首页|Advances in selective catalytic oxidation of ammonia(NH3-SCO):A review of catalyst structure-activity relationship and design principles

Advances in selective catalytic oxidation of ammonia(NH3-SCO):A review of catalyst structure-activity relationship and design principles

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NH3 in ambient air directly leads to an increase in the aerosol content in the air.These substances lead to the formation of haze to various environmental problems after atmospheric circulation and diffusion.Controlling NH3 emissions caused by ammonia escaping from mobile and industrial sources can effec-tively reduce the NH3 content in ambient air.Among the various NH3 removal methods,the selective catalytic oxygen method(NH3-SCO)is committed to oxidizing NH3 to environmentally harmless H2O and N2;therefore,it is the most valuable and ideal ammonia removal method.In this review,the charac-teristics of loaded and core-shell catalysts in NH3-SCO have been reviewed in the context of catalyst structure-activity relationships,and the H2O resistance and SO2 resistance of the catalysts are discussed in the context of practical application conditions.Then the effects of the valence state of the active cen-ter,oxygen species on the catalyst surface,dispersion of the active center and acidic sites on the catalyst performance are discussed comprehensively.Finally,the shortcomings of the existing catalysts are sum-marized and the catalyst development is discussed based on the existing studies.

AmmoniaSelective catalytic oxidationActive metals and supportsInfluence of gas compositionReaction mechanismCatalyst structure-activity relationship

Zhao Li、Chunxue Wang、Junjun Qiu、Yixing Ma、Chi Wang、Xin Sun、Kai Li、Ping Ning、Fei Wang

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Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China

National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries,Kunming 650500,China

Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China

国家自然科学基金Yunnan Fundamental Research ProjectsNational Engineering Laboratory for Mobile Source Emission Control Technology

52000093202101BE070001-001NELMS2019B03

2024

10.1016/j.cclet.2023.108432

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(1)
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