Regulating asymmetric oxygen vacancies in copper-ceria catalysts for achievement of excellent toluene catalytic oxidation
文献类型：期刊论文
| 作者 | Mao, Lutao3,4,5; Song, Zhongxian5; Fan, Jie4; Cui, Yang4; Zhang, Ke4; He, Qiusheng1; Zhang, Runqi1; Wang, Xinming2 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2024-04-14 |
| 卷号 | 334页码:12 |
| 关键词 | Volatile organic compounds Asymmetric oxygen vacancies Toluene catalytic oxidation Metal oxide catalyst Rate-determining step |
| ISSN号 | 1383-5866 |
| DOI | 10.1016/j.seppur.2023.126035 |
| 英文摘要 | Regulation of oxygen vacancy upon metal oxide catalysts is an effective strategy for improving the catalytic activity in the oxidation of volatile organic compounds. Herein, copper (Cu) ions were introduced into ceria (CeO2) catalysts via the modulation of preparation methods (ball-milling, co-precipitation and sol-gel method) to generate asymmetric oxygen vacancies (AOVs) with varying concentrations at the Cu-CeO2 interface, thereby enhancing the catalytic performance towards toluene. The presence of abundant AOVs promotes the rapid conversion of the redox couples of Ce4+/Ce3+ and Cu+/Cu2+ according to Cu+-OV-Ce3+ <-> Cu2+-O2- (ad)-Ce4+, enhancing the redox property and lattice oxygen mobility of the catalyst synthesized by ball-milling strategy (BM-CuCe). Moreover, the AOVs expedite the backfilling and activation of gaseous oxygen, leading to a transformation of rate-determining steps into the cracking of aromatic rings, significantly improving the catalytic activity towards toluene. The BM-CuCe catalyst, with the highest AOVs concentration, exhibits the excellent catalytic activity, water-resistance capability as well as stability. This work sheds light on the promoting effect of AOVs in the catalytic oxidation of toluene and contributes an attractive strategy for designing highly efficient metal oxide catalysts. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001138204000001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76063]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Fan, Jie; He, Qiusheng |
| 作者单位 | 1.Shanxi Polytech Coll, Dept Mat & Environm Engn, Taiyuan 030006, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 3.Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030024, Peoples R China 4.Taiyuan Univ Sci & Technol, Sch Environm & Resources, Taiyuan 030024, Peoples R China 5.Henan Univ Urban Construct, Fac Environm & Municipal Engn, Pingdingshan 467036, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao, Lutao,Song, Zhongxian,Fan, Jie,et al. Regulating asymmetric oxygen vacancies in copper-ceria catalysts for achievement of excellent toluene catalytic oxidation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,334:12. |
| APA | Mao, Lutao.,Song, Zhongxian.,Fan, Jie.,Cui, Yang.,Zhang, Ke.,...&Wang, Xinming.(2024).Regulating asymmetric oxygen vacancies in copper-ceria catalysts for achievement of excellent toluene catalytic oxidation.SEPARATION AND PURIFICATION TECHNOLOGY,334,12. |
| MLA | Mao, Lutao,et al."Regulating asymmetric oxygen vacancies in copper-ceria catalysts for achievement of excellent toluene catalytic oxidation".SEPARATION AND PURIFICATION TECHNOLOGY 334(2024):12. |
入库方式： OAI收割
来源：广州地球化学研究所
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