Article (Scientific journals)
On the phase behaviour of oxetane-CO2 and propargylic alcohols-CO2 binary mixtures by in situ infrared micro-spectrometry
Zaky, Mohamed; Boyaval, Amélie; Grignard, Bruno et al.
2017In Journal of Supercritical Fluids, 128, p. 308-313
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Keywords :
supercritical carbon dioxide
Abstract :
[en] The phase behaviour of carbon dioxide/propargylic alcohols and carbon dioxide/oxetanes mixtures has been investigated using in-situ FTIR microspectrometry that allows us determining the evolution of the concentration of each component in the liquid phase as a function of temperature and pressure. It was at the same time possible to look inside the cell and to visualize the expansion of the liquid phase during the increase of the pressure. The measurements were performed at three different temperatures (40, 70 and 100◦C) for pressures ranging between 0.1 and 15 MPa. Propargylic alcohol (PA), 2-methyl-3-butyn-2-ol (MBOL), 3-butyn-1-ol (BOL) and trimethylene oxide (TMO) were selected as these molecules are used in the synthesis of cyclic or polycarbonates by coupling with CO2. Thus, we determined the CO2 sorption and the concentration of the substrate in the liquid phase. Thanks to these measurements, we established the pressure-composition phase diagram for the liquid phase of these substrate/CO2 binary mixtures.
Research center :
Center for Education and Research on Macromolecules (CERM)
CESAM Complex and Entangled Systems from Atoms to Materials (CESAM)
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Zaky, Mohamed;  University of Bordeaux, Institute of Molecular Sciences, France
Boyaval, Amélie ;  University of Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Grignard, Bruno ;  Université de Liège > Département de chimie (sciences) > Centre d'études et de rech. sur les macromolécules (CERM)
Méreau, Raphaël;  University of Bordeaux, Institute of Molecular Sciences, France
Detrembleur, Christophe ;  University of Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Jérôme, Christine  ;  University of Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM), Center for Education and Research on Macromolecules (CERM)
Tassaing, Thierry;  University of Bordeaux, Institute of Molecular Sciences, France
Language :
English
Title :
On the phase behaviour of oxetane-CO2 and propargylic alcohols-CO2 binary mixtures by in situ infrared micro-spectrometry
Publication date :
October 2017
Journal title :
Journal of Supercritical Fluids
ISSN :
0896-8446
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
128
Pages :
308-313
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
"CO2Green" and "Flycoat" programs
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BELSPO - Politique scientifique fédérale [BE]
Walloon region [BE]
Région Nouvelle-Aquitaine [FR]
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