Selective catalytic reduction of NO _x with NH₃: opportunities and challenges of Cu-based small-pore zeolites.

ABSTRACT: Zeolites, as efficient and stable catalysts, are widely used in the environmental catalysis field. Typically, Cu-SSZ-13 with small-pore structure shows excellent catalytic activity for selective catalytic reduction of NO _x with ammonia (NH₃-SCR) as well as high hydrothermal stability. This review summarizes major advances in Cu-SSZ-13 applied to the NH₃-SCR reaction, including the state of copper species, standard and fast SCR reaction mechanism, hydrothermal deactivation mechanism, poisoning resistance and synthetic methodology. The review gives a valuable summary of new insights into the matching between SCR catalyst design principles and the characteristics of Cu²⁺-exchanged zeolitic catalysts, highlighting the significant opportunity p

SUBMITTER: Shan Y 

PROVIDER: S-EPMC8566184 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature