Preparation of nanoparticles of magnesium hydroxide from bittern
Mg(OH)2 nano-particles with fiber-like morphology were prepared by chemical precipitation process,with the bittern from Qinghai Salt Lakes used as Mg2+ raw material and ammonia water as precipitator.The influence of aging procedure on the Mg(OH)2 crystal was investigated by TEM and crystalline size calculation.The Mg(OH)2 nano-particles were characterized by XRD,SEM,TEM and TG-DTA methods.The results indicate that the Mg(OH)2 nano-particles with perfect crystal are obtained after aging procedure above 50 ℃,and the grain size increases with increasing aging temperature and prolonging aging time.Mg(OH)2 particles with fiber-like morphology,20.60 nm in diameter and 300.500 nm in length are observed,Mg(OH)2 will decompose into MgO at temperature range 347.623 ℃.
magnesium hydroxide nano-particles chemical precipitation bittern
XU Bao-qiang DENG Hua DAI Yong-nian YANG Bin
National Engineering Laboratory for Vacuum Metallurgy,Kunming University of Science and Technology,K Yunnan Nationality University,Kunming 650031,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）