文献类型：期刊文献

英文题名：Synthesis and characterization of magnesium hydroxide by batch reaction crystallization

作者：Song, Xingfu[1]; Sun, Shuying[1]; Zhang, Dengke[1]; Wang, Jin[1]; Yu, Jianguo[1]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2011

起止页码：1

外文期刊名：Frontiers of Chemical Science and Engineering

收录：EI(收录号：IP51669996)

语种：英文

外文关键词：Chemical analysis - Crystallization - Flame retardants - Magnesium - Particle size - Particle size analysis - Precipitation (chemical) - Scanning electron microscopy - Size distribution - Sodium - Sodium chloride - Water content - Water filtration - X ray diffraction

摘要：Magnesium hydroxide with high purity and uniform particle size distribution was synthesized by the direct precipitation method using MgCl2 and NaOH as reactive materials and NaCl as additive to improve the crystallization behavior of the product. The particle size distribution, crystal phase, morphology, and surface area of magnesium hydroxide were characterized by Malvern laser particle size analyzer, X-ray diffraction (XRD), scanning electron microscope (SEM) and Branauer-Emmett-Teller (BET) method, respectively. The purity of products was analyzed by the chemical method. The effects of synthesis conditions on the particle size distribution and water content (filtration cake) of magnesium hydroxide were investigated. The results indicated that feeding mode and rate, and reaction temperature had important effects on water content and the particle size distribution of the product, and sodium chloride improved the crystallization behavior of magnesium hydroxide. The ball-like magnesium hydroxides with the particle size distribution of 6.0-30.0 μm and purity higher than 99.0% were obtained. This simple and mild synthesis method was promising to be scaled up for the industrial production of magnesium hydroxide. ? 2011 Higher Education Press and Springer-Verlag Berlin Heidelberg.