In situ visualization of transformation of organic matter in water at high pressures and temperatures Journal Article uri icon

DCO ID 11121/2600-2247-6022-1734-CC

in language

  • eng

year of publication

  • 2006


  • Water of high pressure and temperature is attracting attention for its unique properties and here an in situ observational technique has been developed to study organic matter transformations in H-P and -T (high-pressure and -temperature) water. Three samples of different kind involving aromatic organic compound, polymer, and natural biomass behave greatly different. Anthracene dissolves in water at the temperature of 325 degrees C and corresponding pressure of 315.9 MPa and remains stable till the highest temperature of 420 degrees C of this work. Polystyrene and rice straw hydrolyze in the form of heterogeneous phases in H-P and -T water. Polystyrene melts to form non-soluble liquid spherule before hydrolysis, whereas rice straw hydrolyzes directly from non-soluble solid. The light organic molecules produced from hydrolysis dissolve in water at high temperatures and separate out during cooling. The study is helpful to understand reaction mechanism and process of hydrolysis of biomass and polymer in H-P and -T water. (c) 2005 Elsevier B.V. All rights reserved.


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