| 液相沉淀法制备稀土-锆固溶体及其性能研究 |
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| 引用本文： | 李维勇,赵月昌,陈曦,杨筱琼,张鹏,马新胜,高玮.液相沉淀法制备稀土-锆固溶体及其性能研究[J].中国稀土学报,2010,28(2). |
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| 作者姓名： | 李维勇 赵月昌 陈曦 杨筱琼 张鹏 马新胜 高玮 |
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| 作者单位： | 1. 华东理工大学化工学院,国家超细粉末工程研究中心,上海,200237
2. 上海华明高纳稀土新材料股份有限公司,上海,201613 |
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| 摘 要： | 采用液相沉淀法制备了Ce0.6Zr0.3La0.05Y0.05O2固溶体。通过BET,XRD,SEM,程序升温还原和氧脉冲吸附等方法对合成产品性能进行了表征。研究了前驱体的形态、高温水热处理、表面处理以及后期固溶体的还原处理对固溶体性能的影响。其中前驱体的高温水热处理和固溶体的还原处理对固溶体的催化性能有很大的影响。200℃水热处理制得的固溶体经1000℃老化4 h后,比表面积为25.3 m2.g-1,孔容为0.21 cm3.g-1,经800℃还原处理3 h后储氧量为478.3μmol.g-1,显示了较高的比表面积和储氧能力的高温稳定性。
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| 关 键 词： | 稀土-锆固溶体 织构 高温稳定性 储氧能力 |
Synthesis of Rare Earth-Zirconium Solid Solution by Liquid Phase Precipitation and Properties |
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| Li Weiyong,Zhao Yuechang,Chen Xi,Yang Xiaoqiong,Zhang Peng,Ma Xinsheng,Gao Wei.Synthesis of Rare Earth-Zirconium Solid Solution by Liquid Phase Precipitation and Properties[J].Journal of the Chinese Rare Earth Society,2010,28(2). |
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| Authors: | Li Weiyong Zhao Yuechang Chen Xi Yang Xiaoqiong Zhang Peng Ma Xinsheng Gao Wei |
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| Institution: | Li Weiyong1,Zhao Yuechang2,Chen Xi2,Yang Xiaoqiong2,Zhang Peng2,Ma Xinsheng1,Gao Wei2(1.The State Engineering Research Center of Ultrafine Powder,School of Chemical Engineering,East China University of Science , Technology,Shanghai 200237,China,2.Shanghai Huaming Gaona Rare Earth New Materials Co.Ltd,Shanghai 201613,China) |
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| Abstract: | Cerium-zirconium solid solution Ce0.6Zr0.3La0.05Y0.05O2 was prepared by precipitation.The products were characterized by BET,XRD,SEM,TPR and oxygen pulse adsorption.The effects of high temperature hydrothermal treatment,surface treatment of the hydroxide precursor,and reduction treatment of solid solution on properties of solid solution were investigated.The high temperature hydrothermal treatment of the hydroxide precursor and reduction treatment of solid solution had great influences on redox property of ... |
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| Keywords: | rare earth-zirconium solid solution textural properties thermal stability oxygen storage capacity |
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