文献类型：期刊文献

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

作者：Xingfu SONG[1];Shuying SUN[1];Dengke ZHANG[1];Jin WANG[1];Jianguo YU[1]

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

年份：2011

卷号：5

期号：4

起止页码：416

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；PubMed;

基金：supported by the Shanghai Natural Science Foundation(No.09ZR147900);the Program for New Century Excellent Talents in University(NCET-08-0776).

语种：英文

中文关键词：magnesium hydroxide;direct precipitation method;industrial crystallization;particle size distribution

摘要：Magnesium hydroxide with high purity and uniform particle size distribution was synthesized by the direct precipitation method using MgCl_(2) 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(?ltration 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 magne-sium hydroxides with the particle size distribution of 6.0–30.0μm 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.