| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.428 |
| 발표분야 |
에너지 |
| 제목 |
Effect of Interlayer Ions on Methane Hydrate inNa-montmorillonite |
| 초록 |
Natural methane hydrates occurring in marine clay sediments exhibit heterogeneous phase behavior withhigh complexity, particularly in the negatively charged interlayer region. To date, the real clay interlayer effect on natural methane hydrate formation and stability remains still much unanswered. We first examined the chemical shift difference of 27Al, 29Si, and 23Na between dry clay and clay containing intercalated methane hydrates (MH) in the interlayer. We also measured the solid-state 13C MAS NMR spectra of MH in Na-montmorillonite (MMT) and Camontmorillonite (MMT) to reveal abnormal methane popularity established in the course of intercalation and further performed cryo-TEM and XRD analyses to identify the morphology and layered structure of the intercalated methane hydrate. The present findings strongly suggest that the real methane amount contained in natural MH deposits should be reevaluated under consideration of the compositional, structural, and physical characteristics of clay-rich sediments. Furthermore, the intercalated methane hydrate structure should be seriously considered for developing the in situ production technologies of the deep-ocean methane hydrate.
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| 저자 |
설지웅1, 고동연1, 박근필2, 허대기2, 이재형2, 이 흔1
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| 소속 |
1KAIST 생명화학공학과, 2한국지질자원(연) |
| 키워드 |
methane hydrate; clay sediment; Na-montmorillonite
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| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
