Fyndium - 24-9-2020 at 12:39
Has anyone any experience on these vessels for pressurized reactions?
https://www.ebay.com/itm/500ml-Hydrothermal-Autoclave-Vessel...
There are a couple of synthesis where a pressure of 2-10 bars would be needed, and this type of vessel would produce handy.
macckone - 24-9-2020 at 13:01
That is going to require the reaction temperature and pressure be appropriate for steam, but it will work.
It also seems a little high for the design.
You can probably have one custom made that will handle higher pressure for less.
Fyndium - 24-9-2020 at 13:11
I actually have 10 liter pot at hand that has been pressure proofed up to 10bar, but never had used it except for few pyrolysis distillations because
it lacks decent joints for attaching any glassware.
On the other hand, 10 liters is way too large for such reactions.
monolithic - 24-9-2020 at 14:25
It doesn't look like it has a pressure relief valve? I've always wanted to try a pressurized reaction but a vessel without a relief valve scares me.
Fyndium - 24-9-2020 at 23:03
Other, similar devices look like this:
https://www.ebay.com/itm/Hydrothermal-synthesis-Autoclave-Re...
Boffis - 25-9-2020 at 03:54
I actually have a small one of those reaction vessels and I am quite happy with mine. Mine is only 50 ml capacity which is a bit small, however, I
have not had any problems with it. It is important that you carefully tighten the lid as the seal is simply the compression of the PTFE inner lid
against the PTFE liner.
greenlight - 25-9-2020 at 10:40
Have you thought of just converting a fire extinguisher over as long as the reagents won't react with the inside?
I have a small fire extinguisher with the main stem cut down, a nozzle adapter so it can be compressed using an air tool fitting and a pressure gauge
instead of the original "pressure ok" indicator gauge so pressure can be monitored at all times.
I have tested it by pressurizing water and ethanol to 4 atm and then placing in an 80°C heating bath taking note of the pressure the whole time. It
works fine and considering that a fire extinguisher's normal operating pressure is about 19-20 atm you should be well within the safe operating
condition.