유원철
2019-02-22T01:28:56Z
2019-02-22T01:28:56Z
2018-12
MICROPOROUS AND MESOPOROUS MATERIALS, v. 272, Page. 92-100
1387-1811
https://www.sciencedirect.com/science/article/pii/S1387181118303317
https://repository.hanyang.ac.kr/handle/20.500.11754/99154
Highly N-doped crab shell-derived carbon nanofibers (CSCNs) with enhanced sorption capacity for CO2 and CH4 are presented. Two different carbonization temperatures, 600 degrees C and 900 degrees C were utilized to control the N-doping level of the CSCNs; the N-content of CSCN processed at 600 degrees C is higher than that processed at 900 degrees C. After judicious activation process to fine-tune ultramicroporosity ( < 1 nm) by hot CO2 treatment, the CSCN obtained from 600 degrees C with the most developed ultramicroporosity showed higher CO2 uptake capacity compared to that of CSCN carbonized at 900 degrees C due to higher N-doping level, although the ultramicroporosity of the two samples is similar. In contrast, similar CH4 sorption capacities were identified for these samples. In addition, very efficient and selective separation of CO2/N-2 was achieved from CSCN carbonized at 600 degrees C with maximum ultramicroporosity; meanwhile, similar selective separations of CH4/N-2 were observed for both of the most activated CSCNs. As a result, the relationship between the ultramicroporosity and CO2 and CH4 uptake capacities, and N-doping effect are clearly elucidated.
This work was supported by the Korea Environmental Industry and Technology Institute (KEITI, No. 2016000200005).
en_US
ELSEVIER SCIENCE BV
Crab shell-derived carbon
N-doped carbon
CO2 adsorption
CH4 adsorption
CO2/N-2 and CH4/N-2 separation
N-doping and ultramicroporosity-controlled crab shell derived carbons for enhanced CO2 and CH4 sorption
Article
272
10.1016/j.micromeso.2018.06.021
92-100
MICROPOROUS AND MESOPOROUS MATERIALS
Kim, Hee Soo
Kang, Min Seok
Lee, Seunghun
Lee, Yong-Woo
Yoo, Won Cheol
2018001058
E
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E]
DEPARTMENT OF CHEMICAL AND MOLECULAR ENGINEERING
wcyoo