Process that generates a liquid from a solid or a gas
This article is about the physical process. For the end of a secret, see Liquidation.
In materials science, liquefaction[1] is a process that generates a liquid from a solid or a gas[2] or that generates a non-liquid phase which behaves in accordance with fluid dynamics.[3]
It occurs both naturally and artificially. As an example of the latter, a "major commercial application of liquefaction is the liquefaction of air to allow separation of the constituents, such as oxygen, nitrogen, and the noble gases."[4] Another is the conversion of solid coal into a liquid form usable as a substitute for liquid fuels.[5]
^Some authors contend that there is a distinction between liquefaction and liquification (which is more commonly considered a misspelling), with the latter term applying only to processes involving heat. Knox, Ray; Stewart, David (1995). "3. Recognizing Seismic Landforms". The New Madrid Fault Finders Guide. Marble Hill, MO: Gutenberg-Richter Publications. p. 36. ISBN 978-0-934426-42-8. LCCN 91-91374.
^"Pharmaceutical Processes: Processes of Liquefaction". The Pharmaceutical Era. No. 21. 20 April 1899. p. 503. [by] a process of liquefaction is meant any process the effect of which is to cause a solid or gaseous body to assume or pass into the liquid state.
^Pickett, Joseph P., ed. (2005). "Liquefaction". The American Heritage Science Dictionary. Boston, MA: Houghton Mifflin Company. p. 363. ISBN 978-0-618-45504-1. LCCN 2004019696.
^Mavrikis, Peter; Horobin, Wendy, eds. (2003). "Liquefaction". How It Works: Science and Technology. Vol. 20 (3rd ed.). Tarrytown, NY: Marshall Cavendish. p. 64. ISBN 0-7614-7314-9. LCCN 2001028771.
^Speight, James G. (2013). The Chemistry and Technology of Coal. Chemical Industries. Vol. 132 (3rd ed.). Boca Raton, FL: CRC Press. pp. 545–607. ISBN 9781138199224.
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necessarily imply periodic behavior, though it can serve as a good indicator. Liquefaction due to a strong earthquake is of particular concern because many highly...
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