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Research on NH3-SCR Denitration Activity and SO2/H2O Tolerance of NH3SO3-Modified Rare Earth Tailings Catalyst AITranslate

JIAO Kun-ling; JIAO Xiao-yun; LIU Jia-jie; WANG Si-ying; LI Na; WU Wen-fei
School of Energy and Environment,Inner Mongolia University of Science and Technology;School of Energy and Environment,Inner Mongolia University of Science and Technology;School of Energy and Environment,Inner Mongolia University of Science and Technology;School of Energy and Environment,Inner Mongolia University of Science and Technology;School of Energy and Environment,Inner Mongolia University of Science and Technology;School of Energy and Environment,Inner Mongolia University of Science and Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

Different mass fractions of NH3SO3-modified rare earth tailings NH3-SCR denitration catalysts were prepared using ball milling and microwave roasting methods.The denitration activity and SO2/H2O tolerance of the catalysts were analyzed by BET,SEM-EDS,XRD,NH3-TPD and H2-TPR.The results show that NH3SO3 modification significantly improves the denitration activity of the catalysts,and the denitration activity of the 10%NH3SO3-modified catalyst could reach about 90%at 300~350℃.The combined action of SO2/H2O can further improve the denitration activity of the 10%NH3SO3-modified catalyst to 97%,and its promoting effect remains stable and reversible.After the rare earth tailings are modified by NH3SO3,the specific surface area,acidic sites,and strength of the catalysts increace.The dispersion of surface active substances of the tailings is improved,and the crystalline structure is weakened.The adsorption capacity and redox ability of the catalysts are improved,thereby enhancing catalytic denitration activity and maintaining excellent SO2/H2O tolerance.

KeyWords AITranslate

NH3SO3modification rare earth tailings catalyst NH3-SCR denitration SO2/H2O tolerance denitration activity

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Basic Information:

DOI：

Chinese Library Classification Number:TQ426[化学工程]

Citation Information:

Different mass fractions of NH3SO3-modified rare earth tailings NH3-SCR denitration catalysts were prepared using ball milling and microwave roasting methods.The denitration activity and SO2/H2O tolerance of the catalysts were analyzed by BET,SEM-EDS,XRD,NH3-TPD and H2-TPR.The results show that NH3SO3 modification significantly improves the denitration activity of the catalysts,and the denitration activity of the 10%NH3SO3-modified catalyst could reach about 90%at 300~350℃.The combined action of SO2/H2O can further improve the denitration activity of the 10%NH3SO3-modified catalyst to 97%,and its promoting effect remains stable and reversible.After the rare earth tailings are modified by NH3SO3,the specific surface area,acidic sites,and strength of the catalysts increace.The dispersion of surface active substances of the tailings is improved,and the crystalline structure is weakened.The adsorption capacity and redox ability of the catalysts are improved,thereby enhancing catalytic denitration activity and maintaining excellent SO2/H2O tolerance.

quote

GB/T 7714-2015 [1] JIAO Kun-ling, JIAO Xiao-yun, LIU Jia-jie, et al. Research on NH3-SCR Denitration Activity and SO2/H2O Tolerance of NH3SO3-Modified Rare Earth Tailings Catalyst[J]. Rare Metals and Cemented Carbides, 2024(2): 32-37.
MLA [1] JIAO Kun-ling, et al., "Research on NH3-SCR Denitration Activity and SO2/H2O Tolerance of NH3SO3-Modified Rare Earth Tailings Catalyst." Rare Metals and Cemented Carbides, no. 2, 2024, pp. 32-37.
APA [1] JIAO Kun-ling, JIAO Xiao-yun, LIU Jia-jie, WANG Si-ying, LI Na, & WU Wen-fei. (2024). Research on NH3-SCR Denitration Activity and SO2/H2O Tolerance of NH3SO3-Modified Rare Earth Tailings Catalyst. Rare Metals and Cemented Carbides(2), 32-37.
IEEE [1] JIAO Kun-ling, JIAO Xiao-yun, LIU Jia-jie, WANG Si-ying, LI Na, and WU Wen-fei, "Research on NH3-SCR Denitration Activity and SO2/H2O Tolerance of NH3SO3-Modified Rare Earth Tailings Catalyst," Rare Metals and Cemented Carbides, no. 2, pp. 32-37, 2024. keywords: {NHSOmodification;rare earth tailings;catalyst;NH-SCR denitration;SO/HO tolerance;denitration activity}