Overview of the Adsorption and Transport Properties of Water, Ions, Carbon Dioxide, and Methane in Swelling Clays

It is quite challenging to understand the details of complex mechanisms involved in swelling processes clays such as montmorillonite a function relative humidity (RH), and adsorption transport CO2 CH4 clays. Here we present review molecular simulation results for clay systems which not only compare well with experimental data but also provide deep insights into these mechanisms. The presence hardly affects distribution mobility interlayer water ions systems. Under all conditions, stable basal d-spacing was mainly determined by type counterion region amount each hydration state almost independent RH layer charge. uptake 1W Na-clay much smaller compared that CO2. adsorbate generally increased increasing hydration/RH because associated region. Interestingly, high-charge dramatically decreased, cation. preferential over plays an important role diffusion processes. Such understanding successful mitigation climate change via storage anthropogenic geological formations.