Study on improving lead poisoning resistance of SCR catalysts for iron-steel sintering machines

LIU Yanbin; KONG Zhenhua; QI Yongsheng; ZHANG Zhidi; YANG Yong; ZHOU Mei; LI Han

doi:10.7513/j.issn.1004-7638.2026.03.015

Volume 47 Issue 3

Jun. 2026

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LIU Yanbin, KONG Zhenhua, QI Yongsheng, ZHANG Zhidi, YANG Yong, ZHOU Mei, LI Han. Study on improving lead poisoning resistance of SCR catalysts for iron-steel sintering machines[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 134-140, 148. doi: 10.7513/j.issn.1004-7638.2026.03.015

Citation:

LIU Yanbin, KONG Zhenhua, QI Yongsheng, ZHANG Zhidi, YANG Yong, ZHOU Mei, LI Han. Study on improving lead poisoning resistance of SCR catalysts for iron-steel sintering machines[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 134-140, 148. doi: 10.7513/j.issn.1004-7638.2026.03.015

Citation:

LIU Yanbin, KONG Zhenhua, QI Yongsheng, ZHANG Zhidi, YANG Yong, ZHOU Mei, LI Han. Study on improving lead poisoning resistance of SCR catalysts for iron-steel sintering machines[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(3): 134-140, 148. doi: 10.7513/j.issn.1004-7638.2026.03.015

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Study on improving lead poisoning resistance of SCR catalysts for iron-steel sintering machines

doi: 10.7513/j.issn.1004-7638.2026.03.015

1.
State Energy Group Henan Electric Power Co., Ltd., Zhengzhou, 450000, Henan, China
2.
China Energy Longyuan Catalyst Jiangsu Co, . Ltd., Wuxi 214000, Jiangsu, China

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Received Date: 2025-09-22
Accepted Date: 2025-12-29
Rev Recd Date: 2025-12-12
Publish Date: 2026-06-29

Abstract

Abstract

Powder catalysts were synthesized via the impregnation method to investigate the effect of Mo and Ce doping on improving the lead poisoning resistance of V-W/Ti catalysts. The physicochemical properties of the catalysts were characterized using BET, XPS, H₂-TPR, and NH₃-TPD. The results showed that doping with Mo and Ce enhanced the low-temperature reducibility of the catalysts, provide additional acid sites, and alleviated the detrimental effects of lead poisoning on the pore structure and oxygen vacancies. After exposure to high concentrations of lead, the V-W-MoCe/Ti-Pb catalyst still maintained excellent low-temperature denitration activity and a broad operating temperature window between 150–400 °C. Specifically, the NOₓ conversion exceeded 90% in the range of 250–400 °C. When the decay of activity reached 20%, the lead poisoning tolerance of the molded V-W-MoCe/Ti catalyst was 5.7 times higher than that of the V-W/Ti catalyst. These findings provide valuable insights for the application and promotion of such catalysts in denitrating flue gases containing lead and other heavy metals.
- iron-steel sintering flue gas,
- lead poisoning,
- denitration,
- poisoning resistance

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References(26)

References

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