Revealing the Ca resistance enhancement mechanism for the NH3-SCR reaction over VTi catalyst by CuO modification
文献类型：期刊论文
| 作者 | Zheng, Yang2,3; Guo, Yangyang2; Shan, Wenpo1; Lian, Zhihua1; Zhu, Tingyu1,2 |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2022-05-05 |
| 卷号 | 637页码:9 |
| 关键词 | Selective catalytic reduction (SCR) Alkali poisoning Anti Ca ability CuO modification V/Ti catalyst |
| ISSN号 | 0926-860X |
| DOI | 10.1016/j.apcata.2022.118606 |
| 英文摘要 | Currently, NOx emission control by the selective catalytic reduction of NOx with NH3 (NH3 SCR) technology for the cement industry has become urgent in China. The poisoning effect of Ca species from cement flue gas on V2O5/TiO2(V/Ti) catalysts still faces severe challenges. For the first time, CuO was investigated for the possibility of Ca resistance enhancement on V/Ti catalysts. The activity tests show that the Ca CuV/Ti catalyst maintains a good performance with an NO conversion above 80% between 260 330 degrees C, while the highest NO conversion of Ca V/Ti in the test temperature range is only 52.4%. According to the characterization results, CaO is easier to adsorb on CuO than V2O5, thus retaining the V active sites. Due to the cycles of 2Cu(2+) + V3+<-> 2Cu(+) + V5+, CuO modification can significantly improve the redox ability of the V/Ti catalyst. In situ DRIFTS results show that the effect of CaO poisoning on the adsorption rate and reactivity of NHx over Ca CuV/Ti is less than that of Ca V/ Ti. CaO even promotes the formation of the active nitrate species over CuV/Ti, which is the main reason for its strong Ca resistance. This study provides theoretical support for the industrial application of anti Ca poisoning SCR catalysts. |
| WOS关键词 | V2O5-WO3/TIO2 CATALYST ; SCR CATALYSTS ; REDUCTION ; DEACTIVATION ; ADDITIVES ; CALCIUM ; ALKALI ; NO |
| 资助项目 | National Science Foundation of China[52170119] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021044] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[51938014] |
| WOS研究方向 | Chemistry ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000793468400001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53366]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Guo, Yangyang; Zhu, Tingyu |
| 作者单位 | 1.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 2.Chinese Acad Sci, Innovat Acad Green Manufacture, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Yang,Guo, Yangyang,Shan, Wenpo,et al. Revealing the Ca resistance enhancement mechanism for the NH3-SCR reaction over VTi catalyst by CuO modification[J]. APPLIED CATALYSIS A-GENERAL,2022,637:9. |
| APA | Zheng, Yang,Guo, Yangyang,Shan, Wenpo,Lian, Zhihua,&Zhu, Tingyu.(2022).Revealing the Ca resistance enhancement mechanism for the NH3-SCR reaction over VTi catalyst by CuO modification.APPLIED CATALYSIS A-GENERAL,637,9. |
| MLA | Zheng, Yang,et al."Revealing the Ca resistance enhancement mechanism for the NH3-SCR reaction over VTi catalyst by CuO modification".APPLIED CATALYSIS A-GENERAL 637(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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