Preparation and characterization of silica aerogels from oil shale ash
β Scribed by Gui-Mei Gao; Li-Na Miao; Gui-Juan Ji; Hai-Feng Zou; Shu-Cai Gan
- Book ID
- 113793190
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 655 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0167-577X
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The method of preparing spherical silica nanoparticles from the oil shale ash (OSA) via the ultrasonic technique in the hydrolysis-condensation stage followed by azeotropic distillation, was reported. The effects of ultrasonic and azeotropic distillation on the particle size and distribution have be
## Oil shale ash Silica aerogels Surface modification agents Mesoporous materials The silica aerogels based on oil shale ash were successfully synthesized in the presence of different surface modification agents via ambient pressure drying. The organic modification of hydrogels was a crucial step
According to their low densities, low refractive indices, Silica-titania and silica-alumina aerogels were prepared by the small pore sizes, and good transparencies, much attention two-step hydrolysis of metal alkoxides, the sol-gel polymerization has been given to silica aerogels in recent years for