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 |
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Pages (from-to) | 11-17 |
Number of pages | 7 |
Journal | Microporous and Mesoporous Materials |
Volume | 199 |
DOIs | |
Publication status | Published - 2014 Nov 15 |
Bibliographical note
Funding Information:The authors thank the Ministry of Science, ICT and Future Planning for financial support through a Korea CCS R&D Center (KCRC) grant and through the Nuclear Hydrogen Development and Demonstration (NHDD) project.
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials