以氟碳铈矿焙砂盐酸二步浸取的氯化铈溶液为原料,用碳酸氢铵作沉淀剂.沉淀经过滤、洗涤、烘干、焙烧及研磨制得用于抛光的CeO2.讨论了加料方式、氯化铈浓度、分散剂用量及焙烧温度对CeO2粒径大小及分布的影响.结果表明在含15g/L聚乙二醇1000的饱和碳酸氢铵溶液中滴加0.2mol/L氯化铈,500℃下焙烧,得到平均粒径为1.15μm,粒径分布窄的CeO2粉体.利用X衍射测定CeO2晶体结构,证明所得到的CeO2属于立方晶系,其空间点群为O5H-FM3M.
参考文献
| [1] | Jiang M.;Komanduri R. .On the finishing of Si3N4 balls for bearing applications[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,1998(1/2):267-278. |
| [2] | 池汝安;王淀佐.稀土选矿与提取技术[M].北京:科学出版社,1996:118-134. |
| [3] | 关武城.稀土抛光粉的物化性能与抛光能力之间的关系[J].稀土,1981(01):46. |
| [4] | 高濂;陈锦元 .醇盐水解法制备二氧化钛纳米粉体[J].无机材料学报,1995,10(04):423-427. |
| [5] | 董相廷 等.聚乙二醇凝胶法制备CeO2纳米晶[J].长春光学精密机械学院学报,1999,22(04):1-4. |
| [6] | Ming-Shyong Tsai .Powder synthesis of nano grade cerium oxide via homogenous precipitation and its polishing performance[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2004(2):132-134. |
| [7] | Briois V et al.Formation of solid particles by hydrolysis of cerium(Ⅳ) suphate[J].Journal of Materials Science,1993,28:5019-5024. |
| [8] | 董相廷,闫景辉,于薇.水热晶化法制备CeO2纳米晶[J].稀有金属材料与工程,2002(04):312-314. |
| [9] | Terribile D.;Llorca J.;de Leitenburg C.;Dolcetti G.;Trovarelli A. .The synthesis and characterization of mesoporous high-surface area ceria prepared using a hybrid organic/inorganic route[J].Journal of Catalysis,1998(1):299-308. |
| [10] | Nachimuthu P.;Liu RS.;Jang LY.;Chen JM.;Shih WC. .The study of nanocrystalline cerium oxide by X-ray absorption spectroscopy[J].International Journal of Quantum Chemistry,2000(2):408-413. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%