Abundant Oxygen Vacancies Induced by the Mechanochemical Process Boost the Low-Temperature Catalytic Performance of MnO2 in NH3-SCR
文献类型：期刊论文
| 作者 | Dong, Yuanyuan1,2; Jin, Baofang2; Liu, Shaomian2; Gao, Jiajian3; Wang, Kangjun1,4; Su, Fabing2,4 |
| 刊名 | CATALYSTS
 |
| 出版日期 | 2022-10-01 |
| 卷号 | 12期号:10页码:16 |
| 关键词 | MnO2 ball-milling high surface area oxygen vacancies low-temperature NH3-SCR |
| DOI | 10.3390/catal12101291 |
| 英文摘要 | Manganese oxides (MnOx) have attracted particular attention in the selective catalytic reduction of NOx with NH3 (NH3-SCR) because of their excellent low-temperature activity. Herein, we prepared a highly efficient MnO2 (MnO2-M) catalyst through a facile ball milling-assisted redox strategy. MnO2-M shows a 90% NOx conversion in a wide operating temperature window of 75-200 degrees C under a gas hourly space velocity of 40,000 h(-1), which is much more active than the MnO2 catalyst prepared by the redox method without the ball-milling process. Moreover, MnO2-M exhibits better H2O and SO2 resistance. The enhanced catalytic properties of MnO2-M originated from the high surface area, abundant oxygen vacancies, more acid sites, and higher Mn4+ content induced by the ball-milling process. In situ DRIFTS studies probed the reaction intermediates, and the SCR reaction was deduced to proceed via the typical Eley-Rideal mechanism. This work provides a facile method to enhance the catalytic performance of Mn-based catalysts for low-temperature denitrification and deep insights into the NH3-SCR reaction process. |
| WOS关键词 | ACTIVE INTERFACE ; OXIDE CATALYST ; NO ; REDUCTION ; NH3 ; OXIDATION ; RESISTANCE ; INSIGHT ; SO2 ; SCR |
| 资助项目 | Beijing Chenxi Environmental Engineering Co., Ltd. |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000872350900001 |
| 出版者 | MDPI |
| 资助机构 | Beijing Chenxi Environmental Engineering Co., Ltd. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/55315]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Jin, Baofang; Gao, Jiajian; Wang, Kangjun |
| 作者单位 | 1.Shenyang Univ Chem Technol, Key Lab Resources Chem & Mat, Minist Educ, Shenyang 110142, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.ASTAR, Inst Sustainabil Chem Energy & Environm, 1 Pesek Rd, Singapore 627833, Singapore 4.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Yuanyuan,Jin, Baofang,Liu, Shaomian,et al. Abundant Oxygen Vacancies Induced by the Mechanochemical Process Boost the Low-Temperature Catalytic Performance of MnO2 in NH3-SCR[J]. CATALYSTS,2022,12(10):16. |
| APA | Dong, Yuanyuan,Jin, Baofang,Liu, Shaomian,Gao, Jiajian,Wang, Kangjun,&Su, Fabing.(2022).Abundant Oxygen Vacancies Induced by the Mechanochemical Process Boost the Low-Temperature Catalytic Performance of MnO2 in NH3-SCR.CATALYSTS,12(10),16. |
| MLA | Dong, Yuanyuan,et al."Abundant Oxygen Vacancies Induced by the Mechanochemical Process Boost the Low-Temperature Catalytic Performance of MnO2 in NH3-SCR".CATALYSTS 12.10(2022):16. |
入库方式： OAI收割
来源：过程工程研究所
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