机构地区:[1]School of Environmental Science and Engineering,Nanjing Tech University,Nanjing,210009,China [2]State Key Laboratory for Clean and Efficient Coal-fired Power Generation and Pollution Control,State Key Laboratory of Low-carbon Smart Coal-fred Power Generation and Ultra-clean Emission,Nanjing,210046,China [3]College of Materials Science and Engineering,Nanjing Tech University,Nanjing,210009,China [4]State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing,210009,China [5]Nanjing Gekof Institute of Environmental Protection Technology&Equipment Co.,Nanjing,210031,China
出 处:《Journal of Rare Earths》2025年第3期526-533,I0004,共9页稀土学报(英文版)
基 金:Project supported by the National Key Research and Development Program of China(2021YFB3500600,2021YFB3500605);Natural Science Foundation of Jiangsu Province(BK20220365);Key R&D Program of Jiangsu Province(BE2022142);Natural Science Foundation of the Jiangsu Higher Education Institutions of China(22KJB610002);Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD);the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX23_1419);Science and Technology Plan of Yangzhou(YZ2022030,YZ2023020);the State Key Laboratory of Clean and Efficient Coal-fired Power Generation and Pollution Control(D2022FK098)。
摘 要:The integration of surface filtration and catalytic decomposition functions in catalytic bags enables the synergistic removal of multiple pollutants(such as dust,nitrogen oxide,acid gases,and dioxins)in a single reactor,thus effectively reducing the cost and operational difficulties associated with flue gas treatment.In this study,Mn-Ce-Sm-Sn(MCSS)catalysts were prepared and loaded onto hightemperature resistant polyimide(P84)filter through ultrasonic impregnation to create composite catalytic filter.The results demonstrate that the NO conversion rates of the composite catalytic filter consistently achieve above 95%within the temperature range of 160-260℃,with a chlorobenzene T_(90)value of 230℃.The ultrasonic impregnation method effectively loaded the catalyst onto the filter,ensuring high dispersion both on the surface and inside the filter.This increased exposure of catalyst active sites enhances the catalytic activity of the composite catalytic filter.Additionally,increasing the catalyst loading leads to a gradual decrease in permeability,an increase in pressure drops and the long residence time of the flue gas,thereby improving catalytic activity.Compared to ordinary impregnation methods,ultrasonic impregnation improves the bonding strength between the catalyst and filter,as well as the permeability of the composite catalytic filter under the same loading conditions.Overall,this study presents a novel approach to prepare composite catalytic filter for the simultaneous removal of NO and chlorobenzene at low temperatures.
关 键 词:Compound catalytic filter Simultaneous catalysis Polyimide fibers Ultrasonic impregnation Rare earths
分 类 号:X511[环境科学与工程—环境工程] O643.36[理学—物理化学]
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