| 不同沉淀剂对铈锆复合稀土氧化物性能的影响 |
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| 引用本文： | 阎忠君,王京刚,文明芬,陈靖,顾永万.不同沉淀剂对铈锆复合稀土氧化物性能的影响[J].北京化工大学学报(自然科学版),2005,32(3):9-12. |
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| 作者姓名： | 阎忠君 王京刚 文明芬 陈靖 顾永万 |
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| 作者单位： | 北京化工大学化学工程学院,北京,100029;清华大学核能与新能源技术研究院,北京,102201;北京化工大学化学工程学院,北京,100029;清华大学核能与新能源技术研究院,北京,102201;昆明贵研催化剂有限责任公司,云南,昆明,650101 |
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| 基金项目： | 云南省院校科技合作项目 |
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| 摘 要： | 通过选用不同的沉淀剂，利用共沉淀法制备出掺杂过渡金属元素（Fe，Mn，Cu）的CeO2-ZrO2多元稀土复合氧化物。样品用X射线衍射（XRD），液氮吸附法（BET）测定比表面积和H2程序升温还原(H2-TPR)等进行了表征。研究结果表明：以碳酸铵作为反应的沉淀剂制得的样品，可以较好的形成固溶体，并且该固溶体具有大的比表面积，良好的低温还原性能以及高的储氧能力。样品经过1000℃，4h处理后，会发生烧结，其高温热稳定性需要进一步的加强。
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| 关 键 词： | 稀土CeO2-ZrO2复合氧化物 沉淀剂 固溶体 |
| 收稿时间： | 2004-09-02 |
| 修稿时间： | 2004-09-02 |
The capability of CeO2-ZrO2 rare earth complex oxides influenced by different precipitators |
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| YAN Zhong-jun,WANG Jing-gang,WEN Ming-fen,CHEN Jing,GU Yong-wan.The capability of CeO2-ZrO2 rare earth complex oxides influenced by different precipitators[J].Journal of Beijing University of Chemical Technology,2005,32(3):9-12. |
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| Authors: | YAN Zhong-jun WANG Jing-gang WEN Ming-fen CHEN Jing GU Yong-wan |
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| Institution: | 1. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029; 2. Institute of Nuclear Energy Technology, Tsinghua University, Beijing 102201, China; 3. Kunming Sino-Platinum Metals Catalyst Limited Corporation, Yunnan Kunming 650101, China |
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| Abstract: | CeO_2-ZrO_2 rare earth complex oxides doped by transitional metals were prepared by the impregnation method through adopting different precipitators. The samples were characterized by XRD, BET and H_2-TPR. The results show that the samples prepared with (NH_4)_2CO_3 as a precipitator can easily form a solid solution with high surface areas, favorable reductive capacity at low temperature and high oxygen storage capacity. But the samples will sinter after high temperature treatment and its stability at high temperature should be enhanced in the future. |
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| Keywords: | CeO2-ZrO2 rare earth complex oxides precipitator solid solution |
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