What question did this study set out to answer?

The aim is to assess the CO2 capture capabilities of NaX and NaY zeolites synthesized from blast furnace slag under specific conditions.

Evaluating the Cyclic CO 2 Capture Performance of NaX and NaY Zeolites Synthesized from Blast Furnace Slag under Sulfur-Containing Flue Gas

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This work evaluates zeolite adsorbents' CO2 capture performance in sulfur-containing flue gas, indicating their practical applications.

The aim is to assess the CO2 capture capabilities of NaX and NaY zeolites synthesized from blast furnace slag under specific conditions.
Synthesis of FAU-type zeolites from blast furnace slag via acid leaching and hydrothermal conversion.
Static adsorption measurements to evaluate CO2 adsorption capacity and selectivity.
Twin-column vacuum pressure swing adsorption test to determine CO2 purity and recovery rates at 313 K and 0.2 MPa.
Sulfur adsorption cycling experiments and density functional theory calculations to analyze sulfur resistance.
BFS-X exhibits a CO2 adsorption capacity of 82.04 cm3/g and stronger binding sites than BFS-Y.
BFS-Y has a CO2/CO selectivity of 32.61 compared to BFS-X's 18.29, signifying superior selectivity.
In VPSA testing, BFS-Y achieved CO2 product purity of 64.35% and sulfur tolerance.
BFS-X demonstrated a CO2 recovery rate of 77.70%, with similar productivity to BFS-Y.

Liu et al. (2026) studied this question.

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