V2O5-MoO3/TiO2催化剂的NH3-SCR性能:载体的影响

doi:10.11896/cldb.21080131

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Abstract A series of V-Mo/TiO₂ catalysts were prepared by the impregnation method. The influence of crystal structure (rutile phase, anatase phase and the mixed phase of the two phases) and the average particle size of the TiO₂ support on NH₃-SCR performance of catalyst were mainly investigated. The physical and chemical properties and structure of the catalyst were characterized by SEM, XRD,Raman, BET, H₂-TPR, NH₃-TPD and other methods. The results show that the catalyst with smaller average particle size has a high specific surface area and pore volume, which is beneficial to the loading and deposition of the active component VO_x, giving improvement of the denitration performance of the catalyst. The V-Mo/Ti-A1 catalyst with anatase crystal support has the best NH₃-SCR performance due to its excellent specific surface area, redox capacity and abundant acid sites. At the same time, the activity of the mixed crystal support V-Mo/Ti-P25 catalyst is close to 100% in the temperature range of 180—320 ℃.

Key words： catalyst anatase rutile NH₃-SCR

Published: Online: 2023-03-27

CLC number:

X511

Fund:National Natural Science Foundation Youth Fund of China (21806005).

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	Articles by authors
	SONG Liyun
	DENG Shilin
	ZHOU Yiyun
	LI Shuangye
	ZHAN Zongcheng
	LI Jian
	HE Hong

Cite this article:

SONG Liyun,DENG Shilin,ZHOU Yiyun, et al. NH₃-SCR Performance of V₂O₅-MoO₃/TiO₂ Catalyst: Effect of Support[J]. Materials Reports, 2023, 37(6): 21080131-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21080131 OR http://www.mater-rep.com/EN/Y2023/V37/I6/21080131

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