Silica sol gel as salt bridge - Powered by XMB 1.9.11
Silica sol gel as salt bridge - Powered by XMB 1.9.11
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Subject: Silica sol gel as salt bridge
Silica sol gel as salt bridge
In the production of silica aerogels the first step is to produce a sol gel, a gel made of silica whos pores are filled with whatever solvent it was made in. I bet that this would make the perfect salt bridge, stable and chemically inert for various electrochemical processes. I won't be able to try this for a long time, but thought I'd post it anyway.
Anyone got some of this stuff? It probably wouldn't work for sodium hydroxide production, though, because sodium silicate would be formed.
If you have or can make tetramethyl orthosilicate, or the ethyl version it should be easy to make.
Edit: Also if you have silicon tetrachloride then you can make tmos by alcoholysis.
[Edited on 14-7- by Diablo]
Blame me if I am wrong but a SALT bridge contain ions what can move in it while the electrolysis goes.
But! When making a silica gel (sol-gel process), then this gel will contain mainly alcohol, some water and a lot of amorphous silica.
As far I remember pure water and even alcohol conducts electricity really bad.
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After the gel is produced one would exchange it into water with a dissolved electrolyte multiple time to remove the alcoholand add mobile ions.
In my other thread, I'm playing with boehmite (al oxide hydroxide) gels... would these be suitable for your intended application?
Since it is pretty inert it would probably be suitable as a salt bridge in most applications such as making sodium hydroxide from NaCl, but if making sulfuric acid from a sulfate I would be worried that some of it would dissolve.
Edit: Also alumina sol gels seem quite easy to prepare http://www.aerogel.org/?p=
[Edited on 16-7- by Diablo]
I have tried to make silica gels from teos on a number of occasions and while the chemistry and prep are quite straight forward I found that the gels normally (sorry always) collapse on drying. I think you would need a supercritical dryer I you wanted form the stable porous gel. Prior to drying they have they are like a really weak jelly and any attempts to move wreck them. Swede, I have also just started working on boehmite sols and have a few small successes with them. I have been able to make a freestanding porous boehmite film and on monday I will be calcinating it to try for a porous alumina film. I'll post a description and results on your tread when I get my camera charged.
The supercritical drying process produces aerogels.
In the production of silica aerogels the first step is to produce a sol gel, a gel made of silica whos pores are filled with whatever solvent it was made in. I bet that this would make the perfect salt bridge, stable and chemically inert for various electrochemical processes. I won't be able to try this for a long time, but thought I'd post it anyway.
If you want to learn more, please visit our website Hebei Silicon Research Electronic Materials Co., L.
Anyone got some of this stuff? It probably wouldn't work for sodium hydroxide production, though, because sodium silicate would be formed.
Elements Collected:52/87
Latest Acquired: Cl
Next in Line: Nd
If you have or can make tetramethyl orthosilicate, or the ethyl version it should be easy to make.
Edit: Also if you have silicon tetrachloride then you can make tmos by alcoholysis.
[Edited on 14-7- by Diablo]
Blame me if I am wrong but a SALT bridge contain ions what can move in it while the electrolysis goes.
But! When making a silica gel (sol-gel process), then this gel will contain mainly alcohol, some water and a lot of amorphous silica.
As far I remember pure water and even alcohol conducts electricity really bad.
-Pictures from chemistry, check it out(:
"You can't become a chemist and expect to live forever."
I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/ -Pictures from chemistry, check it out(:"You can't become a chemist and expect to live forever."
Additional reading:Luxurious Ultra Wide Neck Silicone Baby Bottle - Black
4 Tips to Select the Perfect Rotating Shaft DB Seal
How to Choose the Right Rotating Shaft DB Seal?
For more silica solinformation, please contact us. We will provide professional answers.
After the gel is produced one would exchange it into water with a dissolved electrolyte multiple time to remove the alcoholand add mobile ions.
In my other thread, I'm playing with boehmite (al oxide hydroxide) gels... would these be suitable for your intended application?
Since it is pretty inert it would probably be suitable as a salt bridge in most applications such as making sodium hydroxide from NaCl, but if making sulfuric acid from a sulfate I would be worried that some of it would dissolve.
Edit: Also alumina sol gels seem quite easy to prepare http://www.aerogel.org/?p=
[Edited on 16-7- by Diablo]
I have tried to make silica gels from teos on a number of occasions and while the chemistry and prep are quite straight forward I found that the gels normally (sorry always) collapse on drying. I think you would need a supercritical dryer I you wanted form the stable porous gel. Prior to drying they have they are like a really weak jelly and any attempts to move wreck them. Swede, I have also just started working on boehmite sols and have a few small successes with them. I have been able to make a freestanding porous boehmite film and on monday I will be calcinating it to try for a porous alumina film. I'll post a description and results on your tread when I get my camera charged.
The supercritical drying process produces aerogels.
For more information, please visit hydrophilic silica.