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A Comparison of the Formation of SiO2 Particles Under the Catalysis of Dodecylamine and Ammonia Solutions

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Abstract

SiO2 products were prepared by the hydrolysis and condensation of tetraethyl orthosilicate with ammonia and dodecylamine (DDA) solutions as the basic catalyst, respectively. Thermal gravimetric analysis, scanning electron microscope and N2-sorption were used to characterize the synthesized products. The results show that the morphology and textural characteristics of the products prepared in inorganic ammonia and organic amine solutions with the same pH value are quite different. Uniform non-porous silica microspheres and agglomerated sphere-like microporous silica particles with large surface area and pore volume are obtained with the addition of ammonia and DDA solutions, respectively. The differences are due to the different roles that ammonia and DDA solutions play in the silica formation process.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (50972052) and the Promotive Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province (2009CL014).

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Authors and Affiliations

  1. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China

    Hui Zhao, Haixia Wang & Shiquan Liu

  2. School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China

    Ying Xin & Zhaoliang Zhang

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  1. Hui Zhao
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  2. Ying Xin
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  3. Haixia Wang
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  4. Zhaoliang Zhang
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  5. Shiquan Liu
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Correspondence to Shiquan Liu.

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This manuscript is intended for the first international Congress on Advanced Materials, 13–16 May 2011, Jinan, China.

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Zhao, H., Xin, Y., Wang, H. et al. A Comparison of the Formation of SiO2 Particles Under the Catalysis of Dodecylamine and Ammonia Solutions. J Inorg Organomet Polym 21, 925–928 (2011). https://doi.org/10.1007/s10904-011-9541-3

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  • DOI: https://doi.org/10.1007/s10904-011-9541-3

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