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Precursor structure and hydrolysis-gelation process of Al(O-sec-Bu)3 modified with ethylacetoacetate

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Abstract

The precursor structure and hydrolysis-gelation process of aluminum-sec-butoxide, Al(O-sec-Bu)3, modified with ethylacetoacetate (EAcAc) were investigated using IR, UV and high magnetic field (11.7 T) 27Al NMR spectra. 27Al NMR showed that the reaction of EAcAc with Al(O-sec-Bu)3 led to the formation of six-coordinated structural units and most of the precursors were assumed to be present as linear trimer containing a four- and two six-coordinated Al atoms. It was found that EAcAc formed the strong chelating bonds with Al(O-sec-Bu)3, which were hardly hydrolyzed by the attack of water molecules in the gelation process.

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Author notes

  1. Noboru Tohge

    Present address: Department of Metallurgy, Faculty of Science and Technology, Kinki University, Higashi-Osaka, 577, Osaka, Japan

Authors and Affiliations

  1. Department of Applied Materials Science, College of Engineering, Osaka Prefecture University, 593, Sakai, Osaka, Japan

    Kiyoharu Tadanaga, Tomoaki Iwami, Noboru Tohge & Tsutomu Minami

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  1. Kiyoharu Tadanaga
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  2. Tomoaki Iwami
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  3. Noboru Tohge
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  4. Tsutomu Minami
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Tadanaga, K., Iwami, T., Tohge, N. et al. Precursor structure and hydrolysis-gelation process of Al(O-sec-Bu)3 modified with ethylacetoacetate. J Sol-Gel Sci Technol 3, 5–10 (1994). https://doi.org/10.1007/BF00490143

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  • DOI: https://doi.org/10.1007/BF00490143

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