| Title: | "Investigation on removal of multi-component volatile organic compounds in a two-stage plasma catalytic oxidation system - Comparison of X (X=Cu, Fe, Ce and La) doped Mn(2)O(3) catalysts" |
| Author(s): | Liu X; Liu J; Chen J; Zhong F; |
| Address: | "College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China; School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang, 212003, People's Republic of China. College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, People's Republic of China. College of Science, Donghua University, Shanghai, 201620, People's Republic of China. College of Science, Donghua University, Shanghai, 201620, People's Republic of China; Member of Magnetic Confinement Fusion Research Centre, Ministry of Education of the People's Republic of China, People's Republic of China. Electronic address: fczhong@dhu.edu.cn" |
| DOI: | 10.1016/j.chemosphere.2023.138557 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Linking) |
| Abstract: | "Mn(2)O(3)-X catalysts (X = Cu, Fe, Ce and La) were prepared based on gamma-Al(2)O(3) for the mixture degradation of muti-component volatile organic compounds (VOCs) composed of toluene, acetone, and ethyl acetate. The catalysts were characterized, and the density functional theory (DFT) simulation of ozone adsorption on Mn(2)O(3)-X were carried out to investigate the influence of adsorption energy on catalytic performance. The results showed that the removal efficiency (RE) of each VOC component was similarly improved by Mn(2)O(3)-X catalysts, and the greatest increase in VOCs' removal efficiency was obtained (7.8% for toluene, 86.2% for acetone, and 82.5% for ethyl acetate) at a special input energy (SIE) of 700 J L(-1) with Mn(2)O(3)-La catalyst. Characterization results demonstrated that Mn(2)O(3)-La catalyst had the highest content of low valence Mn elements and the greatest O(ads)/O(latt) ratio, as well as the lowest reduction temperature. Mn(2)O(3)-La catalyst also presented superior catalytic effect in improving carbon balance (CB) and CO(2) selectivity ( [Formula: see text] ). The CB and [Formula: see text] were increased by 47.7% and 12.61% respectively with Mn(2)O(3)-La at a SIE of 400 J L(-1) compared with that when only gamma-Al(2)O(3) was applied. The DFT simulation results of ozone adsorption on Mn(2)O(3)-X catalysts indicated that the adsorption energy of catalyst crystal was related to the catalytic performance of the catalyst. The Mn(2)O(3)-La/gamma-Al(2)O(3) catalyst, which had the highest absolute value of adsorption energy, presented the best performance in improving VOCs' RE" |
| Keywords: | *Volatile Organic Compounds/chemistry Acetone Toluene/chemistry *Ozone Composite metal catalysts Multi-component volatile organic compounds Plasma; |
| Notes: | "MedlineLiu, Xin Liu, Jianqi Chen, Jiayao Zhong, Fangchuan eng England 2023/04/11 Chemosphere. 2023 Jul; 329:138557. doi: 10.1016/j.chemosphere.2023.138557. Epub 2023 Apr 8" |
