stöber process

How Does the Stöber Process Work?

The Stöber Process can be summarized in the following steps:
1. Hydrolysis: TEOS reacts with water in the presence of ammonia, leading to the formation of silicic acid and ethanol.
Si(OC2H5)4 + 4H2O → Si(OH)4 + 4C2H5OH
2. Condensation: The silicic acid molecules then condense to form siloxane bonds, leading to the formation of silica (SiO2) nanoparticles.
Si(OH)4 → SiO2 + 2H2O
3. Growth and Maturation: The particles grow in size by further condensation and aggregation until they reach the desired size.

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