| 학회 |
한국화학공학회 |
| 학술대회 |
2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 |
25권 2호, p.1401 |
| 발표분야 |
분리기술 (Separation Technology) |
| 제목 |
Aminopolymer-Impregnated Hierarchical Silica Structures: Unexpected Equivalent CO2 Uptake under Simulated Air Capture and Flue Gas Capture Conditions |
| 초록 |
PEI-impregnated sorbents are prepared using a hierarchical silica support with bimodal meso-/macroporosity. Unexpectedly, the sorbents show almost similar uptake capacities under 400 ppm and 10 % dry CO2 at 30 oC with exhibiting step-like CO2 adsorption isotherms. This unusual observation is rationalized via a hypothesized sorption mechanism. While the sorption performance at 30 oC is identical under 400 ppm and 10% CO2 conditions, there is an optimal temperature at each gas concentration where uptake is maximized. The maximum sorption capacities are 2.6 and 4.1 mmol CO2/g sorbent at the optimum temperatures using 400 ppm and 10 % dry CO2, respectively. The presence of water vapor under 400 ppm CO2 conditions further improves the sorption capacity to 3.4 mmol/g sorbent, which is the highest capacity under direct air capture (DAC) conditions among known amine sorbents impregnated with a similar polymer.
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| 저자 |
권혁택1, Miles A. Sakwa-Novak2, Simon H. Pang3, Achintya R. Sujan4, Eric W. Ping3, Christopher W. Jones4
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| 소속 |
1부경대, 2Global Thermostat LLC, 3United States, 4Georgia Institute of Technology |
| 키워드 |
CO2 분리; 흡착
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| E-Mail |
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| 원문파일 |
초록 보기 |
