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  2. Aerogel - Wikipedia

    en.wikipedia.org/wiki/Aerogel

    Aerogel contains particles that are 2–5 nm in diameter. After the process of creating aerogel, it will contain a large amount of hydroxyl groups on the surface. The hydroxyl groups can cause a strong reaction when the aerogel is placed in water, causing it to catastrophically dissolve in the water.

  3. Lifting gas - Wikipedia

    en.wikipedia.org/wiki/Lifting_gas

    While not a gas, it is possible to synthesize an ultralight aerogel with a density less than air, the lightest recorded so far reaching a density approximately 1/6th that of air. [13] Aerogels don't float in ambient conditions, however, because air fills the pores of an aerogel's microstructure, so the apparent density of the aerogel is the sum ...

  4. Chalcogel - Wikipedia

    en.wikipedia.org/wiki/Chalcogel

    The synthetic method can be extended to many thioanions, including tetrathiomolybdate-based chalcogels. [8] Different metal ions have been used as linkers Co 2+, Ni 2+, Pb 2+, Cd 2+, Bi 3+, Cr 3+. [8] [9] [10] When the gels are dried aerogels with high surface areas are obtained and the materials have multifunctional nature.

  5. SEAgel - Wikipedia

    en.wikipedia.org/wiki/SEAgel

    [2] Initially, SEAgel starts out as a gelatin-like mixture of agar and water. After it is freeze-dried to remove the water, it is left as a honeycomb of dried agar filled with air, with cell sizes two to three micrometers (2-3 μm) in diameter. SEAgel can have many different uses.

  6. Aerographene - Wikipedia

    en.wikipedia.org/wiki/Aerographene

    Aerographene or graphene aerogel is the least dense solid known to exist, at 160 g/m 3 (0.0100 lb/cu ft; 0.16 mg/cm 3; 4.3 oz/cu yd). [1] The material reportedly can be produced at the scale of cubic meters.

  7. Boron nitride aerogel - Wikipedia

    en.wikipedia.org/wiki/Boron_nitride_aerogel

    Boron nitride aerogel is an aerogel made of highly porous boron nitride (BN). It typically consists of a mixture of deformed boron nitride nanotubes and nanosheets . It can have a density as low as 0.6 mg/cm 3 and a specific surface area as high as 1050 m 2 /g, and therefore has potential applications as an absorbent , catalyst support and gas ...

  8. Supercritical drying - Wikipedia

    en.wikipedia.org/wiki/Supercritical_drying

    Fluids which do see industrial application of supercritical drying include carbon dioxide (critical point 304.25 K at 7.39 MPa or 31.1 °C at 1072 psi) and freon (≈300 K at 3.5–4 MPa or 25–0 °C at 500–600 psi). Nitrous oxide has similar physical behavior to carbon dioxide, but is a powerful oxidizer in its supercritical state.

  9. Dry measure - Wikipedia

    en.wikipedia.org/wiki/Dry_measure

    Dry measures are units of volume to measure bulk commodities that are not fluids and that were typically shipped and sold in standardized containers such as barrels.They have largely been replaced by the units used for measuring volumes in the metric system and liquid volumes in the imperial system but are still used for some commodities in the US customary system.