Polish Journal of Chemical Technology

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Institute of Chemical and Environment Engineering West Pomeranian University of Technology, Szczecin

Adres redakcji: 70-322, Szczecin, Pułaskiego 10, Poland, +48914494872

Adres e-mail: rk@zut.edu.pl

Adres e-mail: bzielinska@zut.edu.pl

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Sepiolite-based adsorbents for carbon dioxide capture
(West Pomeranian University of Technology. Publishing House, 2021-04-01) Szymańska, Alicja; Kiełbasa, Karolina; Zachodniopomorski Uniwersytet Technologiczny w Szczecinie
Sepiolite and the sepiolite-based materials were studied in terms of carbon dioxide adsorption. The pore structure and the surface characterization of the obtained materials were specified based on adsorption-desorption isotherms of nitrogen measured at –196°C and carbon dioxide at 0°C. The specifi c surface area (SSA) was calculated accord-ing to the BET equation. The pore volume was estimated using the DFT method. Pristine sepiolite has shown the following value of SSA and CO2 uptake at 0°C – 105 m2/g and 0.27 mmol/g, respectively. The highest value of these parameters was found for material obtained by KOH activation of mixture sepiolite and molasses (MSEP2) – 676 m2/g and 1.49 mmol/g. Sample MSEP2 also indicated the highest value of total pore volume and micropores volume with a diameter up to 0.8 nm.