首页|Alkali-resistant NOx reduction over FeVO4/TiO2 catalysts via regulating the electron transfer between Fe and V

Alkali-resistant NOx reduction over FeVO4/TiO2 catalysts via regulating the electron transfer between Fe and V

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The presence of alkali metals in exhaust gas from stationary resources causes a grand challenge for the practical application of selective catalytic reduction(SCR)of NOx with NH3.Here,alkali-resistant NOx reduction has been successfully implemented via tailoring the electron transfer over Fe and V species on FeVO4/TiO2 catalysts.The strong interaction between Fe and V induced electron transfer from V to Fe and strengthened the adsorption and activation of NH3 and NO over active VOx sites.In the presence of K2O,the strong electron withdrawing effect of Fe offset the electron donating effect of K on the VOx species,thus protecting the active species VOx to maintain the NOx reduction ability.The enhanced adsorption and activation of NH3 allowed SCR reaction to proceed via E-R mechanism even after K2O poisoning.This work elucidated the electronic effects on the alkali metals resistance of traditional ferric vanadate SCR catalysts and provided a promising strategy to design SCR catalysts with superior alkali resistance.

Air pollution controlNOx reductionSelective catalytic reductionAlkali metalsElectron transfer

Yunang Dong、Penglu Wang、Xiangyu Liu、Jiang Deng、Aling Chen、Lupeng Han、Dengsong Zhang

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International Joint Laboratory of Catalytic Chemistry,State Key Laboratory of Advanced Special Steel,College of Sciences,Shanghai University,Shanghai 200444,China

国家自然科学基金Shanghai Rising-Star ProgramShanghai Education Development Foundation and Shanghai Municipal Education Commission

2212560422QA140370022Z00354

2024

10.1016/j.cclet.2023.108635

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(2)
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