TY - JOUR
T1 - Effect of activation temperature on CO2 capture behaviors of resorcinol-based carbon aerogels
AU - Moon, Cheol Whan
AU - Kim, Youngjoo
AU - Im, Seung Soon
AU - Park, Soo Jin
PY - 2014/1/20
Y1 - 2014/1/20
N2 - In this study, carbon aerogel (CA) was synthesized using a softlate method, and the optimum conditions for the adsorption of carbon dioxide (CO 2) by the carbon aerogel were evaluated by controlling the activation temperature. KOH was used as the activation agent at a KOH/CA activation ratio of 4:1. Three types of activated CAs were synthesized at activation temperatures of 800°C (CA-K-800), 900°C (CA-K-900), and 1000°C (CA-K-1000), and their surface and pore characteristics along with the CO2 adsorption characteristics were examined. The results showed that with the increase in activation temperature from 800 to 900°C, the total pore volume and specific surface area sharply increased from 1.2165 to 1.2500 cm3/g and 1281 to 1526 m2/g, respectively. However, the values for both these parameters decreased at temperatures above 1000°C. The best CO2 adsorption capacity of 10.9 wt % was obtained for the CA-K-900 sample at 298 K and 1 bar. This result highlights the importance of the structural and textural characteristics of the carbon aerogel, prepared at different activation temperatures on CO2 adsorption behaviors.
AB - In this study, carbon aerogel (CA) was synthesized using a softlate method, and the optimum conditions for the adsorption of carbon dioxide (CO 2) by the carbon aerogel were evaluated by controlling the activation temperature. KOH was used as the activation agent at a KOH/CA activation ratio of 4:1. Three types of activated CAs were synthesized at activation temperatures of 800°C (CA-K-800), 900°C (CA-K-900), and 1000°C (CA-K-1000), and their surface and pore characteristics along with the CO2 adsorption characteristics were examined. The results showed that with the increase in activation temperature from 800 to 900°C, the total pore volume and specific surface area sharply increased from 1.2165 to 1.2500 cm3/g and 1281 to 1526 m2/g, respectively. However, the values for both these parameters decreased at temperatures above 1000°C. The best CO2 adsorption capacity of 10.9 wt % was obtained for the CA-K-900 sample at 298 K and 1 bar. This result highlights the importance of the structural and textural characteristics of the carbon aerogel, prepared at different activation temperatures on CO2 adsorption behaviors.
KW - Activation temperature
KW - Carbon aerogel
KW - Carbon dioxide adsorption
KW - Softlate method
UR - http://www.scopus.com/inward/record.url?scp=84892906939&partnerID=8YFLogxK
U2 - 10.5012/bkcs.2014.35.1.57
DO - 10.5012/bkcs.2014.35.1.57
M3 - Article
AN - SCOPUS:84892906939
SN - 0253-2964
VL - 35
SP - 57
EP - 61
JO - Bulletin of the Korean Chemical Society
JF - Bulletin of the Korean Chemical Society
IS - 1
ER -