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Author: Subject: Calcinated oxides "reactivation"
Mabus
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[*] posted on 19-3-2017 at 03:15
Calcinated oxides "reactivation"


As most people here know, majority of OTC oxides are calcinated which makes them very inert and practically useless as reagents. Now, I've seen some people claiming success with using either molten alkali or molten NaHSO4 to fuse the oxide into a more reactive mass, but the claims are scattered on the forum and there is no grand thread for these procedures. So I made this thread to ask people who have done this procedure to share their experience here or if they can post on the wiki to write about it on its article, as I think this is an important procedure that some of us might need at one point.

Link for the wiki article: http://www.sciencemadness.org/smwiki/index.php/Reactivation_...




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spankyetal
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[*] posted on 30-8-2017 at 20:31
oxides as catalyst supports for anhydrides


Quote: Originally posted by Mabus  
As most people here know, majority of OTC oxides are calcinated which makes them very inert and practically useless as reagents. Now, I've seen some people claiming success with using either molten alkali or molten NaHSO4 to fuse the oxide into a more reactive mass, but the claims are scattered on the forum and there is no grand thread for these procedures. So I made this thread to ask people who have done this procedure to share their experience here or if they can post on the wiki to write about it on its article, as I think this is an important procedure that some of us might need at one point.

there are incredible amounts of "green chemistry' catalysts being explored that run the gamut of usefulness.

From safer, more economic room temperature, solvent free reactions for large scale industrial uses to the lab synthesis of psychoactive substances.
I have been researching these compounds recently an am amazed at their potential. Their usefulness is exponential. read up on sulfated, calcined, salts of Barium or Zirconium oxides especially. The trick is in the calcination step changing the crytal latice from a monoclinic form to a tetragononal one. Thus increasing the surface area and acid or base strength a thousand fold of concentrated sulfuric acid. Yes a thousand fold increase of acidity. And at ROOM TEMPs.



Link for the wiki article: http://www.sciencemadness.org/smwiki/index.php/Reactivation_...
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