Influence of nonmetallic elements doping on the NH3-SCR activity and properties of Ce20W10Ti100O catalyst via melamine modification

Xiong, Zhibo; Liu, Jiaxing; Guo, Fei; Du, Yanping; Zhou, Fei; Yang, Qinwen; Lu, Wei; Shi, Huancong

doi:10.1016/j.jssc.2023.123879

Cited by 2 publications

(1 citation statement)

References 104 publications

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“…It can be seen that the NH3-TPD profiles of Mn2Ce1Ox and Mn2Ce1Mo0.2Ox catalysts exhibited three desorption peaks (labeled as I, II, and III), which were ascribed to NH3 desorption from weak, medium, and strong acid sites, respectively. The low-temperature desorption peak (peak I) can be attributed to NH3 coordinated on Brønsted acid sites, while the high-temperature (peak II and III) desorption peak was related to the Lewis acid sites [49]. The relative area of all the desorption peaks increased with the addition of Mo, which represented the increase of NH 3 -TPD tests were conducted to explore the relationship between catalytic performance and the surface acidity of the catalyst (as shown in Figure 10).…”

Section: Reducibility and Aciditymentioning

confidence: 99%

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

Zhou

Jiang

Zhang

2023

Metals

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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 °C to 200 °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 °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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Section: Reducibility and Aciditymentioning

confidence: 99%

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

Zhou

Jiang

Zhang

2023

Metals

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Optimizing study on the NH ₃ -SCR activity of Ce-W-Ti@g-C ₃ N ₄ catalyst: influence of graphite carbon nitride types

Xiong,

Zhang,

Guo

et al. 2023

Environmental Technology

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Influence of nonmetallic elements doping on the NH3-SCR activity and properties of Ce20W10Ti100O catalyst via melamine modification

Cited by 2 publications

References 104 publications

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

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

Optimizing study on the NH ₃ -SCR activity of Ce-W-Ti@g-C ₃ N ₄ catalyst: influence of graphite carbon nitride types

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Influence of nonmetallic elements doping on the NH3-SCR activity and properties of Ce20W10Ti100O catalyst via melamine modification

Cited by 2 publications

References 104 publications

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

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

Optimizing study on the NH 3 -SCR activity of Ce-W-Ti@g-C 3 N 4 catalyst: influence of graphite carbon nitride types

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Optimizing study on the NH ₃ -SCR activity of Ce-W-Ti@g-C ₃ N ₄ catalyst: influence of graphite carbon nitride types