Continuous generation of lattice oxygen via redox engineering for boosting toluene degradation performances
文献类型：期刊论文
| 作者 | He, Shiya2; You, Zhimin2; Jin, Xin1; Wu, Yi2; Chen, Cheng2; Zhao, He3; Shen, Jian2 |
| 刊名 | Chinese Journal of Chemical Engineering
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 34页码:258-266 |
| ISSN号 | 10049541 |
| 关键词 | Interface states - Oxygen - Redox reactions - Efficiency - Catalyst activity - Cobalt compounds |
| DOI | 10.1016/j.cjche.2020.07.050 |
| 英文摘要 | Excellent performances promoted by lattice oxygen have attracted wide attention for catalytic degradation of volatile organic compounds (VOCs). However, how to control the continuous regeneration of lattice oxygen from the support is seldom reported. In this study, we selected sepiolite supported manganese-cobalt oxides (CoxMn100-xOy) as model catalysts by tuning Co/(Co + Mn) mass ratio (x = 3%, 10%, 15%, and 20%) to enhance toluene degradation efficiency, owing to lattice oxygen regeneration by redox cycle existing at the interface and Mn species with high valence state, initiated by cobalt catalytic performance under the role of crystal field stability phase. The results of activity test show that the sepiolite-Co15Mn85Oy catalyst exhibit outperformances at 193 掳C with 10,000 h鈭? GHSV. In addition, the catalyst existed at the bottom of the 'volcano' curve correlated T50 or T90 with Co/(Co + Mn) weight ratio is sepiolite-Co15Mn85Oy, conforming its outperformance. Further characterized by investigating active sites structural and electronic properties, the essential of superior catalytic activity is attributed to the grands of lattice oxygen continuous formation resulted from redox engineering based on the high atomic ratio of surface lattice oxygen with continuous refilled from the support and that of Mn4+/Mn3+ cycle initiated by cobalt catalytic behaviors. All in all, redox engineering, not only promotes grands of active species reversible regeneration, but supplies an alternative catalyst design strategy towards the terrific efficiency-to-cost ratio performance. 漏 2020 Elsevier B.V. |
| 学科主题 | Degradation |
| 项目编号 | This work is Supported by the National Natural Science Foundation of China ( 21707023 ), Provincial Key Research and Development Plan of Hunan Province ( 2018SK2034 ), and New Faculty Start-Up Funding from Xiangtan University ( 18QDZ16 ). |
| 出版者 | Materials China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60341]  |
| 作者单位 | 1.State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Qingdao; 266580, China 2.Department of Environment and Resources, Xiangtan University, Xiangtan; 411105, China 3.Beijing Engineering Research Center of Process Pollution Control, Division of Environment Technology and Engineering, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | He, Shiya,You, Zhimin,Jin, Xin,et al. Continuous generation of lattice oxygen via redox engineering for boosting toluene degradation performances[J]. Chinese Journal of Chemical Engineering,2021,34:258-266. |
| APA | He, Shiya.,You, Zhimin.,Jin, Xin.,Wu, Yi.,Chen, Cheng.,...&Shen, Jian.(2021).Continuous generation of lattice oxygen via redox engineering for boosting toluene degradation performances.Chinese Journal of Chemical Engineering,34,258-266. |
| MLA | He, Shiya,et al."Continuous generation of lattice oxygen via redox engineering for boosting toluene degradation performances".Chinese Journal of Chemical Engineering 34(2021):258-266. |
入库方式： OAI收割
来源：过程工程研究所
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