Aerogels
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Aerogels. Recipe Features Additional Information. Recipe. Ingredients Precondensed silica (Silbond H-5, TEOS, or equivalent) Catalyst (ethanol, water, aqueous ammonia or protic acid) Process Place material into autoclave filled with ethanol

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Aerogels

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Aerogels

Aerogels

  • Recipe

  • Features

  • Additional

    Information


Recipe

Recipe

  • Ingredients

    • Precondensed silica (Silbond H-5, TEOS, or equivalent)

    • Catalyst (ethanol, water, aqueous ammonia or protic acid)

  • Process

    • Place material into autoclave filled with ethanol

    • Pressurize at 750-850 psi with CO2 & Temperature at 5-10 (C)

    • Use liquid CO2 to remove the ethanol

    • Adjust pressure and temperature to critical points of CO2

    • Using drying process, finished product takes 12 hours to 6 days


Features

Features

  • Large internal surface area

    • 400-1000 m3/g

  • Mechanically strong

    • Support over 1500x own weight

  • Transparent / Optical clarity

  • Good heat/sound insulator

  • Extremely low density

    • 0.003 g/cm3


Additional information

Additional Information

  • Cost

  • Disadvantage

  • Types of Aerogels


Reference

Reference

  • eande.lbl.gov/ECS/aerogels/satoc.htm

  • www.mkt-intl.com/aerogels/

  • www.mrw.interscience.wiley.com/ueic/articles/


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