Solid-Liquid and Liquid-Liquid Phase Equilibria in the Symmetrical Tetraalkylammonium Halide–Water Systems
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- Haruo Nakayama
- Department of Chemistry, Faculty of Engineering, Yokohama National University
書誌事項
- 公開日
- 1981-12-01
- 権利情報
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- https://academic.oup.com/pages/standard-publication-reuse-rights
- DOI
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- 10.1246/bcsj.54.3717
- 公開者
- Oxford University Press (OUP)
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説明
<jats:title>Abstract</jats:title> <jats:p>Solid-liquid and liquid-liquid phase diagrams of the binary R4NX–water (R=n-C3H7–n-C6H13 and i-C5H11; X=F, Cl, Br, and I) systems were determined in the temperature range between −20 °C and +80 °C. These diagrams showed (1) the formation of a clathrate-like hydrate for four salts (n-C5H11)4NF, (n-C5H11)4NCl, (i-C5H11)4NBr, and (i-C5H11)4NI; (2) a phase separation into two liquid phases in the systems of (n-C5H11)4NBr, (i-C5H11)4NBr, (n-C6H13)4NCl, and (n-C6H13)4NBr; (3) that the solubility (in water at a definite temperature) of a series of the salts did not show a systematic change with respect to either the alkyl-chain length or the kind of anion; and (4) that the salt which gave the maximum solubility in water at 25 °C was (n-C5H11)4NCl for chloride, (n-C4H9)4NBr for bromide, and (C2H5)4NI for iodide, respectively. The effect of anions on the solubilities of a series of salts having the same cation was examined. It was found that the ratio mcl⁄mI at 25 °C became as high as 22800 for the tetrapentylammonium salts. Phase diagrams for the bolaform salt [(n-C4H9)3N(CH2)6N(nC4H9)3]X2–water systems are also presented.</jats:p>
収録刊行物
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 54 (12), 3717-3722, 1981-12-01
Oxford University Press (OUP)
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詳細情報 詳細情報について
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- CRID
- 1360002219101650048
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- NII論文ID
- 130001987334
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- ISSN
- 13480634
- 00092673
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