| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.2263 |
| 발표분야 |
열역학 |
| 제목 |
Tuning Phenomenon Appearing in CH4 + THF Double Clathrate Hydrates and Analysis by Using 13C NMR Spectroscopy |
| 초록 |
The concept of tuning phenomenon in double hydrate systems has been suggested to enhance the gas storage capacity through molecular interactions. In this report, the existence of critical guest concentration (CGC) is investigated by using 13C NMR spectroscopy in CH4 + THF (tetrahydrofuran) double clathrate hydrate. The temperature and pressure conditions were kept constant at 268 K and 20 bar to avoid any possible appearance of pure CH4 hydrate. The hydrate samples for NMR spectra were prepared from 5.6 to 0.05 mol% at the stoichiometric THF concentration. The cage occupancy ratio could be obtained from experimental NMR peak areas in combination with the thermodynamic equation of van der Waals and Platteeuw. The value increases continuously until it reaches a maximum, CGC, at a specific THF concentration of 0.2 mol%. We confirmed that the general tuning patterns at two different pressures of 20 and 100 bars are found to be essentially the same. |
| 저자 |
박제성, 이 흔
|
| 소속 |
한국과학기술원 |
| 키워드 |
gas hydrate; Tetrahydrofuran; methane; tuning phenomenon
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
