Investigation of Cu-doped MnCeOx in PTFE catalytic fiber for synergistic removal of CB and NO at low temperature

The synergistic removal of multiple pollutants from flue gas has attracted growing interest in recent years. In this study, Cu-doped MnCeO_x catalysts were synthesized via an impregnation method and integrated into PTFE fibers using a split-film process to enable the simultaneous removal of chlorobenzene (CB) and nitrogen oxide (NO). Among the catalysts tested, Mn₂Ce₁Cu_0.6O_x exhibited the highest performance, achieving 90 % CB degradation and 100 % NO conversion at 180 °C. The PTFE-based catalytic fibers also demonstrated excellent removal efficiency, reaching 83.7 % for dioxins at the same temperature. A possible reaction mechanism is proposed in which the NH₃-SCR process facilitates CB oxidation by generating reactive intermediates. Cu doping was found to enhance the density of acid sites and promote the ring-opening of CB, thereby suppressing chlorine accumulation and improving catalyst stability. These findings provide valuable insights for the development and optimization of catalytic bag filters for the efficient, synergistic removal of multiple pollutants from industrial emissions.