| 纳米氧化铈的醇热合成及性能 |
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| 引用本文： | 张晓丽,郑修成,王向宇,苏运来,吴世华. 纳米氧化铈的醇热合成及性能[J]. 郑州大学学报(理学版), 2007, 39(3): 145-149 |
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| 作者姓名： | 张晓丽 郑修成 王向宇 苏运来 吴世华 |
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| 作者单位： | 1. 郑州大学化学系,郑州,450001
2. 南开大学化学系,天津,300071 |
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| 摘 要： | 采用醇热法制备了CeO2纳米材料,并以此为载体通过浸渍法制备了CuO/CeO2催化剂.XRD、TEM及N2吸附分析结果表明,所制备的CeO2比表面大且结构有序性好.TPR和XPS分析证实CuO/CeO2催化剂中有不同的铜物种存在.催化性能评价结果则显示焙烧温度影响CuO/CeO2催化剂的催化性能,而且由于组分间的相互作用使得CuO/CeO2的催化活性远远高于单纯CuO和CeO2组分.
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| 关 键 词： | 醇热合成 CuO/CeO2催化剂 CO氧化 |
| 文章编号： | 1671-6841(2007)03-0145-05 |
| 修稿时间： | 2006-11-21 |
Alcohothermal Synthesis and Properties of Ceria Nanoparticles |
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| ZHANG Xiao-li,ZHENG Xiu-cheng,WANG Xiang-yu,SU Yun-lai,WU Shi-hua. Alcohothermal Synthesis and Properties of Ceria Nanoparticles[J]. Journal of Zhengzhou University(Natrual Science Edition), 2007, 39(3): 145-149 |
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| Authors: | ZHANG Xiao-li ZHENG Xiu-cheng WANG Xiang-yu SU Yun-lai WU Shi-hua |
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| Abstract: | CeO2 nanoparticles are prepared by an alcohothermal process and then used as supports for CuO/CeO2 catalysts prepared via impregnation method.The X-ray diffraction(XRD),transmission electron microscopy(TEM) and N2 sorption analytic results show that the as-prepared CeO2 has good crystallinity and large surface area.Temperature-programmed reduction(TPR) and X-ray photoelectron spectra(XPS) analysis indicate that there are different copper species in the CuO/CeO2 catalysts.The calcination temperatures affect the activity of CuO/CeO2 catalysts and the supported copper oxide catalysts exhibit obviously higher catalytic activity than pure CuO and CeO2 due to the synergistic effect. |
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| Keywords: | CeO2 alcohothermal synthesis ceria CuO/CeO2 catalyst CO oxidation |
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