Phase behavior of beta-D galactose pentaacetate-carbon dioxide binary system

Date

2006-01-31

Author

Dilek Hacıhabiboğlu, Çerağ
Gulari, Esin

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Phase behavior of beta-D galactose pentaacetate-carbon dioxide binary system is investigated by dew-point and bubble-point measurements conducted in a high pressure variable volume sapphire cell. The phase envelope for solutions of beta-D galactose pentaacetate in supercritical M is obtained for beta-D galactose pentaacetate concentrations between 2 and 26 wt%, and for the temperature range of 308-323 K. The system exhibits lower critical solution temperature (LCST) behavior and high solubility of beta-D galactose pentaacetate is observed. The densities of the system are also measured, and liquid-like densities (near 1 g/cm(3)) are observed for single-phase solutions of beta-D galactose pentaacetate in supercritical CO2 at concentrations of 18 wt% and higher. Viscosity is measured for solutions of 18 and 25 wt% beta-D galactose pentaacetate in the single-phase region at 313 K and 17 MPa and the viscosity values, 0.095 and 0.103 cp, respectively, are similar in magnitude to the viscosity of pure carbon dioxide.

Subject Keywords

Physical and Theoretical Chemistry, General Physics and Astronomy, General Chemical Engineering

URI

https://hdl.handle.net/11511/46328

Journal

FLUID PHASE EQUILIBRIA

DOI

https://doi.org/10.1016/j.fluid.2005.11.013

Collections

Department of Chemical Engineering, Article

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Citation Formats

Ç. Dilek Hacıhabiboğlu and E. Gulari, “Phase behavior of beta-D galactose pentaacetate-carbon dioxide binary system,” FLUID PHASE EQUILIBRIA, pp. 172–177, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46328.