This article is cited in 2 papers

Experimental instruments and technique

Kinetics of water vapor diffusion in activated carbon

D. M. Kurmasheva, P. O. Kapralov, V. D. Travkin, V. G. Artemov, V. I. Tikhonov, A. A. Volkov

Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow

Abstract: We describe an experimental method for studying rapid processes of water vapor sorption by fine-dispersed and porous materials. The concentration of gas-phase water molecules is detected during adsorption by a laser-diode spectrometer. The kinetic pressure curves are recorded in a time window of 10$^{-1}$ to 10$^3$ s and are analyzed using analogy of the diffusion flow with the electric current in a branched RC circuit. The proposed model establishes the relation between the kinetics curves being measured and the structural parameters of the medium.

Received: 02.08.2013

 English version: Technical Physics, 2014, 59:5, 766–770

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