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CO 2 Technology Platform: An Important Tool for Environmental Problem Solving
Author(s) -
Wells Sharon L.,
DeSimone Joseph
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010202)40:3<518::aid-anie518>3.0.co;2-4
Subject(s) - computer science , environmental science
CO 2 is a good solvent for many substances when compressed into its liquid or supercritical fluid state. Above the critical temperature and critical pressure ( T c =31 °C, P c =73.8 bar, see Figure 1 for the phase diagram for CO 2 ), CO 2 has both gaslike viscosities and liquidlike densities. These moderate critical conditions allow CO 2 to be used within safe commercial and laboratory operating conditions. Small changes in temperature and pressure cause dramatic changes in the density, viscosity, and dielectric properties of CO 2 , making it a tunable solvent that can be tailored for various applications. Combined, these unique properties make CO 2 a “solvent of choice” for the new millennium.