TY - JOUR
T1 - Effects of Pore Structure on n-Butane Adsorption Characteristics of Polymer-Based Activated Carbon
AU - Lee, Hye Min
AU - Baek, Jin
AU - An, Kay Hyeok
AU - Park, Soo Jin
AU - Park, Young Kwon
AU - Kim, Byung Joo
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2019/1/16
Y1 - 2019/1/16
N2 - In this study, the correlation between n-butane adsorption characteristics and pore characteristics of activated carbons (ACs) was investigated by activated polymer-based hard carbons (APHCs) using a carbon dioxide activation method. The structural characteristics of the ACs were observed by X-ray diffraction and Raman spectroscopy. The N 2 adsorption isotherm characteristics at 77 K were confirmed by Brunauer-Emmett-Teller, Barrett-Joyner-Halenda, and nonlocal density functional theory equations. From the results, specific surface areas and total pore volume of the ACs were determined to be 1020-2440 m 2 /g and 0.42-1.30 cm 3 /g, respectively. As the activation time increased, the fraction of micropores decreased from 85% to about 40%. On the other hand, the porosity of the mesopores increased to about 60% from a ratio of about 10%. The specific power adsorption has been increased with the development of the mesopores and exhibited 20 960 sK/g at APHC-10-5 (540% higher compared to that of APHC-10-2). It was confirmed that the correlation between the adsorption capacity of n-butane and the pore characteristics of the ACs was determined by pore diameter of 1.5-4.5 nm.
AB - In this study, the correlation between n-butane adsorption characteristics and pore characteristics of activated carbons (ACs) was investigated by activated polymer-based hard carbons (APHCs) using a carbon dioxide activation method. The structural characteristics of the ACs were observed by X-ray diffraction and Raman spectroscopy. The N 2 adsorption isotherm characteristics at 77 K were confirmed by Brunauer-Emmett-Teller, Barrett-Joyner-Halenda, and nonlocal density functional theory equations. From the results, specific surface areas and total pore volume of the ACs were determined to be 1020-2440 m 2 /g and 0.42-1.30 cm 3 /g, respectively. As the activation time increased, the fraction of micropores decreased from 85% to about 40%. On the other hand, the porosity of the mesopores increased to about 60% from a ratio of about 10%. The specific power adsorption has been increased with the development of the mesopores and exhibited 20 960 sK/g at APHC-10-5 (540% higher compared to that of APHC-10-2). It was confirmed that the correlation between the adsorption capacity of n-butane and the pore characteristics of the ACs was determined by pore diameter of 1.5-4.5 nm.
UR - https://www.scopus.com/pages/publications/85055138656
U2 - 10.1021/acs.iecr.8b02715
DO - 10.1021/acs.iecr.8b02715
M3 - Article
AN - SCOPUS:85055138656
SN - 0888-5885
VL - 58
SP - 736
EP - 741
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 2
ER -