| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 봄 (04/22 ~ 04/24, 제주 ICC) |
| 권호 |
21권 1호, p.1061 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Adsorption of CO2 on microporous materials with different surface heterogeneity at high pressures |
| 초록 |
Microporous sorbents with different surface heterogeneity have been studied for CO2 adsorption up to high pressures, such as 7.5 bar that is a common pressure of many industrial PSA systems. At 25oC, the extent of CO2 adsorption strongly depended on the adsorbents used, zeolites, activated carbons (AC) and metal-organic framework (MOF) materials. The zeolites had the highest surface nonuniformity, while the surface of MOFs was relatively much less heterogeneous. The ACs disclosed an intermediate character between the zeolites and MOFs. Such difference in the surface features could be well correlated to distinctive CO2 adsorption capacities among the sorbents. The measured uptake near 7.5 bar was the highest when an AC was used, while all MOFs showed the lowest CO2 uptake at whole pressures allowed. These results could not be successfully explained by textual properties and microporosity of the adsorbents. It is proposed that microporous materials with moderate electric field potentials are better for CO2 adsorption at high pressures. |
| 저자 |
조일흠1, 박중호1, 김문현1, 최상옥2, 이인수2, 추수태2
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| 소속 |
1대구대, 2삼성비피화학 |
| 키워드 |
CO2 uptake; zeolites; activated carbons; MOF
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| E-Mail |
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| 원문파일 |
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