摘要
用透射电镜对乙醇介质中氨催化下正硅酸乙酯（ＴＥＯＳ）水解制各单分散二氧化硅微粒过程中颗粒的生长过程进行了跟踪，通过对ＴＥＯＳ的水解速率与成核及颗粒生长速率间关系的研究，发现水解是整个反应的控制步骤，影响水解的因素也同样影响成核及颗粒的生长。
The growth process of monodisperse silica particles from the hydrolysis oftetraethyl orthosilicate in the ethanol by ammonia as catalyst was followed by transmitelectron microscop(TEM).By investigating the relationship of hydrolysis of tetraethylorthosilicate with nucleation and growth rate of monodisperse silica particles,it was foundthat hydrolysis is the rate-limiting step of reaction.The factors promoting the hydrolysisalso promote the nucleation and growth of monodisperse particles.
出处
《石油大学学报（自然科学版）》
CSCD
1995年第5期89-92,共4页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家自然科学基金
关键词
二氧化硅
正硅酸乙酯
水解
动力学
Silica
Particles
Tetraethyl orthosilicate
Hydrolysis
Kinetics
