{HEAD ~ Methods} of more rapidly producing {TAIL ~ aerogel products} by means of a rapid solvent exchange of solvent inside wet gels with supercritical CO2 by injecting supercritical, rather than liquid, CO2 into an extractor that has been pre heated and pre pressurized to substantially supercritical conditions or above 
{ HEAD ~ Methods } of more rapidly producing { TAIL ~ aerogel products } by means of a rapid solvent exchange of solvent inside wet gels with supercritical CO2 by injecting supercritical , rather than liquid , CO2 into an extractor that has been pre heated and pre pressurized to substantially supercritical conditions or above
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