2-3-3 ハイドレートに包接された炭化水素ガスのラマンシフト(Session 2-3 ハイドレート物性I) 2-3-3 Raman shift of hydrate-bound hydrocarbons

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Natural gas hydrate contains not only methane, but also other higher hydrocarbons. We report Raman spectra of hydrate-bound hydrocarbons: methane, ethane, propane, iso-butane (2-methylpropane), n-butane, and neo-pentane (2,2-dimethylpropane). Because n-butane and neo-pentane need help gas to be encaged into large cages of the crystallographic structure II, we added krypton to be filled in small cages. We obtained their Raman spectra and revealed that the Raman peaks of hydrate-bound hydrocarbons shifted from those of solid or liquid phases. Raman intensities of C-C stretching mode were relatively larger; however, gauche and trans forms of n-butane complicated peak determination. The information of specific Raman peaks of hydrocarbons in the hydrate cages is useful to identify hydrate-bound hydrocarbons in natural gas hydrate.

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  • 日本エネルギー学会大会講演要旨集

    日本エネルギー学会大会講演要旨集 24(0), 48-49, 2015

    一般社団法人日本エネルギー学会

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