Hydrates of organic compounds. V. The clathrate hydration of alcohols.
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概要
- 論文の詳細を見る
A new method for examining the ability of a given substance to form a hydrate with the same structure as that of a reference substance has been established. By using this method, for a series of alcohols ranging from methyl alcohol to pentyl alcohol, including their isomers, the ability to form a clathrate hydrate of either Structure I or Structure II has been investigated. It has been found that: (1) methyl alcohol has the ability to form both Structure I and II hydrates; (2) ethyl alcohol has the ability to form a Structure II hydrate; (3) all C<SUB>3</SUB>-alcohols (propyl, isopropyl, allyl, and propargyl alcohol) can actually form Structure II hydrates with relatively high (around −10 °C) incongruent melting points, and (4) among the C<SUB>4</SUB>- and C<SUB>5</SUB>-alcohols, only <I>t</I>-butyl alcohol has the ability to form a Structure II hydrate. However, it is uncertain for methyl and ethyl alcohols whether they actually can form such hydrates even in the absence of a reference substance. These results strongly suggest that the size and/or shape limitation plays an important role in the formation of alcohol hydrates with a gas-hydrate structure, just as has been found for the formation of ether and ketone hydrates.
- 公益社団法人 日本化学会の論文
著者
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Hashimoto Masayuki
Department Of Applied Science For Electronics And Materials Graduate School Of Engineering Sciences
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Hashimoto Masayuki
Department of Chemistry, Faculty of Engineering, Yokohama National University
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Nakayama Haruo
Department of Applied Chemistry, Faculty of Engineering, Yokohama National University
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