Abstract
Thermally stable SiC hollow spheres were prepared using SiO2 templates with two layers. At the calcination at higher than 1300 °C, the SiC hollow sphere could be obtained. The shell thickness of the porous SiC hollow spheres can be controlled by the molar ratio of TMS/TEOS. The pore volumes and BET surface areas of the template SiO2 increased with the molar ratio of TMS/TEOS, while those of the SiC/SiO2 and SiC spheres decreased. It is evident that the pore sizes of the SiC hollow spheres were not influenced by the TMS/TEOS ratio. The wall thickness of the SiC sample increased with an increase in the TMS/TEOS mole ratio. The prepared SiC hollow spheres with the surface area higher than 770 m2/g were thermally stable up to temperatures higher than 700°C.
| Original language | English |
|---|---|
| Pages (from-to) | 11-17 |
| Number of pages | 7 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 199 |
| DOIs | |
| Publication status | Published - 2014 Nov 15 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
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Synthesis of thermally stable porous SiC hollow spheres and control of the shell thickness. / Noh, Seong Cheol; Lee, Seung Young; Kim, Sungrye; Yoon, Sungho; Shul, Yong-Gun; Jung, Kwang Deog.
In: Microporous and Mesoporous Materials, Vol. 199, 15.11.2014, p. 11-17.Research output: Contribution to journal › Article
TY - JOUR
T1 - Synthesis of thermally stable porous SiC hollow spheres and control of the shell thickness
AU - Noh, Seong Cheol
AU - Lee, Seung Young
AU - Kim, Sungrye
AU - Yoon, Sungho
AU - Shul, Yong-Gun
AU - Jung, Kwang Deog
PY - 2014/11/15
Y1 - 2014/11/15
N2 - Thermally stable SiC hollow spheres were prepared using SiO2 templates with two layers. At the calcination at higher than 1300 °C, the SiC hollow sphere could be obtained. The shell thickness of the porous SiC hollow spheres can be controlled by the molar ratio of TMS/TEOS. The pore volumes and BET surface areas of the template SiO2 increased with the molar ratio of TMS/TEOS, while those of the SiC/SiO2 and SiC spheres decreased. It is evident that the pore sizes of the SiC hollow spheres were not influenced by the TMS/TEOS ratio. The wall thickness of the SiC sample increased with an increase in the TMS/TEOS mole ratio. The prepared SiC hollow spheres with the surface area higher than 770 m2/g were thermally stable up to temperatures higher than 700°C.
AB - Thermally stable SiC hollow spheres were prepared using SiO2 templates with two layers. At the calcination at higher than 1300 °C, the SiC hollow sphere could be obtained. The shell thickness of the porous SiC hollow spheres can be controlled by the molar ratio of TMS/TEOS. The pore volumes and BET surface areas of the template SiO2 increased with the molar ratio of TMS/TEOS, while those of the SiC/SiO2 and SiC spheres decreased. It is evident that the pore sizes of the SiC hollow spheres were not influenced by the TMS/TEOS ratio. The wall thickness of the SiC sample increased with an increase in the TMS/TEOS mole ratio. The prepared SiC hollow spheres with the surface area higher than 770 m2/g were thermally stable up to temperatures higher than 700°C.
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U2 - 10.1016/j.micromeso.2014.07.053
DO - 10.1016/j.micromeso.2014.07.053
M3 - Article
AN - SCOPUS:84906337301
VL - 199
SP - 11
EP - 17
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
ER -