Intercalation of Monoalkylamines and Aniline into Layered Aluminium Dihydrogentriphosphate

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Other Title
  • 層状三リン酸二水素アルミニウムへのアルキルアミンおよびアニリンのインターカレーション

Description

Intercalation of monoalkylamines and aniline into layered aluminium dihydrogentriphosphate dihydrate, A1112133010H.2 0 (abbreviated to ADHP), was examined by using powder X-ray diffraction method, DTA-TG, and IR spectroscopy. A linear relationship was recognized b e tween carbon numbers of alkylamines and the interlayer spacings of intercalation compounds. The slope of the straight line was 2.1, sugge s ting the formation of bilayers such that alkylamines are intercalated into ADHP lay e r at a tilting angle 563. The interlayer spacing (d=7.9A) of ADHP was extended to 18.8A. by intercalation of aniline. When the facility of intercalation of alkylamines into ADHP w a s compared, alkylamines of relatively large carbon numbers such as octyl-(C8) and decylam i ne (C, o) were intercalated more readily into ADHP than those of small carbon number s (C1--C4)or of carbon numbers above C, 2. When intercalation compou n d s of methyl-, ethyl-, and propylamine were treated with 0.1moldm-3 phosphoric acid, these alkylamines in interlayer were removed to give the origin al ADHP. However, intercalation compounds of alkylamines of carbon numbers above C 6 and aniline showed stronger water-repellency and floated on water surface. Results of DTA a nd TG revealed that alkylamines and aniline were held firmly between ADHP layers and thu s, were stable at above their boiling points. Alkylamines intercalated in ADHP began to de c ompose at around 350°C.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1992 (9), 944-950, 1992-09-10

    The Chemical Society of Japan

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