大粒径纳米二氧化硅的制备技术  

Preparation of Nanon Silicon Dioxide of Large Particle Size

作　　者：许念强[1] 顾建祥[1] 罗康[1] 郑松保[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《化工进展》2004年第7期747-750,共4页Chemical Industry and Engineering Progress

基　　金：中科院知识创新工程所级开发项目资助课题

摘　　要：介绍了一种制备大粒径、高浓度硅溶胶的工艺方法 ,研究了硅溶胶生产中影响纳米二氧化硅粒径的增长因素。结果表明 ,纳米二氧化硅粒径的平均大小、粒度分布受 pH值、温度、杂质离子浓度等诸多因素的影响 。This study provides a method for the preparation of high concentration silica sol of large particle size. The growth factors of the grain diameter of nanon silicon dioxide particle in preparation of silica sol were investigated. It was showed that the average diameter and distribution of nanon silicon dioxide particle were affected by some conditions, including pH value, temperature and salt concentration. And it is crucial to control said conditions in optimization for the uniform growth of the grain diameter of silicon dioxide particle.

关 键 词：硅溶胶 纳米二氧化硅 大粒径 制备 

分 类 号：TQ127.2[化学工程—无机化工]