| Title: | Improved activity and stability for chlorobenzene oxidation over ternary Cu-Mn-O-Ce solid solution supported on cordierite |
| Author(s): | Gu M; Huang Q; Xu L; Zhu J; Sun Y; Tao T; Yang B; Chen M; Yang H; |
| Address: | "Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Jiangsu Key Laboratory of Atmospheric Environmental Monitoring & Pollution Control, School of Environmental Science & Engineering, Nanjing University of Information Science & Technology, No. 219 Ningliu Road, Nanjing, 210044, China. hqhaixia@163.com. Department of Geography and Environmental Science, University of Reading, Whiteknights, Reading, RG6 6AB, UK" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-022-24988-1 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "A series of CuMnO(x)/CeO(2)/cordierite and CuMnCeO(x)/cordierite catalysts prepared by a complex method with citric acid were investigated for the performance of chlorobenzene (CB) oxidation. The effects of the molar ratio of Mn/Cu, transition metal oxide loading, calcination temperature and time were investigated as the main investigation factor for the performance. Meanwhile, XRD, SEM, BET, H(2)-TPR, O(2)-TPD and XPS were conducted to characterize the physicochemical properties of these catalysts. The results demonstrated that CuMnO(x)/CeO(2)/cordierite catalysts prepared by step-by-step synthesis with the Cu/Mn molar ratio of 5:2 exhibited a high activity (T(90) = 350 degrees C), owing to the incorporation of CuO and MnO(x) for forming CuMn(2)O(4) spinel oxide supported on CeO(2) surface. More importantly, CuMnCeO(x)/cordierite catalysts prepared by one-step exhibited the highest oxidation activity (T(90) < 300 degrees C) attributed to the low H(2) reduction temperature and desorption energy of surface oxygen, and the formed Cu-Mn-O-Ce solid solution and CeO(2) promoted the high dispersion of CuMnO(x) in the supported catalysts. In addition, the possible oxidation mechanism was described to demonstrate the by-products generation and oxygen transfer of CuMnCeO(x) catalysts" |
| Keywords: | Oxidation-Reduction *Oxides/chemistry Catalysis *Chlorobenzenes Oxygen Catalytic oxidation CeO2 Chlorinated volatile organic compound Cordierite; |
| Notes: | "MedlineGu, Mingyang Huang, Qiong Xu, Lirui Zhu, Jie Sun, Yueyin Tao, Tao Yang, Bo Chen, Mindong Yang, Hong eng BK20170954/Natural Science Foundation of Jiangsu Province/ BK20201389/Natural Science Foundation of Jiangsu Province/ BK20190786/Natural Science Foundation of Jiangsu Province/ 21501097/National Natural Science Foundation of China/ 51902166/National Natural Science Foundation of China/ Germany 2022/12/28 Environ Sci Pollut Res Int. 2023 Mar; 30(13):37535-37546. doi: 10.1007/s11356-022-24988-1. Epub 2022 Dec 27" |
