Effect of a Fluorinated Sodium Bis(2-ethylhexyl) Sulfosuccinate (Aerosol-OT, AOT) Analogue Surfactant on the Interfacial Tension of CO2 + Water and CO2 + Ni-Plating Solution in Near- and Supercritical CO2
Park, J. -Y.[Ji-Young], Lim, J. S.[Jong Sung], Yoon, C. H.[Chul Hoon], Lee, C. H.[Chang Ha], Park, K. P.[Kwon Pil]
The effect of a fluorinated sodium bis(2-ethylhexyl) sulfosuccinate (aerosol-OT, AOT) analogue surfactant (sodium salt of bis(2,2,3,3,4,4,5,5-octafluoro-1-pentanol) sulfosuccinate) on the interfacial layer of supercritical CO2 + water and supercritical CO2 + Ni-plating solution systems was investigated by measuring via the capillary rise method. These interfacial tensions were measured in the pressure range of (0.1 to 20.0) MPa at multiple temperatures for each of five interfaces: (1) CO2 + water system at (293.15, 298.15, 311.15, and 344.15) K; (2) CO2 + Ni-plating solution system at (313.15, 328.15, and 344.15) K; (3) CO2 + Ni-plating solution + F-AOT surfactant (0.1 and 0.3 mass %) system at (313.15, 328.15, and 344.15) K; (4) CO2 + Ni-plating solution + ethanol (10 and 20 vol %) system at 328.15 K; and (5) CO2 + Ni-plating solution + F-AOT surfactant (0.1 mass %) + ethanol (10 vol %) system at (313.15, 328.15, and 344.15) K. The reliability of the apparatus was confirmed by comparing the experimental data with literature data for the CO2 + water system at (311.15 and 344.15) K. The individual addition of the F-AOT surfactant and ethanol reduced the interfacial tension for the CO2 + Ni-plating solution system; however, the simultaneous addition of these two substances caused the opposite effect on the interfacial tension.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
H2O
water
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.