表面活性剂对氢氧化镁制备的影响  

Effects of surfactants on preparation of magnesium hydroxide

作　　者：刘有智[1] 冯霞[1] 申红艳[1] 白俊红[1] 薛阿强[1] 

机构地区：[1]中北大学山西省超重力化工工程技术研究中心,山西太原030051

出　　处：《无机盐工业》2013年第7期28-30,共3页Inorganic Chemicals Industry

摘　　要：采用了六水氯化镁-氢氧化钠直接沉淀法制备纳米氢氧化镁。主要研究了硬脂酸、硬脂酸钠、钛酸丁酯和葡萄糖等作为表面活性剂,单独使用和复配使用对氢氧化镁沉降速率和过滤速率的影响。实验结果表明:在反应温度为60℃,搅拌时间为0.5 h,搅拌速度为200 r/min,在反应溶液中添加表面活性剂后,氢氧化镁沉降速率和过滤速率显著提高;适宜的表面活性剂为阴离子表面活性剂、复配表面活性剂。本实验为改善氢氧化镁的过滤和沉降性能提供了理论基础。Nanometer Mg（OH）2 was prepared by direct precipitation via MgCl2.6H2O-NaOH.The influences of single or compound surfactants,such as stearic acid,sodium stearate,butyl titanate,and glucose,on the sedimentation rate and filtration rate of Mg（OH）2were mainly studied.Experimental results indicate,under the conditions of reaction temperature of 60 ℃,the stirring time of 0.5 h,the stirring rate of 200 r/min,and in the presence of surfactant,sedimentation rate and filtration rate of Mg（OH）2 increased obviously.Appropriate surfactants are anion and compound surfactants.This study provides a theoretical foundation for improving the sedimentation and filtration performance of Mg（OH）2.

关 键 词：表面活性剂 氢氧化镁 过滤速率 沉降速率 

分 类 号：TQ132.2[化学工程—无机化工]