articleEnvironmental Science & TechnologyJun 9, 2025Closed access

Photothermal-Enhanced Anti-SO 2 Performance of a MoWO x /CeO 2 Catalyst in Low-Temperature NH 3 -SCR

XHXinyu HanLJLiangliang JiangZZZeshu ZhangKLKaijie LiuMBMengyao Bian

University of Science and Technology of China · Chinese Academy of Sciences · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

Cerium-based catalysts for the selective catalytic reduction of NOx with ammonia (NH3-SCR) face significant challenges in practical applications, particularly their poor low-temperature activity and susceptibility to SO2 poisoning. In this study, photothermal catalysis was innovatively applied to the NH3-SCR reaction over MoWOx/CeO2 catalysts, achieving remarkable improvements in the low-temperature performance and SO2 resistance. Under photothermal conditions, the catalyst maintained NOx conversion above 90% at 200 °C, even in the presence of 250 ppm of SO2. Comprehensive characterization revealed that light irradiation significantly enhanced the formation of oxygen vacancies on the catalyst surface and…

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61
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Authors

10

Topics & keywords

Topics
Keywords
  • Catalysis
  • NOx
  • Selective catalytic reduction
  • Adsorption
  • Photothermal therapy
  • Chemistry
  • Ammonia
  • Cerium oxide
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