摘要
We report here a new route to prepare nanocrystalline β-silicon carbide with high specific surface areas and mesoporosity. The preparation method was via the reaction of ordered mesoporous carbons (OMCs, carbon replicas of MCM-48, SBA-15 and KIT-6) with silicon powder at the temperature of 1200-1300 °C, which is below the melting point of silicon, 1420 °C. The SiC samples were characterized by XRD, SEM, TEM, N2 adsorption and other techniques, which showed that the SiC samples were nanocrystalline and had a high surface area of up to 147 m2 g-1 and a mesoporosity in the range of 5-40 nm. In addition, the silicon vapor infiltration method at a temperature beyond 1420 °C was also brought into comparison.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 137-145 |
| 页数 | 9 |
| 期刊 | Microporous and Mesoporous Materials |
| 卷 | 82 |
| 期 | 1-2 |
| DOI | |
| 出版状态 | 已出版 - 5 7月 2005 |
| 已对外发布 | 是 |
指纹
探究 'Low-temperature formation of nanocrystalline β-SiC with high surface area and mesoporosity via reaction of mesoporous carbon and silicon powder' 的科研主题。它们共同构成独一无二的指纹。引用此
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