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Topic: Heating under inert atmosphere  (Read 579 times)

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Offline Corribus

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Heating under inert atmosphere
« on: February 13, 2019, 02:51:32 PM »
I need to heat a solid sample under fairly inert atmosphere for several days at about 80 °C. Anyone have any brilliant ideas about how I might do that? The sample is too large to fit through the neck of a standard glass flask. I do not have ready access to a Schlenk line, glove box, or anything of the sort, but I'm willing to go look for someone who does if I know what to ask for.
What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

Offline hypervalent_iodine

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Re: Heating under inert atmosphere
« Reply #1 on: February 13, 2019, 10:13:39 PM »
I think your best bet is a glove box if you can find access to one.

Offline Corribus

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Re: Heating under inert atmosphere
« Reply #2 on: February 13, 2019, 10:32:56 PM »
Can you get an oven in a glove box?
What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

Offline DrCMS

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Re: Heating under inert atmosphere
« Reply #3 on: February 14, 2019, 11:22:09 AM »
Do you have access to a glass or plastic screw top jar that the sample will fit in? 

If so:
  • oven dry the jar
  • cool it with a flow of dry inert gas into the top
  • add sample still with a slow flow of gas into the top
  • screw on lid
  • put in an oven at 80°C

It might even work with a ziplok plastic bag?

Offline Corribus

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Re: Heating under inert atmosphere
« Reply #4 on: February 15, 2019, 12:48:11 PM »
Something like this is kind of what I was thinking. I've tried something similar before for a related experiment and had mixed results, I guess because displacing the air isn't that efficient.

I thought about the problem some more and think another option is to use our vacuum oven. Since vacuum is, in a way, an inert "atmosphere", and I have no solvent to worry about, so it may be easier than trying to displace the air with an inert gas.

Thanks for the ideas!
What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?  - Richard P. Feynman

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