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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: kiddhill20 on February 28, 2005, 12:00:54 PM

Title: Silica encapsulation
Post by: kiddhill20 on February 28, 2005, 12:00:54 PM

Hi,

Inorganic molecules can be coated with silica by a deposition process using water glass.

I know that silica is able to deposit onto surfaces that are hydrophilic, but is there another mechanism by which the silica does this?

Thanks

Title: Re:Silica encapsulation
Post by: eugenedakin on April 18, 2005, 10:39:36 AM

Hello Kiddhill20,

From practical experience, almost any acid will react with the sodium/potassium water glass to become deposited onto surfaces.  When neutralizing with organic acids, water glass can be deposited and encapsulate organic molecules.

I hope this helps,

Eugene Dakin Ph.D., P.Chem.