Catalytic N2O Decomposition over Cu/Mn/Zn Doped Ceo2 Composite Oxides

2019 3rd International Conference on Environmental and Energy Engineering

生态环境科学

Zhang, Yuanyang^1 ; Guo, Yaqiong^1 ; Li, Na^1 ; Feng, Yaoyu^1

School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai

200237, China^1

关键词: Active components;    Catalytic N2O decomposition;    Composite oxide;    Doped CeO2;    N2O decomposition;    Simulated mixtures;    Stability tests;    Synergistic action;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/281/1/012001/pdf
DOI  :  10.1088/1755-1315/281/1/012001

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Cu/Mn/Zn oxides were firstly prepared by coprecipitation with molar ratio of Cu/Zn, 0.17, and Mn/(Cu+Zn) by 0.0∼0.06, respectively. The temperature of N2O conversion ca. 10% over Cu/Zn and Cu/Mn0.03/Zn was 370°C and 325°C, respectively, by using 6.8(v)% N2O+balanced N2, and GHSV of 30000h-1, indicating the addition of manganese oxide could improve Cu/Zn oxide activity on N2O decomposition. The Cu/Mn/Zn doped CeO2 composite oxides were further prepared with molar ratio of Ce/Cu by 0.0∼1.4. The temperature of N2O conversion ca. 10% over Ce1.0/Cu/Mn0.03/Zn was 260°C as same conditions applied over Cu/Zn and Cu/Mn0.03/Zn samples. Stability test by using simulated mixture, 6.8(v)% N2O+5.0(v)% O2+3.0(v)% H2O+balanced N2, 580°C, GHSV of 30000h-1, showed that N2O conversion remained stable. Characterization demonstrated that the synergistic action of active components was the main origin of Ce1.0/Cu/Mn0.03/Zn sample had good performance on N2O abatement.