A theoretical analysis of gas absorption with two-phase absorbents in the cases, when a component of gas phase reacts chemically with a component of solid phase after its dissolution in liquid phase, is presented. The interphase mass transfer in system with two interphase surfaces (gas-liquid and liquid-solid) is analyzed. The influence of the mass transfer resistant at the phase boundaries on the absorption mechanism is investigated. The kinetic models of gas absorption of high and low soluble gases is presented. (C) 2011 Elsevier Ltd. All rights reserved.