SYNTHETIC ALLOPHANE AND IMOGOLITE

Shin-Ichiro Wada, A. ETO, K. WADA

研究成果: ジャーナルへの寄稿記事

118 引用 (Scopus)

抄録

In order to prepare allophane and imogolite in the laboratory, solutions containing l–2× 10–3 M orthosilicic acid and 4–0.5 × 10–3 M A1C13 (SiO2/Al2O3 molar ratio; 0.5, 1.0, 2.0, 4.0 and 8.0) were heated at 95–100°C for 113 hours after addition of NaOH (NaOH/Al molar ratio; 1.0, 2.0, 2.8 and 3.0). Boehmite was found in the precipitates from all solutions with initial SiO2/Al2O3 ratios of 0.5. Imogolite was found with allophane II in the products from solutions with SiO2/Al2O3 ratios of 1.0 or greater and with NaOH/Al ratios of 2.8 or less (final pH 5.0), whereas allophane I was found in the precipitates from solutions with the same SiO2/Al2O3 ratios but with the NaOH/Al ratio of 3.0 (final pH = 5.0–6.3). The mode of formation, chemical composition, infrared spectra, electron micrographs, electron diffraction patterns and differential thermal analysis curves of synthetic imogolite and allophanes (I and II) were compared with those of their natural counterparts.

元の言語英語
ページ(範囲)347-355
ページ数9
ジャーナルJournal of Soil Science
30
発行部数2
DOI
出版物ステータス出版済み - 1 1 1979

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imogolite
allophane
Differential Thermal Analysis
electrons
Electrons
boehmite
electron
differential thermal analysis
thermal analysis
diffraction
chemical composition
Acids
acids
acid

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)
  • Earth and Planetary Sciences(all)

これを引用

SYNTHETIC ALLOPHANE AND IMOGOLITE. / Wada, Shin-Ichiro; ETO, A.; WADA, K.

:: Journal of Soil Science, 巻 30, 番号 2, 01.01.1979, p. 347-355.

研究成果: ジャーナルへの寄稿記事

Wada, S-I, ETO, A & WADA, K 1979, 'SYNTHETIC ALLOPHANE AND IMOGOLITE', Journal of Soil Science, 巻. 30, 番号 2, pp. 347-355. https://doi.org/10.1111/j.1365-2389.1979.tb00991.x
Wada, Shin-Ichiro ; ETO, A. ; WADA, K. / SYNTHETIC ALLOPHANE AND IMOGOLITE. :: Journal of Soil Science. 1979 ; 巻 30, 番号 2. pp. 347-355.
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