| TiO2-CeO2介孔复合氧化物的合成及应用 |
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| 引用本文： | 张雪红,唐星华,程新孙.TiO2-CeO2介孔复合氧化物的合成及应用[J].物理化学学报,2006,22(5):532-537. |
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| 作者姓名： | 张雪红 唐星华 程新孙 |
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| 作者单位： | Department of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, P. R. China; Department of Chemistry, Nanchang University, Nanchang 330047, P. R. China |
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| 基金项目： | 南昌航空工业学院校科研和教改项目 |
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| 摘 要： | 以氯化十六烷基吡啶(C16PyCl)为模板剂, 在室温、中性条件下合成了TiO2-CeO2介孔复合氧化物, 分别用红外光谱(FT-IR)、X射线粉末衍射(XRD)和BET 比表面测定等技术对介孔TiO2的结构、晶相和比表面积进行了表征. 结果表明, Ce4+的引入能稳定介孔结构. 负载活性组分Ru 后, Ru 颗粒与介孔复合载体发生相互作用, 尽管可能会部分堵塞孔道, 但对于甲醇分解为CO 和H2, Ru/m-TiO2-CeO2的催化活性依然远高于Ru/m-TiO2. Ru 和CeO2之间的相互作用对甲醇分解反应表现出协同效应.
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| 关 键 词： | 介孔二氧化钛 铈 钌 甲醇分解 催化剂载体 |
| 收稿时间： | 2005-11-02 |
| 修稿时间： | 2005-11-022005-11-21 |
Synthesis and Application of Ce-doped Mesoporous TiO2 |
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| ZHANG Xue-Hong,TANG Xing-Hua,CHENG Xin-Sun.Synthesis and Application of Ce-doped Mesoporous TiO2[J].Acta Physico-Chimica Sinica,2006,22(5):532-537. |
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| Authors: | ZHANG Xue-Hong TANG Xing-Hua CHENG Xin-Sun |
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| Institution: | Department of Environmental and Chemical Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034, P. R. China; Department of Chemistry, Nanchang University, Nanchang 330047, P. R. China |
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| Abstract: | Mesoporous TiO2-CeO2(m-TiO2-CeO2) was synthesized using n-cetylpyridinium chloride(C16PyCl) as a structure-directing agent under room temperature and neutral condition. The as-synthesized mesoporous samples were characterized by FT-IR, XRD, and N2 adsorption methods. The incorporation of Ce4 ions into the channel wall dramatically improves the mesoporous structure. After ruthenium loaded by the impregnating method, the Ru particles strongly interact with the mesoporous mixed supports. Although a fairly large part of the particles are considered to be confined in the blind pores, the catalytic activity of ruthenium supported on m-TiO2-CeO2 for methanol decomposition to carbon monoxide and hydrogen is significantly higher than that of ruthenium supported on m-TiO2. A synergistic effect between Ru and CeO2 was observed for promoting the catalytic properties of Ru. |
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| Keywords: | Mesoporous titanium oxide Cerium Ruthenium Methanol decomposition Catalyst support |
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