| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 가을 (10/27 ~ 10/28, 고려대학교) |
| 권호 |
12권 2호, p.2261 |
| 발표분야 |
열역학 |
| 제목 |
Structure Transition and Swapping Pattern of Clathrate Hydrates Driven by External Guest Molecules |
| 초록 |
We report and discuss the structural transition to sI gas hydrate under strong attacks of external CH4 guest molecules by spectroscopic analysis. 13C High Power Decoupling NMR spectroscopy was used to identify structure change from strong CH4 atmosphere of the mixed CH4+C2H6 hydrate (sII) and hydrocarbon (methylcyclohexane, isopentane) + CH4 hydrate (sH). These NMR spectra showed that most of the prepared sII and sH hydrates were transformed to methane hydrate of sI under the methane pressure of 110 bar. In consideration of increase of CH4 generation by biogenic process in sea water, these structural transitions from dominant CH4 gas are expected to contribute towards the preponderant occurrence of sI natural hydrates in marine sediments. |
| 저자 |
연순화, 설지웅, 이 흔
|
| 소속 |
한국과학기술원 |
| 키워드 |
clathrate hydrate; methane; structure II
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
