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| 论文编号: |
122214O120110076 |
| 第一作者所在部门: |
610组 |
| 中文论文题目: |
具有酸性外壳的中空介孔硅铝分子筛球
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| 英文论文题目: |
Hollow mesoporous aluminosilicate spheres with acidic shell
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| 论文题目英文: |
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| 作者: |
徐耀
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| 论文出处: |
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| 刊物名称: |
MATERIALS CHEMISTRY AND PHYSICS
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| 年: |
2011
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| 卷: |
125 |
| 期: |
1 |
| 页: |
286 |
| 联系作者: |
徐耀 |
| 收录类别: |
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| 影响因子: |
2.356
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| 摘要: |
Hollow mesoporous aluminosilicate spheres (HMAS) with middle strong acidity have been successfully synthesized by simply hydrothermally treating mesoporous silica spheres (MSS) in zeolite precursor solution. Based on a set of time-dependent experiments, it was found that the hollowing process
was associated with a progressive mass redistribution and changes of pores structures. The surfactant cetyltrimethylammonium bromide (CTAB) located in the pores of MSS protected the mesoporous silica spheres from dissolving into strongly basic zeolite precursor solution and acted as the template for
mesoporous shell. Under the templating function of CTAB, primary zeolite units were introduced into the mesopore walls of HMAS. The acidity of the resultant samples HMAS was measured by NH3-TPD techniques. Catalytic tests showed that the HMAS catalysts exhibited high catalytic activity compared with the MSS and H zeolite for catalytic cracking of 1,3,5-triisopropylbenzene. |
| 英文摘要: |
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