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《China Powder Science and Technology》 2006-06
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Preparation of Magnesium Oxide Nano-particles by Surface Modification Drying

WANG Bao-he1,ZHANG Wei1,2,ZHANG Wen-bo1,3,FAN Fang-rong1(1.School of Chemical Engineering ,Dalian University of Technology ,Dalian 116012;2.College of Life Science,Dalian Nationalities University,Dalian 116600;3.The 47th Institute of Fourth Academy of CASC,Xi'an,710025,China)  
Magnesium hydroxide precipitate was prepared by homogenous precipitation method,using MgCl2·H2O and CO(NH2)2 as raw materials.Before it was calcined to produce magnesium oxide nano-particles,the precipitate was dried to remove its solvent by different methods of surface modification drying.All samples were characterized by X-ray diffraction and transmission electron microscope to investigate the effects of drying methods on the morphology and particle size of nano-scale magnesia.Principle of surface modification drying and action of modifiers were discussed.The results indicate that magnesium oxide nano-particles obtained by different surface modification drying processes are with almost same particle diameters of 20 nm to 30 nm and a great difference in agglomeration state.
【CateGory Index】: O614.22
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