Application Prospect of K Used for Catalytic Removal of NOx, COx, and VOCs from Industrial Flue Gas: A Review

NOx, COx, and volatile organic compounds (VOCs) widely exist in motor vehicle exhaust, coke oven flue gas, sintering pelletizing gas. Potassium species have an excellent promotion effect on various catalytic reactions for the treatment of these pollutants. This work reviews effects potassium reaction processes, including adsorption, desorption, pathway selectivity reaction, recovery active center, properties catalysts, basicity, electron donor characteristics, redox property, stability, strong metal-to support interaction. The suggestions about how to improve are put forward, which involve controlling carriers, content, preparation methods conditions. different alkali metals also compared. article number commonly used ways analyzed by bibliometric VOCs. mechanism is similar; therefore, application prospect coupling control multi-pollutants industrial gas at low-temperature described.