Effects of K₂CO₃ modification on development of microporous commercial activated carbon WG12 for CO₂ adsorption

International Conference and Exhibition on Materials Chemistry

March 31-April 01, 2016 Valencia, Spain

Joanna Srenscek-Nazzal, Umut Mutlu, Urszula Narkiewicz, Antoni W Morawski, Rafal Wrobel and Beata Michalkiewicz

West Pomeranian University of Technology, Poland
Kocaeli University, Turkey

Posters & Accepted Abstracts: J Material Sci Eng

Abstract :

Rapidly increasing concentration of CO₂ in the atmosphere has drawn more and more attention in recent years. The adsorption has been considered as an effective technology for capture. Activated carbons (ACs) are an outstanding adsorbent and commonly used for adsorption of CO2. The main purpose of this work was to prepare various ACs from the same precursor at various activation temperatures, investigate both porosity development (surface area, pore volume, micropore volume) and CO2 adsorption. A commercial AC WG12 (Gryfskand Sp. z o. o. Poland) was chemically activated with K₂CO₃ at temperatures ranging from 600 to 850 oC, with a constant mass ratio WG12:K₂CO₃=1. The micropore volume (and specific surface area) of the resulting ACs varied from 0.42 cm3/g (1128 m2/g) to 0.48 cm3/g (1247 m2/g) depending on the temperature used in the activation process. The AC obtained at temperature of 850oC exhibited the highest specific surface area and micropore volume. The CO2 adsorption increased with increasing the temperature. The highest adsorption of CO₂ (2.6 mmol g-1) was obtained on the AC prepared at the temperature of 850oC.

Biography :

Email: jsrenscek@zut.edu.pl