The dynamics of water vapor sorption on a composite sorbent in the presence of unsorbable components

Preliminary mathematical processing of the experimental data on the dynamics of water vapor adsorption on a composite adsorbent was performed. The approximate time dependence of water vapor pressure was constructed. An analytic equation describing changes in the mean temperature of adsorbent grains as a function of the duration of measurements depending on water vapor pressure was obtained, and an asymptotic approximation equation was suggested. The system under consideration was shown to pass two “diffusion” stages in the dynamics of pressure changes and changes in the mean temperature of grains. The characteristic times of the diffusion stages monotonically increased as the fraction of an unadsorbable component in the gas phase of the system grew.