Alkali metal-resistant mechanism for selective catalytic reduction of nitric oxide over V2O5/HWO catalysts

doi:10.1016/j.fuel.2021.121445

	Alkali metal-resistant mechanism for selective catalytic reduction of nitric oxide over V2O5/HWO catalysts
	Kang RN(康润宁)1,2 ; He JY(何君尧)1; Bin F(宾峰)1,2 ; Dou, Baojuan 3; Hao, Qinglan 3; Wei XL(魏小林)1,2 ; Hui, Kwun Nam 4; San Hui, Kwan 5
通讯作者	Bin, Feng(binfeng@imech.ac.cn) ; San Hui, Kwan(k.hui@uea.ac.uk)
发表期刊	FUEL
	2021-11-15
卷号	304 页码:12
ISSN	0016-2361
摘要	A series of V2O5/HWO catalysts are prepared by hydrothermal and impregnation methods using different precursors, among which the V2O5/HWO-C catalyst exhibited the optimal NH3-SCR performance. Compared to oxalic acid (O) and water (W), commercial bacterial cellulose (C) as a precursor can firstly achieve a more controllable synthesis to form hexagonal WO3 (HWO) of V2O5/HWO-C catalyst. Various characterization (XRD, N-2-BET, TEM, SEM, XPS, EDX mapping, and NH3/NO-TPD-MS) indicate that a higher specific surface area, abundant active oxygen and surface acidity result from the V2O5/HWO-C catalyst. The reason is that HWO-C has an excellent and smooth rod-shaped morphology, which promotes high dispersion of V2O5 on its surface. In situ IR results show that the SCR follows the Langmuir-Hinshelwood (L-H) mechanism, where absorbed NOx intermediate species are formed on the V2O5 and react with the NH4+ and NH3abs groups of V2O5 and HWO. After loading 1.75 wt% K+, the obtained K-V2O5/HWO-C catalyst exhibits effective resistance to K poisoning and SO2, and retains 78 % NOx conversion efficiency at 360 degrees C after 10 h, attributed to the effective capture of K+(1.04 wt %) in HWO-C channels via a new pathway, although approximately 0.71 wt% K+ are located on HWO-C external surface with weak bonding to V2O5.
关键词	Commercial bacterial cellulose V2O5/HWO catalyst Alkali metal-resistant Poisoning SCR reaction
DOI	10.1016/j.fuel.2021.121445
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000691238500002
关键词[WOS]	V2O5-WO3/TIO2 SCR CATALYST ; VANADIA-TITANIA CATALYSTS ; CHEMICAL DEACTIVATION ; SELF-PROTECTION ; NO ; NH3 ; OXIDATION ; PERFORMANCE ; POTASSIUM ; AMMONIA
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
资助项目	National Natural Science Foundation of China[51736010] ; Key Projects of Tianjin Natural Science Foundation[19JCZDJC40100]
项目资助者	National Natural Science Foundation of China ; Key Projects of Tianjin Natural Science Foundation
论文分区	一类
力学所作者排名	1
RpAuthor	Bin, Feng ; San Hui, Kwan
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87363
专题	高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Tianjin Univ Sci & Technol, Tianjin 300457, Peoples R China; 4.Univ Macau, Inst Appl Phys & Mat Engn, Ave Univ, Taipa, Macao, Peoples R China; 5.Univ East Anglia, Fac Sci, Sch Engn, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England
推荐引用方式 GB/T 7714	Kang RN,He JY,Bin F,et al. Alkali metal-resistant mechanism for selective catalytic reduction of nitric oxide over V2O5/HWO catalysts[J]. FUEL,2021,304:12.
APA	康润宁.,何君尧.,宾峰.,Dou, Baojuan.,Hao, Qinglan.,...&San Hui, Kwan.(2021).Alkali metal-resistant mechanism for selective catalytic reduction of nitric oxide over V2O5/HWO catalysts.FUEL,304,12.
MLA	康润宁,et al."Alkali metal-resistant mechanism for selective catalytic reduction of nitric oxide over V2O5/HWO catalysts".FUEL 304(2021):12.

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