Knowledge Management System Of Institute of process engineering,CAS
| Interaction between support and V2O5 in the selective catalytic reduction of NO by NH3 | |
| Alternative Title | Catal. Sci. Technol. |
| Guo, Feng1,2; Yu, Jian1; Chu, Mo2; Xu, Guangwen1 | |
| 2014 | |
| Source Publication | CATALYSIS SCIENCE & TECHNOLOGY
 |
| ISSN | 2044-4753 |
| Volume | 4Issue:7Pages:2147-2155 |
| Abstract | V2O5-based catalysts for NH3-selective catalytic reduction (SCR) have been prepared by an impregnation method using different supports including nano-TiO2, meso-TiO2, nano-ZrO2, meso-Al2O3 and meso-SiO2. Activity evaluations clarified that V2O5/meso-TiO2 possessed the highest activity and a wide activitytemperature window of 240-400 degrees C, while V2O5/ nano-TiO2 and V2O5/ nano-ZrO2 had activities were the next most active to V2O5/ meso-TiO2. The realized NO removal was lowest over V2O5/meso-Al2O3 and V2O5/ meso-SiO2. In flue gas with 900 ppm SO2 and 10 vol.% steam the catalyst V2O5/meso-TiO2 showed the best activity stability at 350 degrees C and 240 degrees C. Characterizing the catalysts revealed that the differences in their redox properties and acidities should be responsible for their different activities and poisoning resistance. The dispersion of V2O5 on all the supports obviously decreased its H-2-reduction temperature, and the lower the reduction temperature, the better the catalyst appeared to be in activity and poisoning resistance. Overall, only the TiO2 support and its consequent interactions with V2O5 guaranteed the expected good activity and also poisoning resistance for NH3-SCR of NO. The higher pore volume of meso-TiO2 enabled a larger tolerance capacity to ammonium sulfate and sulfite so that this catalyst had better low-temperature activity stability.; V2O5-based catalysts for NH3-selective catalytic reduction (SCR) have been prepared by an impregnation method using different supports including nano-TiO2, meso-TiO2, nano-ZrO2, meso-Al2O3 and meso-SiO2. Activity evaluations clarified that V2O5/meso-TiO2 possessed the highest activity and a wide activitytemperature window of 240-400 degrees C, while V2O5/ nano-TiO2 and V2O5/ nano-ZrO2 had activities were the next most active to V2O5/ meso-TiO2. The realized NO removal was lowest over V2O5/meso-Al2O3 and V2O5/ meso-SiO2. In flue gas with 900 ppm SO2 and 10 vol.% steam the catalyst V2O5/meso-TiO2 showed the best activity stability at 350 degrees C and 240 degrees C. Characterizing the catalysts revealed that the differences in their redox properties and acidities should be responsible for their different activities and poisoning resistance. The dispersion of V2O5 on all the supports obviously decreased its H-2-reduction temperature, and the lower the reduction temperature, the better the catalyst appeared to be in activity and poisoning resistance. Overall, only the TiO2 support and its consequent interactions with V2O5 guaranteed the expected good activity and also poisoning resistance for NH3-SCR of NO. The higher pore volume of meso-TiO2 enabled a larger tolerance capacity to ammonium sulfate and sulfite so that this catalyst had better low-temperature activity stability. |
| Keyword | Oxide Catalysts Nitric-oxide Mixed Oxides Ammonia Scr Zirconia Removal Vanadia Spectroscopy Temperatures |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1039/c4cy00098f |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | OXIDE CATALYSTS ; NITRIC-OXIDE ; MIXED OXIDES ; AMMONIA ; SCR ; ZIRCONIA ; REMOVAL ; VANADIA ; SPECTROSCOPY ; TEMPERATURES |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| WOS ID | WOS:000337132100034 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/10907 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Feng,Yu, Jian,Chu, Mo,et al. Interaction between support and V2O5 in the selective catalytic reduction of NO by NH3[J]. CATALYSIS SCIENCE & TECHNOLOGY,2014,4(7):2147-2155. |
| APA | Guo, Feng,Yu, Jian,Chu, Mo,&Xu, Guangwen.(2014).Interaction between support and V2O5 in the selective catalytic reduction of NO by NH3.CATALYSIS SCIENCE & TECHNOLOGY,4(7),2147-2155. |
| MLA | Guo, Feng,et al."Interaction between support and V2O5 in the selective catalytic reduction of NO by NH3".CATALYSIS SCIENCE & TECHNOLOGY 4.7(2014):2147-2155. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Interaction between （1360KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment