| 郑育英,黄慧民,李军,邓爱华.固-固化学法制备Ce0.75Zr0．25O2氧化物固溶体及其表征[J].分子催化,2008,(3): |
| 固-固化学法制备Ce0.75Zr0．25O2氧化物固溶体及其表征 |
| Preparation and Its Characterization of Nanometer Ce0.75Zr0.25O2 by olid-solid State Chemical Reaction |
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| DOI： |
| 中文关键词: Ce0.75Zr0.25O2,固溶体,固相化学反应,机械力 |
| 英文关键词:Ce0.75Zr0.25O2,Solid solution,Solid state chemical reaction,Mechanical power |
| 基金项目:广东省自然科学基金
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广东省工业科技攻关项目 |
| 郑育英 黄慧民 李军 邓爱华 |
| 广东工业大学轻工化工学院 广东广州510006 |
| 摘要点击次数: 1133 |
| 全文下载次数: 3115 |
| 中文摘要: |
| 以碳酸铈、氯氧锆和草酸为原料,采用机械力活化固-固化学法制得前驱物,前驱物经热分解获得了相应的目标产物Ce0.75Zr0.25O2氧化物固溶体.对前驱体进行了热重-差热(TG-DTA)测试,分析了在球磨及煅烧过程中可能发生的化学反应.采用X-射线衍射(XRD),透射电镜(TEM)和光电子能谱(XPS)等对产物进行了表征,实验结果表明:产物为单一的立方晶系固溶体,没有单独的氧化锆或氧化铈存在,粉体分散性好,呈圆球状,分布均匀,平均粒径为15.8 nm,比表面积达85.4 m2/g.对机械力活化固相化学反应的机制进行了研究. |
| 英文摘要: |
| Nanometer Ce0.75Zr0.25O2 solid solution was obtained by thermal decomposition of the precursor,which was prepared by solid-solid chemical reaction method with Ce2(CO)3,ZrOCl2 8H2O and H2C2O4 2H2O as raw materials under the action of mechanical power.The mechanism of reactions in the ball milling was researched.Through TG-DTA investigation of the precursor,the possibly chemical reactions during the synthesis process were determined.The characterizations of Nanometer Ce0.75Zr0.25O2 solid solution by XRD,TEM,XPS and BET showed that it was single-cubic-phase,its particles were spherical shape with the average particles size 15.8 nm,and the specific surface area was 85.4 m2/g. |
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