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Message Icon Topic: Ammonia Catalyst Post Reply Post New Topic
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Joined: 27 April 2008
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Quote encinoman Replybullet Topic: Ammonia Catalyst
    Posted: 27 April 2008 at 8:02pm
I am about to create some aerogels using an ammonia catalyst. I was wondering how crucial the ammonia concentration is. Since I am basically dehydrating the gel in the process, would I be able to use the more cheaper and available 10% concentration of ammonia over a higher 30% concentration? My idea is that since it is an aqueous solution of ammonia, it would just take a little more time to diffuse out the water.

Any ideas?
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Joined: 23 April 2008
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Quote esya Replybullet Posted: 29 April 2008 at 12:12pm
what is the function of ammonia in the sol gel process?
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Quote zeolite Replybullet Posted: 03 May 2008 at 9:04pm
I think the urea should be an alternative.
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Quote s_v_g Replybullet Posted: 06 May 2008 at 11:16am
ammonia is catalyst of sol-gel process, this is fact. I not to be sure in used of urea for catalysis of sol-gel process. 
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