^<129>Xe NUCLEAR MAGNETIC RESONANCE STUDY ON THE PORE STRUCTURES OF SiO_2-TiO_2 SOL PILLARED CLAYS
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概要
- 論文の詳細を見る
^<129>Xe nuclear magnetic resonance (NMR) spectroscopy was used to investigate the microporous structures of SiO_2-TiO_2 sol pillared clays. The chemical shift of xenon adsorbed in the pillared clays was measured as a function of xenon pressure on the samples prepared by air-drying followed by calcination at temperatures of 200°-500℃. From the chemical shifts extrapolated to zero pressure, the pore diameters were determined to be 1.0-1.04nm, which is much smaller than the expansion of the basal spacing of about 3nm by the pillaring, and rather comparable to the dimensions estimated from a nitrogen adsorption study. As for the pillared samples prepared by a supercritical drying, the ^<129>Xe NMR measurement gave a chemical shift corresponding to the pores having an average diameter much larger than those of the air-dried samples.
- 日本粘土学会の論文
著者
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YAMANAKA SHOJI
Department of Pathology, Yokohama City University
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KUNII Katsuyuki
Department of Applied Chemistry, Faculty of Engineering, Hiroshima University
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Yamanaka Shoji
Department Of Applied Chemistry Faculty Of Engineering Hiroshima University
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TAKAHAMA KOICHI
Central Research Laboratory, Matsushita Electric Works, Ltd.
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SHIOTANI MASARU
Department of Applied Chemistry, Faculty of Engineering, Hiroshima University
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Shiotani M
Hiroshima Univ. Higashi‐hiroshima
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Shiotani Masaru
Department Of Applied Chemistry Faculty Of Engineering Hiroshima University
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Kunii K
Hiroshima Univ. Higashi‐hiroshima
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Kunii Katsuyuki
Department Of Applied Chemistry Faculty Of Engineering Hiroshima University
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Takahama Koichi
Central Research Laboratory Matsushita Electric Works Ltd.
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