The effect of moisture on the sorption process of CO2 on coal

► We studied moisture effect on CO2 sorption on coal samples at different temperatures. ► Moisture reduces sorption capacity and influences the heat of sorption. ► Change of heat of sorption is connected with change in pore size distribution. ► Sorption rates of all samples and temperatures decrease with pressure. ► Sorption rates of two samples decrease with moisture, for last one rate increases.