摘要
详细描述了正硅酸乙酯的水解缩聚反应过程,简要介绍了影响反应过程的相关因素;综述了气凝胶和有序介孔SiO2材料这两种以该反应为基础的、具有代表性的多孔SiO2粉体的制备,特别是对多孔SiO2微球的制备进行了比较。指出以正硅酸乙酯的水解缩聚反应为基本过程制得的SiO2粉体中无序排列的孔是普遍存在的,如在反应过程中引入模板剂或采用其它手段,无序排列的孔可变为有序的。
The hydrolysis and condensation reactions of tertraethyl orthosilicate （TEOS） were illustrated in detail.Some factors influencing the reactions were briefly introduced.The preparations of two representatives of porous silica powders based on the hydrolysis and condensation of TEOS, aerogel and ordered mesoporous silica, were reviewed in the second section. Comparisons among the syntheses of porous silica spheres were made. Finally, it was pointed out that the disordered pores were naturally formed in the powders synthesized by the hydrolysis and condensation of TEOS. If the templates or other means were included in the reaction process, the disorder pores might be ordered.
出处
《中国粉体技术》
CAS
2006年第3期35-39,共5页
China Powder Science and Technology
基金
国家自然科学基金资助项目
编号:10474049。
关键词
正硅酸乙酯
水解缩聚
多孔SiO2粉体
微球
tetraethy orthosilicate
hydrolysis and condensation
porous silica powders
microsphere
