Hello all, I have just registered because someone has written a letter to me and he has a few questions he would like me to ask since he doesn't have access to the internet himself. Lucky for him I am a very helpful person and thus I'm writing this now. Here goes:
He is thinking of making some Na-GHB by reacting GBL with sodium carbonate but he has some questions.
The thing is he has an induction cooktop. This means that the cooktop can only be used to heat iron pots as induction (magnetism (some magnetic fields shifting? not sure how it actually works)) only works on certain metals. This is a problem since an alkali is used in the GBL-Na2CO3 reaction which will degrade the metal in the pot.
The good thing about induction is that it doesn't heat the cooktop, only the pot on the cooktop. So the controlling of the pot's temperature is very precise. For example if water is boiling in a pot on the stove and you turn it off it only takes <1 second for it to stop boiling.
Basically he would like to hear from someone who has tried making reactions with such a cooktop or if anyone has some ideas as to how it can be done.
you should be able to put an iron plate under the flask/beaker and have it get hot... an iron pot full of aluminium beads would be a good one, would keep an rbf stable even
i wonder what implications there would be in reactions using iron salts of some sort on an induction element... that would be interesting.
incidentally iron heats up in microwaves too, in fact it can be used as a heating surface for such things as casting lead and pewter, silicon carbide is another material which heats in MW.
Alkali will not degrade stainless steel very easily and vitreous enamel steel pots are readily available.
I saw an aluminum pressure cooker the other day that had a sandwich layered bottom with steel in the middle so that it would work on an induction range.
Induction units work at RF and basically the pot becomes both the secondary and load of a transformer and heats because the high frequency causes eddy currents.