| Autor: | A. Yu. Derevyankin, V.N. Romannikov, V. B. Fenelonov, A. N. Shmakov |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Russian Chemical Bulletin. 50:175-179 |
| ISSN: | 1066-5285 |
| DOI: | 10.1023/a:1009562211012 |
| Popis: | The results of investigation of mesoporous mesophase materials C12--SiO2--MMM and C16--SiO2--MMM prepared at the optimized composition of the reaction mixture and different durations of hydrothermal treatment (HTT) at 120 °C and 140 °C are presented. Hydrothermal treatment at 120 °C influences slightly the specific surface area and the volume of the mesopores but gives a more ordered structure. Prolonged HTT at 140 °C results in irreversible structure degradation. The samples obtained with the optimal HTT duration are characterized by the minimum width of X-ray reflections, the maximum surface and volume of mesopores, and the minimum external surface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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