For synthesis of sLDH nanoparticles, we want to use a protocol in which the particles are synthesized under 100 degrees hydrothermal temperature for 4 to 8 hours. Some of the precursors include Mg(NO3)2, Al(NO3)3 and NaOH.
Current protocol prescribes the use of a Teflon-lined autoclave for heat treatment. Would it be possible to use a normal vertical autoclave with the standard 250mL laboratory bottles?
Under normal procedures, the cap is left with a bit of space, but from experience, we know that closing the cap of these smaller bottles is not a problem when autoclaving.
I have two additional questions to this:
-When using a teflon lined autoclave in an oven: will the temperature inside the autoclave be much higher than the oven temperature due to the increase in pressure?
-Can a teflon lined autoclave be placed in a "normal" autoclave?
I have found that closing the cap of a glass bottle inside the autoclave, will not allow for high-pressure inside the autoclave. Pressure will not be transferred to the inner environment of the bottle, only temperature. Therefore this method will not provide good conditions for the synthesis. Opening the cap will not allow for good reflux conditions.
For the second question, if we can place a teflon-lined autoclave inside a normal autoclave, I suppose the answer is yes, reasoned with the same logic as above. However, I would like to see some agreement to this, as I can also see the enormous potential for disaster.
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