Preparation of supports for catalysis by the 'gel route'
| Autor: | G. Navazio, V. Gottardi, Giovanni Carturan, G. Facchin |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Materials science
engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Catalysis Metal Glass microsphere Coating Chemical engineering law visual_art Materials Chemistry Ceramics and Composites engineering visual_art.visual_art_medium Thermal stability Electron microscope Porosity Gel method |
| Zdroj: | Journal of Non-Crystalline Solids. 63:273-281 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/0022-3093(84)90406-x |
| Popis: | The surface area thermal stability of SiO2/Al2O3/Na2O supports prepared from alkoxides was studied as a function of time and temperature. The results indicate substantial stability in time at temperatures ⩽ 250°C, whereas a progressive fall in porosity was observed at higher temperatures. New supports were prepared by coating glass microspheres with a thin layer of porous oxides. The formation of the porous layer was achieved by extending the gel method to the coating technique. Surface area, electron microscopy results and other features relevant to these systems are presented and discussed. The data suggest that these materials may be exploited as effective supports for metallic catalysts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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