Термічна деструкція поліфенілметилсилоксану на поверхні кремнезему і нанокомпозитів МХОY/SiO2
Temperature-programmed desorption mass spectrometry has been used for investigation of thermal transformations of polyphenylmethylsiloxane (PPMS) adsorbed on the surface of silica-based materials. Pyrogenic silica samples containing PPMS in amount 5–40 wt. % with respect to SiO2 mass and nanocomposi...
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| Date: | 2013 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | Russian |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2013
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| Online Access: | https://www.cpts.com.ua/index.php/cpts/article/view/245 |
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| Journal Title: | Chemistry, Physics and Technology of Surface |
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Chemistry, Physics and Technology of Surface| Summary: | Temperature-programmed desorption mass spectrometry has been used for investigation of thermal transformations of polyphenylmethylsiloxane (PPMS) adsorbed on the surface of silica-based materials. Pyrogenic silica samples containing PPMS in amount 5–40 wt. % with respect to SiO2 mass and nanocomposite samples MxOy/SiO2 (М – Cu, Mg, Mn, Ni and Zn) with PPMS amount 30 wt. % were studied. It has been shown that thermal destruction is accompanied by formation of benzene, methane, trimethylsilanol, water, toluene and trace amounts of compounds with masses of ions m/z more than 100. Effect of metal oxides on reaction products has been discussed as well as specific features of thermal desorption of water and its participation in surface reactions. |
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