Interaction between support and V2O5 in the selective catalytic reduction of NO by NH3
文献类型：期刊论文
| 作者 | Guo, Feng1,2; Yu, Jian1; Chu, Mo2; Xu, Guangwen1 |
| 刊名 | CATALYSIS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:7页码:2147-2155 |
| 关键词 | OXIDE CATALYSTS NITRIC-OXIDE MIXED OXIDES AMMONIA SCR ZIRCONIA REMOVAL VANADIA SPECTROSCOPY TEMPERATURES |
| ISSN号 | 2044-4753 |
| 其他题名 | Catal. Sci. Technol. |
| 中文摘要 | 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. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | OXIDE CATALYSTS ; NITRIC-OXIDE ; MIXED OXIDES ; AMMONIA ; SCR ; ZIRCONIA ; REMOVAL ; VANADIA ; SPECTROSCOPY ; TEMPERATURES |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000337132100034 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/10907]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：过程工程研究所
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