| 학회 |
한국공업화학회 |
| 학술대회 |
2013년 봄 (05/01 ~ 05/03, ICC JEJU) |
| 권호 |
17권 1호 |
| 발표분야 |
포스터-환경에너지 |
| 제목 |
Photo-assisted Pre-oxidation of Activated Carbon Pellets for CO2 Selective Adsorption |
| 초록 |
A CO2 adsorbent was prepared by two-step treatment viz pre-oxidation and amination. Ozone and hydroperoxide were used as pre-oxidants with and without UV-C irradiation. Chemical characterization revealed that all pre-oxidation conditions increased the total amount of oxygen tethered on the carbon surface but in the presence of UV-C, larger amount of new functional groups were formed while the total amount of O-groups were reduced. Upon amination, specific oxygen groups such as ether, carbonyl and carboxylic groups were subject to form N-groups as pyridine and pyrrole-N types which comparatively showed higher affinity for CO2. These N-groups were found in larger amounts in carbons pre-oxidized with O3 under UV-C. Smaller micropores might have contributed to the enhanced CO2 selectivity. H2O2 yielded the least improvement while O3 with UV-C brought about the best result, both improving the low-level adsorption capacity of RAC from 0.016mmol/g to 0.088 and 0.260mmol/g. |
| 저자 |
조영민1, 임윤희1, Adelodun Adedeji Adebukola1, 박영구2, 김상범3
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| 소속 |
1경희대, 2강원대, 3한국생산기술(연) |
| 키워드 |
activated carbon; CO2; selective adsorption
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| E-Mail |
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