| 초록 |
Tetraethyl orthosilicate (TEOS) is a very important precusor for making SiO2 material which is used in various applications such as bio-, nano-, and coating industries. Traditionally, TEOS is commercially obtained from silicon metal through four-step processes such as the synthesis of SiCl4 using HCl, its alkoxylation evolving HCl as a byproduct and neutralization to form a salt, filteration, and distillation. To overcome such drawbacks, we studied the direct synthesis of TEOS from the reaction of silicon metal with ethanol in the presence of diethylene glycol metal salt catalyst. This direct synthesis for making TEOS is simple and easy for batch and continueous processes. In this presentation, I will discuss the high-performance synthetic method of tetraethoxysilane from silicon metal in details. |
