| 二氧化钛介孔分子筛的合成和表征 |
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| 引用本文： | 乐英红,马臻,华伟明,高滋. 二氧化钛介孔分子筛的合成和表征[J]. 化学学报, 2000, 58(7): 777-780 |
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| 作者姓名： | 乐英红 马臻 华伟明 高滋 |
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| 作者单位： | 复旦大学化学系,上海,200433 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，2000077500， |
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| 摘 要： | 以高嵌段共聚物为模板剂在中性条件下制备二氧化钛介孔分子筛，并以TG-DTA，XRD，TEM和N~2吸附方法对脱除模板剂后的样品进行了表征。实验结果表明，该介孔分子筛具有较高的比表面，以及六方堆积的均匀孔道，焙烧过程中孔壁可部分晶化成锐钛矿型TiO~2的小晶粒。在分子筛孔壁中引入稀土元素可提高介孔结构稳定性。
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| 关 键 词： | 二氧化钛 分子筛 热重量分析 Ｘ射线衍射分析 透射电子显微术 |
| 修稿时间： | 2000-04-26 |
Synthesis and characterization of mesoporous titanium dioxide |
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| YUE Ying-Hong,MA Zhen,HUA Wei-ming,GAO Zi. Synthesis and characterization of mesoporous titanium dioxide[J]. Acta Chimica Sinica, 2000, 58(7): 777-780 |
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| Authors: | YUE Ying-Hong MA Zhen HUA Wei-ming GAO Zi |
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| Affiliation: | Fudan Univ, Dept Chem.Shanghai(200433) |
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| Abstract: | Ordered mesoporous titanium oxides were synthesized using a block copolymer as a structure -directing agent through N0I0 assembly pathway. The calcined mesoporous samples were characterized by TG -DTA, XRD, TEM and N2 adsorption methods. These mesoporous oxides have inorganic framework and thick channel wall, in which small crystallites of anatase TiO2 can be formed during calcination. The incorporation of Ce3 ions into the channel wall dramatically improves the stability of the mesoporous structure. |
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| Keywords: | mesoporous molecular sieves titanium dioxide synthesis characterization |
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