Experimental investigation of thermal insulating aerogel composites of hydrothermal reactor for biomass-to-hydrogen conversion
| Autor: | A. D. Vedenin, L. V. Sudnik, P. A. Vityaz, I. S. Ivanova, Andrey Pustovgar, Yu. A. Mazalov |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment business.industry Opacifier Energy Engineering and Power Technology chemistry.chemical_element HYDROSOL Aerogel 02 engineering and technology Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Hydrothermal circulation 0104 chemical sciences chemistry.chemical_compound Fuel Technology chemistry Thermal insulation Titanium dioxide Composite material 0210 nano-technology business |
| Zdroj: | International Journal of Hydrogen Energy. 43:6899-6903 |
| ISSN: | 0360-3199 |
| Popis: | The paper presents aerogel SiO2–TiO2 composites used for thermal insulation of hydrothermal reactor for biomass-to-hydrogen conversion and the method of their production. The technology of aerogel composites production includes the following stages: ion exchange of liquid Na-glass resulting in production of silica hydrosol; hydrosol concentration; hydrogel production and its maturing; SiO2–TiO2 alcogel production; modification of its surface; subcritical drying of alcogel resulting in production of SiO2–TiO2 ambigel; its thermal treatment, granulating and classification. The influences of infrared opacifier (titanium dioxide) and thermal treatment temperature of SiO2–TiO2 composite on its structural and thermal characteristics have been investigated. Possibilities of hydrogen yield increase by reduction of power waste by means of vacuumized thermal insulation for reactor walls have been examined. |
| Databáze: | OpenAIRE |
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