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Topic: Silica encapsulation  (Read 3833 times)

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kiddhill20

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Silica encapsulation
« 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

Offline eugenedakin

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Re:Silica encapsulation
« Reply #1 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.
There are 10 kinds of people in this world: Those who understand binary, and those that do not.

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