Mn-Ce Catalysts/LDPC Modified by Mo for Improving NH3-SCR Performance and SO2 Resistance at Low Temperature

被引：2
|
作者：
Zhou, Tao [1 ]
Jin, Jiang [1 ]
Zhang, Hua [1 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 211816, Peoples R China
来源：
METALS | 2023年 / 13卷 / 05期
关键词：
metal oxide catalyst; NH3-SCR; dust removal; denitrification; SELECTIVE CATALYTIC-REDUCTION; V2O5-WO3/TIO2; CATALYST; FLUE-GAS; NOX; NH3; SCR; REMOVAL; TOLERANCE; FILTER; DECOMPOSITION;
D O I：
10.3390/met13050938
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mn-Ce catalysts modified by Mo were loaded on low-density porous ceramics (LDPC) for simultaneous denitrification and dust removal. The Mn-Ce-Mo catalyst on LDPC had nearly 99% NOx conversion efficiency from 120 degrees C to 200 degrees C and still maintained more than 90% NOx conversion efficiency when the filtration velocity reached to 4 m/min. Mn-Ce-Mo catalysts/LDPC not only exhibited excellent catalytic performance at low temperature, they also exhibited good resistance to H2O and SO2. The NOx conversion efficiency remained above 89% at 160 degrees C when the flue gas contained 100 ppm SO2 and 7 vol.% H2O. The analysis of NH3-TPD and XPS confirmed that Mn2Ce1Ox catalysts modified with Mo had the stronger surface acidity and more adsorbed oxygen, leading to higher NH3-SCR activity and better resistance to SO2 and H2O.
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页数：14
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