Coelho, JoseNaydenova, Greta P.Miloshev, Stoyan M.Novakov, Christo P.Petrova, Pavlina P.Yankov, Dragomir S.Stateva, Roumiana P.2016-04-222016-04-222015-03COELHO, José A. P.; [et al.] - Solubilities of C‑Tetraalkylcalix[4]resorcinarenes in SCCO2: experimental measurements, characterization, and correlation. Journal of Chemical & Engineering Data. ISSN 0021-9568. Vol. 60, N.º 3 (2015), pp. 909-918.0021-9568http://hdl.handle.net/10400.21/6080The solubilities of two C-tetraalkylcalix[4]resorcinarenes, namely C-tetramethylcalix[4]resorcinarene and C-tetrapentylcalix[4]resorcinarene, in supercritical carbon dioxide (SCCO2) were measured in a flow-type apparatus at a temperature range from (313.2 to 333.2) K and at pressures from (12.0 to 35.0) MPa. The C-tetraalkylcalix[4]resorcinarenes were synthesized applying our optimized procedure and fully characterized by means of gel permeation chromatography, infrared and nuclear magnetic resonance spectroscopy. The solubilities of the C-tetraalkylcalix[4]resorcinarenes in SCCO2 were determined by analysis of the extracts obtained by HPLC with ultraviolet (UV) detection methodology adapted by our team. Four semiempirical density-based models, and the SoaveRedlichKwong cubic equation of state (SRK CEoS) with classical mixing rules, were applied to correlate the solubility of the calix[4]resorcinarenes in the SC CO2. The physical properties required for the modeling were estimated and reported.engSupercritical carbon-dioxideSolidsCO2ResorcinarenesDerivativesCavitandsLiquidsjournal article10.1021/je500990f