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Updated: Jun 26, 2026
08:46
Methane Hydrate Crystallization on Sessile Water Droplets
Published on: May 26, 2021
Effect of interlayer ions on methane hydrate formation in clay sediments
Sun-Hwa Yeon1, Jiwoong Seol, Young-ju Seo
1Chemical and Biomolecular Engineering Department, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
The Journal of Physical Chemistry. B
|January 13, 2009
Summary
Clay
Area of Science:
- Geochemistry
- Materials Science
Background:
- Marine methane hydrates (MH) exhibit complex phase behavior within clay sediments.
- The influence of clay interlayers on MH formation and stability is not fully understood.
Purpose of the Study:
- To investigate the impact of clay interlayers on natural methane hydrate formation and stability.
- To characterize the structure and properties of intercalated methane hydrates.
Main Methods:
- Solid-state NMR spectroscopy (27Al, 29Si, 23Na, 13C MAS NMR) to analyze chemical shifts and methane interactions.
- Cryogenic transmission electron microscopy (cryo-TEM) to determine morphology.
- X-ray diffraction (XRD) to identify layered structures.
Main Results:
- Observed distinct chemical shift differences in clay components upon methane hydrate intercalation.
- Revealed abnormal methane distribution within Na-montmorillonite and Ca-montmorillonite.
- Identified the morphology and layered structure of intercalated methane hydrates.
Conclusions:
- The actual methane content in natural deposits requires reevaluation considering clay characteristics.
- The structure of intercalated methane hydrates is crucial for developing in situ production technologies.
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