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Yan Zhang Meng Wang Shunyu Kang Tingting Pan Hua Deng Wenpo Shan Hong He 《环境科学学报(英文版)》2021,33(6):17-26
The control of ethyl acetate emissions from fermentation and extraction processes in the pharmaceutical industry is of great importance to the environment. We have developed three Mn2O3 catalysts by using different Mn precursors (MnCl2, Mn(CH3COO)2, MnSO4), named as Mn2O3-Cl, -Ac, -SO4. The tested catalytic activity results showed a sequence with Mn precursors as: Mn2O3-Cl > Mn2O3-Ac > Mn2O3-SO4. The Mn2O3-Cl catalyst reached a complete ethyl acetate conversion at 212℃ (75℃ lower than that of Mn2O3-SO4), and this high activity 100% could be maintained high at 212℃ for at least 100 hr. The characterization data about the physical properties of catalysts did not show an obvious correlation between the structure and morphology of Mn2O3 catalysts and catalytic performance, neither was the surface area the determining factor for catalytic activity in the ethyl acetate oxidation. Here we firstly found there is a close linear relationship between the catalytic activity and the amount of lattice oxygen species in the ethyl acetate oxidation, indicating that lattice oxygen species were essential for excellent catalytic activity. Through H2 temperature-programmed reduction (H2-TPR) results, we found that the lowest initial reduction temperature over the Mn2O3-Cl had stronger oxygen mobility, thus more oxygen species participated in the oxidation reaction, resulting in the highest catalytic performance. With convenient preparation, high efficiency, and stability, Mn2O3 prepared with MnCl2 will be a promising catalyst for removing ethyl acetate in practical application. 相似文献
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生物活性炭作用机理及其在废水处理中的应用 总被引:6,自引:0,他引:6
沈顺雨 《城市环境与城市生态》1992,5(4):18-20
生物活性炭技术是在生物膜技术和活性炭吸附技术基础上发展起来的一种新而有效的废水处理技术.本文分析了生物活性炭去污机理,并结合小试试验、工程实例探讨了这一新技术的应用范围. 相似文献
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Zhan Liangtong Wang Ziang Wang Shunyu Li Zhuofeng Chen Yunmin 《Journal of Material Cycles and Waste Management》2023,25(3):1482-1497
Journal of Material Cycles and Waste Management - Autoclaved aerated concrete powder (AACP) is a kind of solid waste, which is characterized by strong water absorption ability and low compressive... 相似文献
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