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Título:
Melting Point Depression Effect with CO2 in High Melting Temperature Cellulose Dissolving Ionic Liquid
Autor/es:
JOANA M LOPES; FRANCISCO ADRIÁN SÁNCHEZ; SABRINA BELÉN RODRIGUEZ REARTES; MARÍA DOLORES BERMEJO; ÁNGEL MARTÍN; MARÍA JOSÉ COCERO
Lugar:
Alicante
Reunión:
Congreso; X IBEROAMERICAN CONFERENCE ON PHASE EQUILIBRIA AND FLUID PROPERTIES FOR PROCESS DESIGN; 2015
Institución organizadora:
Chemical Enginnering Department. University of Alicante (Spain)
Resumen:
Ionic liquids based on quaternary ammonium present melting point depressions higher than 100K under 15 MPa of CO2 [3]. Imidazolium and pyridinium cations showed a much lower depression in the range of 20K in the same conditions [4].In this work, the melting temperatures of five different ionic liquids (ILs) able to dissolve cellulose were measured in contact with CO2 using a high-pressure visual cell, up to 10 MPa, using the method of the first melting point. The ionic liquids studied are 1-butyl-3-methylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride, 1-allyl-3-methylimidazolium, chloride, 1-(2-hydroxyethyl)-3-methylimidazolium chloride and dihydrogen phosphate. The data were modelled with the GC EoS developed by Skjold-Jørgensen. To do so parameters for the methyl imidazolium chloride group were adjusted using data available in literature.[5]
