| 储氧材料制备过程中的结构及织构变化 |
| Study the Structure and Texture of Storage Oxygen Material Process |
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| 摘要: |
| 关键词: 共沉淀 Ce0.65Zr0.35O2氧化物 同晶转化 织构 结构 |
| 基金项目: |
| Abstract: Ce0.65Zr0.35O2 solid solution was prepared by co-precipitation method and characterized by X-ray diffraction (XRD), Raman spectra, BET, oxygen storage capacity (OSC) and temperature-programmed reduction measurements (H2-TPR) after calcination at 100 ℃, 300 ℃, 600 ℃, and 1 000 ℃. The results showed that the precipitation was a crystalline of fluorite structure, and in the process of the precipitation transformation into Ce0.65Zr0.35O2 solid solution, the fluorite structure of the precipitation kept unchanged. The samples had different BET surface areas and OSC at different temperatures, but they held the performance of stable structure. After 1 000 ℃, there didn′t appear the other crystalline phase. So the samples prepared by co-precipitation method had excellent texture and higher thermal stability. |
| Keywords: co-precipitation Ce0.65Zr0.35O2 oxides the same crystalline shift texture structure |
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| 赵明,郭家秀,刘萍,房华,蔡黎,毛小波,龚茂初,陈耀强.储氧材料制备过程中的结构及织构变化[J].无机化学学报,2006,22(6):1123-1126. |
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