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Rational design of fly ash-derived iron-based catalysts for sf6 degradation: structure-activity relationships, kinetics, fluorine migration, and engineering evaluation
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DOI：10.1016/j.ces.2026.124451.png)
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Abstract
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• Three fly ash catalysts were developed for cost-effective SF6 degradation. • Porous carriers or skeletons provide hierarchical pores and high surface area. • H2 reduction creates abundant oxygen vacancies, driving fast kinetics even at 300 °C. • Vacancies activate SF6, Fe electrons cleave S-F, and Ca mineralizes F into CaF2. • FA-Fe@CAN-S significantly reduces both the preparation cost and carbon footprint.
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