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Mg-O-Si Chemical Bond Formation in Light Burned Magnesia and Fumed Silica Mixture During Mechanical Activation

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Interceram - International Ceramic Review

Abstract

Mg-O-Si chemical bond formation in a light burned magnesia (MgO) and fumed silica (SiO2) mixture during mechanical activation was investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), magic angle spinning nuclear magnetic resonance (MAS-NMR), and X-ray photoelectron spectroscopy (XPS). Crystallinity and intrinsic structure changes of the starting mixture during high-energy milling were examined by XRD. The formation of new Mg-O-Si chemical bonds of the ground mixture was illustrated by the incorporation of Mg2+ in Si-O-Si linkages, the appearance of new resonance in the 29Si NMR spectrum and the decrease of the Si 2p binding energy. The formation of Mg-O-Si chemical bonds created during grinding partly contributed to the lowered temperature of complete forsterite formation from 1400 to 1100°C.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 45001, China

    Liugang Chen & G. Ye

  2. Department of Metallurgy and Materials Engineering (MTM), KU Leuven, Leuven, 3001, Belgium

    Liugang Chen, A. Malfliet, B. Blanpain & M. Guo

  3. Centre for Surface Chemistry and Catalysis, KU Leuven, Leuven, 3001, Belgium

    J. Dijkmans & B. Sels

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  1. Liugang Chen
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  2. G. Ye
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  3. A. Malfliet
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  4. J. Dijkmans
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  5. B. Sels
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  6. B. Blanpain
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  7. M. Guo
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Correspondence to Liugang Chen.

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Chen, L., Ye, G., Malfliet, A. et al. Mg-O-Si Chemical Bond Formation in Light Burned Magnesia and Fumed Silica Mixture During Mechanical Activation. Interceram. - Int. Ceram. Rev. 64, 90–93 (2015). https://doi.org/10.1007/BF03401106

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  • DOI: https://doi.org/10.1007/BF03401106

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