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Preparation of Nano Size Cerium Oxide from Cerium Carbonate  

Kim, Sung-Don (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Chul-Joo (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Yoon, Ho-Sung (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Resources Recycling / v.18, no.6, 2009 , pp. 24-29 More about this Journal
Abstract
Since cerium carbonate becomes porous cerium oxide by releasing carbon dioxide and vapour steam during calcination of cerium carbonate, nano size cerium oxide can be obtained by milling calcined cerium carbonate. Therefore cerium carbonate [$Ce_2(CO_3)3{\cdot}XH_2O$] is used generally for the preparation of nano size cerium oxide. In order to obtain nano size cerium oxide from cerium carbonate prepared by reactive crystallization of cerium chloride solution and ammonium bicarnonate solution, the effects of experimental variables in the milling and calcination of cerium carbonate, such as calcination temperature, milling time, rpm of planetary mill, amount of dispersant and ball size for milling on the size of cerium oxide was investigated in this study. Cerium oxide prepared with the conditions of calcination temperature of $700^{\circ}C$, milling time of 5 hour was 160nm mean particle size.
Keywords
cerium carbonate; cerium oxide; wet milling; calcination; dispersant;
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