The way to enhance the thermal stability of V2O5-based catalysts for NH3-SCR

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气污染控制中心

	The way to enhance the thermal stability of V2O5-based catalysts for NH3-SCR
	Yan, Zidi; Shan, Wenpo; Shi, Xiaoyan; He, Guangzhi; Lian, Zhihua; Yu, Yunbo; Shan, Yulong; Liu, Jingjing; He, Hong
刊名	CATALYSIS TODAY
	2020-09-15
卷号	355 页码:408-414
关键词	V2O5/WO3-TiO2 Silica Thermal stability Selective catalytic reduction NOx abatement
ISSN号	0920-5861
英文摘要	A series of V2O5/WO3-TiO2 and V2O5/SiO2-WO3-TiO2 catalysts containing 2 wt%, 3.5 wt% and 5 wt% V2O5, respectively, were prepared by impregnation method. The NH3-SCR activity and thermal stability of the catalysts were investigated. It is noted that both V2O5 loading and SiO2 modification could affect the thermal stability of the V2O5/WO3-TiO2 catalysts. Increasing V2O5 loading improved the low temperature SCR activity of the catalysts in fresh state, but high V2O5 loading aggravated the deactivation of the catalysts upon aging. With relatively high V2O5 loading (3.5 wt% and 5 Ind% V2O5), V2O5/SiO2-WO3-TiO2 showed remarkably improved thermal stability than V2O5/WO3-TiO2 NH3-SCR catalysts. The catalysts were characterized by BET, XRD, SEM, Raman, XPS, H-2-TPR and NH3-TPD. The results indicated that high V2O5 loading on V2O5/WO3-TiO2 catalyst can accelerate the phase transition of anatase TiO2 to ruffle TiO2 upon thermal aging, which resulted in the loss of surface area and consequently led to the deactivation, while introduction of silica prevented the phase transition of TiO2, therefore enhancing the thermal stability of the catalysts.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45106]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	Yan, Zidi,Shan, Wenpo,Shi, Xiaoyan,et al. The way to enhance the thermal stability of V2O5-based catalysts for NH3-SCR[J]. CATALYSIS TODAY,2020,355:408-414.
APA	Yan, Zidi.,Shan, Wenpo.,Shi, Xiaoyan.,He, Guangzhi.,Lian, Zhihua.,...&He, Hong.(2020).The way to enhance the thermal stability of V2O5-based catalysts for NH3-SCR.CATALYSIS TODAY,355,408-414.
MLA	Yan, Zidi,et al."The way to enhance the thermal stability of V2O5-based catalysts for NH3-SCR".CATALYSIS TODAY 355(2020):408-414.