| 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, Baojuan3; Hao, Qinglan3; Wei XL(魏小林)1,2; Hui, Kwun Nam4; San Hui, Kwan5
| |
| Corresponding Author | Bin, Feng([email protected]) ; San Hui, Kwan([email protected]) |
| Source Publication | FUEL
 |
| 2021-11-15 | |
| Volume | 304Pages:12 |
| ISSN | 0016-2361 |
| Abstract | 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. |
| Keyword | Commercial bacterial cellulose V2O5/HWO catalyst Alkali metal-resistant Poisoning SCR reaction |
| DOI | 10.1016/j.fuel.2021.121445 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000691238500002 |
| WOS Keyword | V2O5-WO3/TIO2 SCR CATALYST ; VANADIA-TITANIA CATALYSTS ; CHEMICAL DEACTIVATION ; SELF-PROTECTION ; NO ; NH3 ; OXIDATION ; PERFORMANCE ; POTASSIUM ; AMMONIA |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Project | National Natural Science Foundation of China[51736010] ; Key Projects of Tianjin Natural Science Foundation[19JCZDJC40100] |
| Funding Organization | National Natural Science Foundation of China ; Key Projects of Tianjin Natural Science Foundation |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Bin, Feng ; San Hui, Kwan |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87363 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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.Rp_Au:Bin, Feng, San Hui, Kwan |
| 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F429.pdf（8363KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment