Study on the preparation and catalytic oxidation of chlorobenzene over La-M-Co-O/cordierite catalysts
SI Han1,2,3, HUANG Qiong1,2,3, TAO Tao1,3,4, YANG Bo1,2,3, ZHAO Yun-xia1,2,3, CHEN Min-dong1,2,3
1. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technologies, Nanjing University of Information Science&Technology, Nanjing 210044, China; 2. School of Environmental Science&Engineering, Nanjing University of Information Science&Technology, Nanjing 210044, China; 3. Jiangsu Key Laboratory of Atmospheric Environmental Monitoring&Pollution Control, Nanjing University of Information Science&Technology, Nanjing 210044, China; 4. School of Chemistry and Materials Science, Nanjing University of Information Science&Technology, Nanjing 210044, China
Abstract：La-M-Co-O (M=Mn, Cr, Fe, Ni and Cu)/cordierite catalysts were prepared by complexation method with citric acid. BET, XRD, SEM, H2-TPR and XPS technologies were used to characterize and analyze the performance and microstructure of these catalysts. Meanwhile, the influences of the types of transition metal, the amount transition metal and calcination temperature were studied. The results show that when the calcination temperature was 650℃, the active oxide particles supported on the surface of the catalysts were the most dispersed and displayed the best activity for chlorobenzene oxidation. And when the reaction temperature was 350℃, the conversion rate is as high as 96.4%. The main reason was that the catalysts displayed the structure of LaCoO3 perovskite composite oxides attribute to the high calcination temperature, which was beneficial for improving the performance of catalytic oxidation of chlorobenzene over composite catalysts.
司涵, 黄琼, 陶涛, 杨波, 赵云霞, 陈敏东. La-M-Co-O/堇青石催化剂的制备及催化氧化氯苯[J]. 中国环境科学, 2020, 40(10): 4314-4322.
SI Han, HUANG Qiong, TAO Tao, YANG Bo, ZHAO Yun-xia, CHEN Min-dong. Study on the preparation and catalytic oxidation of chlorobenzene over La-M-Co-O/cordierite catalysts. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4314-4322.
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