Preparation of Nanometer Magnesia with Homogeneous Precipitation
[1]QIAO Mei-ying,CHEN Ke-ke.Preparation of Nanometer Magnesia with Homogeneous Precipitation[J].Journal of Zhengzhou University (Engineering Science),2013,34(04):99-102.[doi:10.3969/j.issn.1671-6833.2013.04.023]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 04
Page number:
99-102
Column:
Public date:
2013-09-09
- Title:
- Preparation of Nanometer Magnesia with Homogeneous Precipitation
- CLC:
- TQ132.2
- Abstract:
- Abstract: Using MgCl2·6H,0 and CO(NH2) , as raw materials，PVA as dispersing agent, we have first syn-thesized Mg( OH)2, precursor with a homogeneous precipitation method，and the nanometer sized magnesiumoxide ( nano-Mg0) with average size of 50 nm is obtained by calcinations of the precursor. The effects of reac-tion temperature，reaction time and reactant ratio on yield of Mg(OH)2, are investigated.The calcination tech-nology of nano-Mg0 is determined by the analysis of apparent specific volume. Morphological structure of thenano-Mg0 is analyzed by SEM. The optimized reaction parameters for synthesizing Mg( OH)2 , are : the reactiontemperature: 100 ℃ , the reaction time: 4 h，reactant molar ratio: ( CO(NH2), to MgCl2·6H,0)=6:1,best calcination temperature : 500 ℃ and calcination time : 1.5 h.
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Last Update:
1900-01-01