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Do people do supercritical drying with water?
The critical temperature and pressure of water - about 375 C and 3500 PSI - don't really seem that high. Some silica aerogels apparently handle temperatures that are much higher than that, and typical oxygen bottles are at 2500 PSI so it seems like it should be possible to make aerogel with water as the drying gel solvent.
The critical temperature and pressure of water - about 375 C and 3500 PSI - don't really seem that high. Some silica aerogels apparently handle temperatures that are much higher than that, and typical oxygen bottles are at 2500 PSI so it seems like it should be possible to make aerogel with water as the drying gel solvent.