XeonTheMGPony - 17-6-2019 at 16:04
https://www.ebay.ca/itm/Difantool-Molecular-Sieve-Zeolite-3A...
Ordered two hundred grams, arrived in good condition quality packaged.
Messaged about regen temp, promptly responded with operating temp and regen temp.
Thought I'd share.
Abromination - 17-6-2019 at 21:57
Good to know, when I get the chance I will try these.
Thanks for sharing!
XeonTheMGPony - 18-6-2019 at 07:24
Regen temp: 180c to 500c, recommended 350c
Operating: 0c - 38c recommended 8c-12c
Fore these particular ones.
Going to vacuum dry in a 500ml flask and monitor via thermal couple, via claisen adapter and vacuum take off fitting. Monitor end point via vacuum
micron gauge.
Ubya - 18-6-2019 at 15:03
oh lucky me then, i won last week an auction for 500g of sieves from this seller for $8,59, if you say they are good quality i'm even happier
XeonTheMGPony - 18-6-2019 at 17:38
Well the packaging certainly is good quality, hermetical sealed Mylar bags with a resealable strip in them. Very vague on instructions though, so I
had to contact them, for the 3A variant the specs are up top.
XeonTheMGPony - 23-6-2019 at 05:37
Figured I'd show the alcohol I use and the steps to purify it
this is the type, they use Ethyl Acetate as the denaturent and that's it, in low concentrations too.
![Alcohol source.jpg - 256kB](https://www.sciencemadness.org/whisper/files.php?pid=615878&aid=76026)
So Step one (No pics sorry) Reflux over Sodium Hydroxide for a few hours, then distill, this is what you're left with:
![Purifying Alcohol 1.jpg - 231kB](https://www.sciencemadness.org/whisper/files.php?pid=615878&aid=76028)
Then you repeat with fresh Hydroxide, you'll see the distillate tailings is much cleaner
![Second purifying run.jpg - 196kB](https://www.sciencemadness.org/whisper/files.php?pid=615878&aid=76030)
Distill again and then dry over Magnesium Sulfate, Anhydrous (Sorry forgot to take pics), then filter off to fresh dry flask.
![Purifying Alcohol 2.jpg - 177kB](https://www.sciencemadness.org/whisper/files.php?pid=615878&aid=76032)
Now for the part you where all expecting: Add your Molecular sieves and let stand till needed!
![Final drying 2.jpg - 178kB](https://www.sciencemadness.org/whisper/files.php?pid=615878&aid=76036)
To regenerate I will heat in a flask with a condenser attached to recover any ethanol that comes off, then once that stops will continue to heat under
vacuum to regen temp
[Edited on 23-6-2019 by XeonTheMGPony]