CO2 adsorption characteristics of slit-pore shaped activated carbon prepared from cokes with high crystallinity

서지정보

· 발행기관 : 한국탄소학회
· 수록지 정보 : Carbon Letters / 16권 / 1호
· 저자명 : Mi-Seon Park, Si-Eun Lee, Min Il Kim and Young-Seak Lee

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

초록

High crystallinity coke-based activated carbon (hc-AC) is prepared using a potassium hydroxidesolution to adsorb carbon dioxide (CO2). The CO2 adsorption characteristics of theprepared hc-AC are investigated at different temperatures. The X-ray diffraction patternsindicate that pitch-based cokes prepared under high temperature and pressure have a highcrystal structure. The textural properties of hc-AC indicate that it consists mainly of slit-likepores. Compared to other textural forms of AC that have higher pore volumes, this slit-poreshapedhc-AC exhibits higher CO2 adsorption due to the similar shape between its pores andCO2 molecules. Additionally, in these high-crystallinity cokes, the main factor affecting CO2adsorption at lower temperature is the pore structure, whereas the presence of oxygen functionalgroups on the surface has a greater impact on CO2 adsorption at higher temperature.

영어초록

High crystallinity coke-based activated carbon (hc-AC) is prepared using a potassium hydroxide
solution to adsorb carbon dioxide (CO2). The CO2 adsorption characteristics of the
prepared hc-AC are investigated at different temperatures. The X-ray diffraction patterns
indicate that pitch-based cokes prepared under high temperature and pressure have a high
crystal structure. The textural properties of hc-AC indicate that it consists mainly of slit-like
pores. Compared to other textural forms of AC that have higher pore volumes, this slit-poreshaped
hc-AC exhibits higher CO2 adsorption due to the similar shape between its pores and
CO2 molecules. Additionally, in these high-crystallinity cokes, the main factor affecting CO2
adsorption at lower temperature is the pore structure, whereas the presence of oxygen functional
groups on the surface has a greater impact on CO2 adsorption at higher temperature.

참고자료

· 없음