| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
The self-preservation phenomenon of methane hydrate was successfully observed below the melting point of its dihydrate, even for methane hydrate samples containing NaCl. The correlation between the occurrence of self-preservation of methane hydrate and the existence of a liquid layer was investigated, and it was predicted that the diffusion of the gas generated by decomposition would be suppressed when the outer surface of the methane hydrate particles was covered with a solid. In addition, a system for in-situ observation of the decomposition process in a high-pressure vessel has been developed using X-ray CT method.
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