醇水均匀沉淀法制备纳米CeO2粉体工艺及机理研究
Process and Mechanism for Preparing Nano-sized CeO2 Powders by Homogeneous Precipitation Method in Alcohol-water Solvents
摘 要
在醇-水体系中以六亚甲基四胺(HMT)为缓释沉淀剂制备了纳米CeO2粉体,并用TEM和BET对其进行了表征,考察了制备过程中工艺参数对CeO2粉体颗粒大小及团聚的影响,并对影响机理进行了探讨.结果表明：在较佳工艺条件下制备的纳米CeO2平均尺寸约为8nm,与传统的水溶液均匀沉淀法相比较,该方法得到的粉体粒径更小,且分散性好.
纳米CeO2
透光率
沉淀法
alcohol-water solution
nanometer CeO2
light transmission rate
precipitation method
Abstract
Nano-sized CeO2 powders were synthesized by homogeneous precipitation method in alcohol-water solution with hexamethylene tetramine (HMT) as precipitator.The nano-particles were characterized by TEM and BET.The process parameters which influenced the size and agglomeration of nanometer CeO2 powders were studied and the influence mechanism was discussed.The average size of the particles prepared by the above method was about 8nm.The particles had smaller size and better dispersion than those obtained from the ordinary powders synthesized by homogeneous precipitation in water solution.
中图分类号 TG146
所属栏目
基金项目 江苏省自然科学基金资助项目(BK2002010);江苏省高新技术项目(BG2004022)
收稿日期 2005/2/20
修改稿日期 2005/6/10
网络出版日期
作者单位点击查看
备注李霞章(1980-),男,湖北公安人,硕士研究生.
引用该论文: LI Xia-zhang,CHEN Zhi-gang,CHEN Jian-qing,CHEN Yang. Process and Mechanism for Preparing Nano-sized CeO2 Powders by Homogeneous Precipitation Method in Alcohol-water Solvents[J]. Materials for mechancial engineering, 2006, 30(3): 68～70
李霞章,陈志刚,陈建清,陈杨. 醇水均匀沉淀法制备纳米CeO2粉体工艺及机理研究[J]. 机械工程材料, 2006, 30(3): 68～70
被引情况:
【1】陈建清,陈志刚,李霞章,李伟, "工艺参数对醇水均匀沉淀法制备纳米CeO2颗粒粒径的影响",机械工程材料 31, 73-75(2007)
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参考文献
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【2】Moon Y T,Park H K,Kim D K,et al.Preparation of monodisperse and spherical zirconia powders by heating of alcohol aqueous salt solution[J].J Am Ceramic Soc,1995,78(10):2690-2694.
【3】Fang C S,Chen Y W.Preparation of titania particles by thermal hydrolysis of TiCl4 in n-propanol solution[J].Materials Chemistry and Physics,2003,78:739-745.
【4】陈建清.超细二氧化铈制备及其化学机械抛光机理研究[D].镇江:江苏大学,2004.
【5】Chen P L,Chen I W .Reactive cerium (Ⅳ) oxide powders by the homogeneous precipitation method[J].J Am Ceram Soc,1993,76(6):1577-1583.
【6】陈彩凤,陈志刚.超声场中湿法制备纳米粉末的原理和方法[J].机械工程材料,2003,27(4):30-32.
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【9】关春红,唐兆麟,王福会,等.TiAl金属间化合物在熔融碳酸盐中的热腐蚀行为[J].腐蚀科学与防护技术,2002,12(3):134-137.
【10】李远士,牛焱,吴维詜.金属材料的高温氯化腐蚀[J].腐蚀科学与防护技术,2000,12(1):41-44.
【11】Zahs A,Spiegel M,Grabke H J.The influence of alloy elements on the chlorine-induced high temperature corrosion of Fe-Cr alloys in oxidizing atmospheres[J].Materials and Corrosion,1999,50:561-578.
【12】Spiegel M,Biedenkopf P,Grabke.Corrosion of iron base alloys and high alloy steels in the Li2CO3-K2CO3 eutectic mixture[J].Corrosion Science,1997,39:1193-1210.
【13】Chauvaut V,Cassir M,Denos Y.Behavior of titanium species in molten Li2CO3-Na2CO3 and Li2CO3-K2CO3 under anodic and catholic conditions.Ⅰ-thermodynamic predictions at 550~750℃[J].Electroimica Acta,2003,23(14-15):1991-2002.
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