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| 论文编号: |
122214O120110128 |
| 第一作者所在部门: |
909组 |
| 中文论文题目: |
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| 英文论文题目: |
SiC-dopped MCM-41 materials with enhanced thermal and hydrothermal stabilities
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| 论文题目英文: |
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| 作者: |
郭向云
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| 论文出处: |
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| 刊物名称: |
Materials Research Bulletin
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| 年: |
2011
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| 卷: |
46 |
| 期: |
11 |
| 页: |
2187 |
| 联系作者: |
郭向云 |
| 收录类别: |
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| 影响因子: |
2.146
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| 摘要: |
SiC-dopped MCM-41 mesoporous materials were synthesized by the in situ hydrothermal synthesis, in which a small amount of SiC was added in the precursor solvent of molecular sieve before the hydrothermal treatment. The materials were characterized by X-ray diffraction, transmission electron
microscopy, X-ray photoelectron spectroscopy, N2 physical adsorption and thermogravimetric analysis,respectively. The results show that the thermal and hydrothermal stabilities of MCM-41 materials can be improved obviously by incorporating a small amount of SiC. The structure collapse temperature of SiCdopped MCM-41 materials is 100 8C higher than that of pure MCM-41 according to the differential scanning calorimetry analysis. Hydrothermal treatment experiments also show that the pure MCM-41 will losses it’s ordered mesoporous structure in boiling water for 24 h while the SiC-dopped MCM-41
materials still keep partial porous structure. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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