学术
碳酸氢铵沉淀法制备大颗粒稀土氧化物的研究
李梅[1,2] 柳召刚[2] 胡艳宏[2] 王觅堂[2] 王丽[2] 励杭泉[1]
[1]北京化工大学材料科学与工程学院,北京100029 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014010
摘 要:
用碳酸氢铵作沉淀剂制备大颗粒CeO2，研究了晶种和添加剂对CeO2产品的粒度和松装密度的影响，适量加入晶种和添加剂可以促进CeO2颗粒的长大。在特定的工艺条件下，用碳酸氢铵作沉淀剂制备出了体积中心粒径D50为24～30／μm、松装密度为1．9g·cm^-3的大颗粒CeO2产品。该工艺操作简单，设备投资少，易于推广，适合于工业化生产。[著者文摘]
文章出处:
《稀有金属》-2007年31卷5期 -717-720页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
0258-7076（2007）05-0717-04
Preparation of Large Particle Rare Earths Oxide by Precipitation with NH4HCO3
Li Mei, Liu Zhaogang, Hu Yanhong, Wang Mitang, Wang Li, Li Hangquan （ School of Materials Science and Engineering, Beijing University of Chemical Engineering, Beijing 100029, China ; School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Bnotou 014010, China ）
Abstract:
The large particulate CeO2 was prepared using NH4HCO3 as precipitation agent. The effect of inoculating crystal and additive on particle size and bulk density of CeO2 was studied. Under certain condition, volume center diameter D50 = 24 - 30 μm, bulk density 1.9 g·cm^-3 of CeO2 were obtained. This tecnology had advantages of simple process, less equipment in investment, easy to expand for use and suitable for industrialization produce[著者文摘]
Key words:
cerium oxide ; big particle; NH4CO3 ; bulk density
基金资助:
国家基础研究项目（2004CCA03900）,国家自然科学基金项目（20566001）资助
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