The aim of this work is the utilization of carbon monoxide (CO) from steel mill gases for the synthesis of phosgene, which can further react with phenol to building blocks for polymers. The effect of impurities like NOx, CO2, and O-2 on the activity and stability of the activated-carbon (AC) catalyst and the follow-up products should be evaluated. Therefore, new porous carbon catalysts and a new reactor are designed for a systematic kinetic study on the adsorption and desorption behaviors of CO and chlorine (Cl-2) on carbon-based materials to identify AC catalysts with optimum physical properties.