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Author: Subject: zinc-iron double oxide catalyst
symboom
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sad.gif posted on 6-4-2011 at 18:50
zinc-iron double oxide catalyst


does anyone know how a zinc-iron double oxide catalyst is made i am only thing i can think of is oxidizing galvanized metal.any suggestions would be appreciated
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ScienceSquirrel
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[*] posted on 7-4-2011 at 02:45


It will depend on the catalyst to be made but generally you will soak something like pumice granules in a solution of iron and zinc sulphate.
The granules are then soaked in sodium carbonate to precipitate the metal carbonates.
The granules are then washed to remove excess salts and then heated to drive off water and carbon dioxide and form the catalyst.
Heterogenous catalysts are notoriously finicky and you really need a recipe; make it one way and it will work, make it another way and all you will have is shit! :(

[Edited on 7-4-2011 by ScienceSquirrel]
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[*] posted on 7-4-2011 at 04:58


I made some by coprecipitating from solution of the sulfate salts and calcining the washed precipitate in oven set to autoclean, but IDK yet if I have good catalyst activity for making alkyl carbonates from alcohols and urea.
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[*] posted on 7-4-2011 at 05:14


Really we want to have a look at this paper.
They detail the preparation of the catalyst and the reaction conditions.

http://cat.inist.fr/?aModele=afficheN&cpsidt=17742621
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[*] posted on 7-4-2011 at 06:43


Quote: Originally posted by ScienceSquirrel  
Really we want to have a look at this paper.
They detail the preparation of the catalyst and the reaction conditions.

http://cat.inist.fr/?aModele=afficheN&cpsidt=17742621



Hope you all find it useful.

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