Nature Communications (Aug 2022)

Strikingly distinctive NH3-SCR behavior over Cu-SSZ-13 in the presence of NO2

  • Yulong Shan,
  • Guangzhi He,
  • Jinpeng Du,
  • Yu Sun,
  • Zhongqi Liu,
  • Yu Fu,
  • Fudong Liu,
  • Xiaoyan Shi,
  • Yunbo Yu,
  • Hong He

DOI
https://doi.org/10.1038/s41467-022-32136-z
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 10

Abstract

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Cu-SSZ-13 zeolites are highly active for standard NH3-SCR, but their activity is unexpectedly inhibited in the presence of NO2. This work demonstrates that strong oxidation by NO2 forces Cu ions to exist mainly as CuII species with low mobility, which is responsible for this distinctive behavior.