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Kinetics of nonisothermal adsorption by biporous adsorbents. Communication 8. Analysis of the precision of methods of determining the parameters of heat and mass transfer from the statistical moments of kinetics and temperature curves

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

Conclusions

  1. 1.

    In determining the parameters of heat and mass transport from kinetic and temperature curves, the most reliable results are obtained when the kinetic and temperature curves are analyzed together using the moments of the first order.

  2. 2.

    Analysis of the temperature curve during adsorption of both xenon and n-butane on CaA zeolite affords the possibility of determining the rate-determining step of the adsorption process and of computing the temperature component Mq and the coefficient of heat loss h, but does not allow the coefficients of mass transfer to be computed. Using this method to determine the parameters of mass and heat transfer requires very high precision in the measurement of the temperature curve.

  3. 3.

    In the adsorption of xenon onto finely crystalline CaA zeolite, the precision of the determination of the kinetic curve is sufficient for separating the heat and the diffusional components using the moments of the first and second orders, and in the adsorption of n-butane the lower precision due to the influence of the nonlinearity of the adsorption isotherms makes a complete analysis of the process from the kinetic curve impossible.

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Authors and Affiliations

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

    A. M. Voloshchuk, V. A. Gorlov & M. M. Dubinin

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  1. A. M. Voloshchuk
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  2. V. A. Gorlov
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  3. M. M. Dubinin
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 725–730, April, 1987.

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Voloshchuk, A.M., Gorlov, V.A. & Dubinin, M.M. Kinetics of nonisothermal adsorption by biporous adsorbents. Communication 8. Analysis of the precision of methods of determining the parameters of heat and mass transfer from the statistical moments of kinetics and temperature curves. Russ Chem Bull 36, 655–660 (1987). https://doi.org/10.1007/BF00962291

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  • DOI: https://doi.org/10.1007/BF00962291

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