NZniceguy - 22-1-2018 at 04:45
Could anyone please sell me 5 to 10 grams of copper chromite catalyst?
Also does anyone know if it can be reused after decarboxylating niacin?
zed - 25-1-2018 at 13:24
Well, one of the guys has a prep for Copper-Chromite, on u-tube.
Probably better to make it fresh, anyway.
Reused? Maybe.
https://www.youtube.com/watch?v=4L5AGGfxFBc
[Edited on 25-1-2018 by zed]
[Edited on 25-1-2018 by zed]
Assured Fish - 25-1-2018 at 20:52
I have just over 110g however it would take some serious convincing to get me to part with it.
![IMG_20180126_171510[1].jpg - 512kB](http://www.sciencemadness.org/talk/files.php?pid=504913&aid=64518)
I would suggest following zed's advice and make your own, its pretty straight forward.
However i would strongly advise that you do not use copper sulfate as your source of copper ions.
Copper sulfates poor solubility in water makes the displacement sluggish at best.
Copper nitrate is by far superior.
https://erowid.org/archive/rhodium/chemistry/copperchromite....
Hexavalent chromium in nz may be a bit of a nuisance, ebay has a broad range of supplies for the material and thats where i got mine, the only advise
here would be for you to get sodium dichromate instead of potassium dichromate, as for future experiments the solubility of the potassium salt makes
high dilutions an undesirable necessity.
unless you wanna make your own chromium salt, which would prove a good challenge.