2-2-2　微粉末氷とメタンを接触させて生成したハイドレートの純度と比表面積変化

抄録

Gas hydrates can store copious amounts of guest gas molecules and it is expected to be used as a gas storage medium. Since it is required to efficiently form gas hydrate for the purpose of gas storage, we focused the effect of specific surface area on the purity of gas hydrate. We formed gas hydrate samples using fine ice powder and high-pressure methane, measured specific surface area of the samples, and estimated their purity supposing that the hydration number of methane hydrate was 6. The purity of methane hydrate showed maximum at around 250K. In the case of high temperature, decrease in the specific surface area of methane hydrate affected the formation speed of methane hydrate.