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Related Experiment Videos

Supercritical water as a solvent.

Hermann Weingärtner1, Ernst Ulrich Franck2

  • 1Physikalische Chemie II, Ruhr-Universität Bochum, 44780 Bochum, Germany, Fax: (+49) 234-321-4293.

Angewandte Chemie (International Ed. in English)
|April 14, 2005
PubMed
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Supercritical water, existing above 647 K, exhibits tunable properties due to density changes. This state enables innovative technologies by altering water

Area of Science:

  • Physical Chemistry
  • Materials Science
  • Chemical Engineering

Background:

  • Water's unique properties extend beyond moderate conditions.
  • Supercritical water exists at temperatures above 647 K.
  • Its properties are tunable with pressure and temperature.

Purpose of the Study:

  • To review current knowledge on supercritical water properties.
  • To explore solutions of supercritical water with various compounds.
  • To understand the molecular processes involved.

Main Methods:

  • Literature review of supercritical water research.
  • Analysis of experimental data on supercritical water properties.
  • Theoretical modeling of molecular interactions.

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Main Results:

  • Supercritical water exhibits gas-like to liquid-like densities.
  • Extraordinary properties arise from tunable dense states.
  • Solutions with nonpolar, polar, and ionic compounds show unique behaviors.

Conclusions:

  • Supercritical water's tunable properties are key for innovative technologies.
  • Understanding molecular processes is crucial for applications.
  • Further research can unlock new technological potentials.