Effect of Granule Size on the Structure of Nanoporous Ceramics Based on Organosilicon Polymer |
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Authors: | A. V. Belyakov N. N. Fomin D. Koch |
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Affiliation: | (1) D. I. Mendeleev Russian Chemical Engineering University,, Moscow,, Russia;(2) Bremen University,, Bremen,, Germany. |
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Abstract: | Porosity in nanoporous ceramics produced by pyrolysis of organosilicon polymer at a temperature of 600°C was investigated using the BET method. Samples were molded from fractionated granules produced by single or double milling in a planetary mill of a polymer previously solidified and heat-treated at 200°C. Specific surface area depending on nanopores sharply decreases after the granules reach a size over 250 m in single milling and over 1000 m in double milling. An explanation for these facts is given in the context of synergism. |
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