协同脱除VOCs和NOx的双功能催化剂研究进展OA北大核心CSTPCD

The research progress of VOCs-NH3-SCR(ammonia selective catalytic reduction)catalysts for the synergistic removal of volatile organic gases(VOCs)and NOx was reviewed from the catalyst carrier,active components and additives,and structure and morphology.The synergistic removal effects of different VOCs-NH3-SCR catalysts on VOCs and NOx were summarized,and the removal mechanism of VOCs and NOx was expounded.The synergistic or antagonistic mechanism between reactants under the VOCs-NH3-SCR system was analyzed,and the research and development direction of VOCs-NH3-SCR catalysts was predicted.It is pointed out that the research on the synergistic removal mechanism of VOCs and NOx should be strengthened,and the wide synergistic temperature window region of VOCs and NOx catalytic oxidation should be sought by regulating the catalyst system,clarifying the functional active sites,and targeting the growth and elimination processes of different reactants and intermediate species,so as to improve the selectivity of the catalyst under the condition of synergistic removal of VOCs and NOx.