- Tytuł:
- Preparation and Characterization of High Purity Silica Obtained from Rice Husks
- Autorzy:
- Şımşek, Y.
- Powiązania:
- https://bibliotekanauki.pl/articles/1031530.pdf
- Data publikacji:
- 2017-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
81.20.-n
81.20.Ka
81.40.-z - Opis:
- Although SiO₂ is produced mostly from mineral sources like quartz, it has recently been obtained from lignocellulosic natural resources, such as rice husk (hull). Several methods for extracting silica (SiO₂) from rice husks are available in the literature. These methods are based essentially on heat treatment and/or extraction. This study represents a thorough account of heat treatment and acid-base extraction, to obtain silica from rice husks with a high purity and to eliminate other inorganic impurities. Rice husks, considered to be a potential silica source, were pretreated with various acids, base and water and then thermally degraded in a fixed bed reactor under an inert gas atmosphere (N₂). The materials produced in these conditions were characterized by Brauner-Emmett-Teller analysis, for surface area and pore volume, by Fourier transform infrared spectroscopy, powder X-ray diffraction, X-ray fluorescence, and scanning electron microscopy.
- Źródło:
-
Acta Physica Polonica A; 2017, 132, 3; 1002-1005
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł