The kinetics of the reaction between CO2 and amine/bentonite particle were estimated over the range of 303-363 K from adsorption data obtained by TGA. The weight percent of amine, reaction temperature, and particle diameter were considered as experimental variables. The sorbent maximum or equilibrium CO2 uptake was found to be linearly dependent on temperature; decreasing with increasing temperature when tested in a 100% CO2 environment Reactivity data for amine/bentonite particle with CO2 were presented and discussed. On the basis of the isothermal TGA results, reaction order and the value of activation energy have been obtained. These kinetic parameters are similar to those reported for MEA and DEA in aqueous solutions. The kinetic model was used to predict the fractional conversion at different temperature exhibiting good agreement with experimental data.