Effect of mass ratio on micro-mesoporous Cu-SSZ-13/CeWTi composite catalysts for the selective catalytic reduction of NO with ammonia

Abstract

A series of micro-mesoporous SSZ-13/CexWyTiz composites with different zeolite/oxide ratios were synthesized using a one-step crystallization method.

Recent progress in performance optimization of Cu-SSZ-13 catalyst for selective catalytic reduction of NOx

“…Other Ce-based oxides were also developed as the metal oxide component of the composite catalyst ( Zhao W. Y. et al, 2021 ; Martinovic et al, 2021 ). The Cu-SSZ-13/CeWTi composite catalysts formed a micro-mesoporous structure, and the improved crystal structure of SSZ-13 and high specific surface area and pore volume are conducive to enhancing the low-temperature SCR activity ( Zhao W. Y. et al, 2021 ).…”

“…Other Ce-based oxides were also developed as the metal oxide component of the composite catalyst ( Zhao W. Y. et al, 2021 ; Martinovic et al, 2021 ). The Cu-SSZ-13/CeWTi composite catalysts formed a micro-mesoporous structure, and the improved crystal structure of SSZ-13 and high specific surface area and pore volume are conducive to enhancing the low-temperature SCR activity ( Zhao W. Y. et al, 2021 ). The combination of micropores and mesopores produced more Ce 4+ ions, surface chemisorption oxygen species as well as acid sites to enhance the low-temperature SCR performance and hydrothermal stability of the catalyst.…”