with E0 < 15.5 kJ/mole, the specific surface areas calculated by the BET method and by the γ and δ methods are similar.

  4. 4.

    The samples of carbonaceous adsorbents with E0 > 15.5 kJ/mole are characterized by surface heterogeneity associated with the presence of micropores.

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Literature cited

  1. A. V. Kiselev and A. A. Isirikyan, Zh. Fiz. Khim.,36, 1164, 1723 (1962).

    Google Scholar 

  2. S. Ross and W. Winkler, J. Colloid Sci.,10, 319 (1955).

    Google Scholar 

  3. S. Ross and W. W. Pultz, J. Colloid Sci.,13, 397 (1958).

    Google Scholar 

  4. A. P. Karnaukhov, A. V. Kiselev, and E. V. Khrapova, Dokl. Akad. Nauk SSSR,92, 361 (1953).

    Google Scholar 

  5. S. J. Gregg and K. S. W. Singh. Adsorption, Surface Area, and Porosity, Academic Press, New York-London (1982).

    Google Scholar 

  6. A. M. Voloshchuk, M. M. Dubinin, T. A. Moskovskaya, et al., Izv. Akad. Nauk SSSR, Ser. Khim., 277 (1988).

  7. M. M. Dubinin, T. I. Izotova, O. Kadlets, and O. L. Krainova, Izv. Akad. Nauk SSSR, Ser. Khim., 1232 (1975).

  8. M. M. Dubinin and L. V. Radushkevich, Dokl. Akad. Nauk SSSR,55, 331 (1947).

    Google Scholar 

  9. M. M. Dubinin, Carbon,21, 356 (1983).

    Google Scholar 

  10. M. G. Kaganer, Dokl. Akad. Nauk SSSR,116, 251 (1957).

    Google Scholar 

  11. J. P. Hobson, J. Chem. Phys.,34, 1850 (1961).

    Google Scholar 

  12. G. F. Cerefollini, Colloid Sci.,4, 59 (1983).

    Google Scholar 

  13. L. N. Gur'yanova and V. V. Gur'yanov, Zh. Fiz. Khim.,63, 1455, 1463 (1984).

    Google Scholar 

  14. M. Jaronec and J. Choma, Mater. Chem. Physics,15, 521 (1986).

    Google Scholar 

  15. W. D. Schaeffer, W. R. Smith, and M. H. Polley, Ind. Eng. Chem.,45, 1721 (1953).

    Google Scholar 

  16. S. Ross and I. D. Morrison, Surf. Sci.,51, 103 (1975).

    Google Scholar 

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Authors
  1. A. M. Voloshchuk
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  2. M. M. Dubinin
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  3. T. A. Moskovskaya
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  4. A. O. Larionova
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  5. L. A. Shilkova
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Additional information

Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2203–2208, October, 1988.

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Voloshchuk, A.M., Dubinin, M.M., Moskovskaya, T.A. et al. Porous structure and chemical state of the surface of carbonaceous adsorbents. 2. Nitrogen absorption at 77 K on nonporous carbonaceous adsorbents. Russ Chem Bull 37, 1979–1983 (1988). https://doi.org/10.1007/BF00953388

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  • DOI: https://doi.org/10.1007/BF00953388

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