symboom
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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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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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Eclectic
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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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ScienceSquirrel
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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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jokull
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Hope you all find it useful.
Attachment: phph3hsgd (212kB)
This file has been downloaded 758 times
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