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Kaolinite-Pyridine Intercalation Compound Derived from Hydrated Kaolinite

Published online by Cambridge University Press:  02 April 2024

Yoshiyuki Sugahara
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo, Shinjuku-ku, Tokyo 160, Japan
Shigeo Satokawa
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo, Shinjuku-ku, Tokyo 160, Japan
Ken-Ichi Yosioka
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo, Shinjuku-ku, Tokyo 160, Japan
Kazuyuki Kuroda
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo, Shinjuku-ku, Tokyo 160, Japan
Chuzo Kato
Affiliation:
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Ohkubo, Shinjuku-ku, Tokyo 160, Japan
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Abstract

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A kaolinite-pyridine intercalation compound was prepared using hydrated kaolinite as an intermediate. Hydrated kaolinite having a basal spacing of 10 Å was treated with pyridine to form a well-ordered intercalation compound having a basal spacing of 12.0 Å. Infrared spectroscopy indicated the presence of hydrogen bonding between the hydroxyls of the kaolinite and the pyridine. 29Si nuclear magnetic resonance spectroscopy with cross polarization and magic-angle spinning revealed that intercalated pyridine affected the environment of silicon. The mono-substituted pyridine derivatives were also intercalated with hydrated kaolinite. On the basis of the basal spacings of the intercalation compounds and the stabilities of the derivatives between the layers, the pyridine appeared to be in an approximately perpendicular position, with the nitrogen facing the gibbsitic sheets.

Information

Type
Research Article
Copyright
Copyright © 1989, The Clay Minerals Society