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Kinetic curves for a biporous sorbent with linear sorption isotherms with allowance for sorption in transport pores

2. General formulas for spherical granules

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

Conclusions

  1. 1.

    We have obtained exact analytical expressions for the kinetic curves and for local sorbate concentration distribution in a spherical granule of biporous sorbent with linear sorption isotherms and an exponential kinetic function of the micropore zones.

  2. 2.

    We have analyzed the conditions under which it is possible to determine the characteristic diffusion relaxation times in the transport pores and the micropore zones from the first two moments of the experimental kinetic curves.

  3. 3.

    These theoretical expressions can be used to interpret tests of sorption kinetics on granulated zeolites, ion exchangers, and two-phase polymers (block copolymers).

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Literature cited

  1. P. P. Zolotarev and V. V. Ugrozov, Izv. Akad. Nauk SSSR, Ser. Khim., 80 (1981).

  2. A. V. Lykov, Theory of Thermal Conductivity [in Russian], Vysshaya Shkola, Moscow (1967).

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  3. P. P. Zolotarev and V. I. Ulin, Izv. Akad. Nauk SSSR, Ser. Khim., 2367 (1975).

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Authors and Affiliations

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

    S. N. Efremov, P. P. Zolotarev & V. I. Ulin

Authors
  1. S. N. Efremov
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  2. P. P. Zolotarev
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  3. V. I. Ulin
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 86–91, January, 1981.

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Efremov, S.N., Zolotarev, P.P. & Ulin, V.I. Kinetic curves for a biporous sorbent with linear sorption isotherms with allowance for sorption in transport pores. Russ Chem Bull 30, 67–71 (1981). https://doi.org/10.1007/BF00962256

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  • DOI: https://doi.org/10.1007/BF00962256

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