Related Experiment Video
Updated: Jun 10, 2026

Measurement of the Rheology of Crude Oil in Equilibrium with CO2 at Reservoir Conditions
Published on: June 6, 2017
Influence of supercritical CO(2) pressurization on the phase behavior of mixed cholesteryl esters
Zhen Huang1, Mei Feng, Junfeng Su
1Tianjin Key Laboratory of Refrigeration Technology, Department of Packaging Engineering, Tianjin University of Commerce, Tianjin 300134, China. huang900@yahoo.com
Abstract:
Evidences indicating the presence of phase transformations in the mixed cholesteryl benzoate (CBE) and cholesteryl butyrate (CBU) under the supercritical CO(2) pressurization, by means of differential scanning calorimetry (DSC) and X-ray diffraction (XRD), are presented in this work. These include (1) the DSC heating curve of pure CBU; (2) the DSC heating curves of CBU/CBE mixtures; (3) the XRD spectra of pure CBU; (4) the XRD spectra of CBU/CBE mixtures; (5) CBU and CBE are miscible in either solid phase or liquid phase over the whole composition range. As a result of the presence of these phase transformations induced by pressurization, it could be deduced that a solid solution of the CBU/CBE mixture might have formed at the interfaces under supercritical conditions, subsequently influencing their dissolving behaviors in supercritical CO(2).
Related Concept Videos
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
Phase Diagrams
Synthesis of Phosphatidylcholine in the ER Membrane
The major components of all eukaryotic cell...
Phase Diagram
Colloidal precipitates
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

