Unveiling the distinct effect mechanisms of H2O: Aggravating and mitigating SO2 poisoning of Fe2O3 and α-MnO2 catalysts in low-temperature NH3-SCR

JinXiu WANG; Jianyi Zhang; Hongyu Zhao; Xuan Jia; Jinsheng Chen

doi:10.1039/d5ta09146b

January 1, 2026Journal of Materials Chemistry A

Unveiling the distinct effect mechanisms of H2O: Aggravating and mitigating SO2 poisoning of Fe2O3 and α-MnO2 catalysts in low-temperature NH3-SCR

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Key Points

This research aims to understand how H2O affects SO2 poisoning in specific catalysts during the low-temperature SCR process.
Analyses of SO2 and H2O interactions with Fe2O3 and α-MnO2 catalysts
Investigation of catalytic performance under various conditions
Examination of dual functions of H2O
H2O was found to significantly influence SO2 poisoning mechanisms
Certain conditions amplified the negative effects of SO2 on catalytic performance
Other conditions allowed H2O to mitigate the adverse effects of SO2

Implication

Elucidating H2O's dual role in influencing SO2 poisoning pathways in low-temperature catalyst systems, suggesting design improvements.

Abstract

Elucidating the mechanisms of coexisting SO2 and H2O, especially H2O’s dual function in aggravating or mitigating SO2 poisoning pathways, is pivotal for the rational design of high-performance, poison-resistant low-temperature SCR...

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Cite This Study

WANG et al. (2026) studied this question.

synapsesocial.com/papers/698435c9f1d9ada3c1fb501b https://doi.org/10.1039/d5ta09146b

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Unveiling the distinct effect mechanisms of H2O: Aggravating and mitigating SO2 poisoning of Fe2O3 and α-MnO2 catalysts in low-temperature NH3-SCR

Key Points

Implication

Abstract

Discussion

Cite This Study

Unveiling the distinct effect mechanisms of H2O: Aggravating and mitigating SO2 poisoning of Fe2O3 and α-MnO2 catalysts in low-temperature NH3-SCR

Key Points

Implication

Abstract

Discussion

Cite This Study

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