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Doy, N (2010)
Languages: English
Types: Doctoral thesis
Data for the physical properties of Room Temperature Ionic Liquids (RTILs) as a function of chemical composition is limited due to the expense and difficulty of producing large volumes of pure samples for characterization. RTILs comprise solely of ions and are liquid at room temperature. These are becoming of increasing interest for an extensive range of applications. This thesis looks at developing small scale characterization processes to find low cost and efficient methods for processing smaller sample volumes. Quartz crystal impedance analysis has been used to assess whether room temperature ionic liquids behave in a Newtonian manner to determine the values of their square root viscosity-density product using small volumes. Values are compared to traditional viscometer and densitometer measurements. A range of harmonics were studied for a 5 MHz fundamental crystal. The frequency shift of the third harmonic was found to provide the closest agreement between the two measurement methods with a limit seen at a square root viscosity-density product value of approximately 18 kg m??2 s??0:5. Further characterisation of the liquid was performed to separate values of density and viscosity using dual Quartz Crystal Microbalance (QCM) with fabricated surface features on one QCM; this required a total sample volume of only 240 L. Values were corroborated with standard measurement techniques demonstrating good agreement. A QCM was then incorporated into a microfluidic glass chip system to measure the square root of the viscosity-density product of RTILs.
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    • [1] M. Earle and K. Seddon, “Ionic liquids. Green solvents for the future,” Pure and Aplied Chemistry, vol. 72, no. 7, pp. 1391-1398, 2000. Workshop on Sustainable Chemistry, Venice, Italy, Oct 15-17, 1998.
    • [2] C. Andrade and L. Alves, “Environmentally benign solvents in organic synthesis: Current topics,” Current Organic Chemistry, vol. 9, no. 2, pp. 195-218, 2005.
    • [3] R. Sheldon, “Catalytic reactions in ionic liquids,” Chemical Communications, no. 23, pp. 2399-2407, 2001.
    • [4] J. Dupont, R. de Souza, and P. Suarez, “Ionic liquid (molten salt) phase organometallic catalysis,” Chemical ReviewsDupont2002, vol. 102, no. 10, pp. 3667-3691, 2002.
    • [5] G. Cave, C. Raston, and J. Scott, “Recent advances in solventless organic reactions: towards benign synthesis with remarkable versatility,” Chemical Communications, no. 21, pp. 2159-2169, 2001.
    • [6] P. Chen, Y. Lin, and I. Sun, “Electrochemistry of gallium in the Lewis acidic aluminum chloride-1- methyl-3-ethylimidazolium chloride room-temperature molten salt,” Journal of the Electrochemical Society, vol. 146, no. 9, pp. 3290-3294, 1999.
    • [7] G. Wei, Z. Yang, and C. Chen, “Room temperature ionic liquid as a novel medium for liquid/liquid extraction of metal ions,” Analytica Chimica Acta, vol. 488, no. 2, pp. 183-192, 2003.
    • [8] H. Zhao, S. Xia, and P. Ma, “Use of ionic liquids as 'green' solvents for extractions,” Journal of Chemical Technology and Biotechnology, vol. 80, no. 10, pp. 1089-1096, 2005.
    • [9] C. Bowlas, D. Bruce, and K. Seddon, “Liquid-crystalline ionic liquids,” Chemical Communications, no. 14, pp. 1625-1626, 1996.
    • [10] D. Abdallah, A. Robertson, H. Hsu, and R. Weiss, “Smectic liquid-crystalline phases of quaternary group VA (especially phosphonium) salts with three equivalent long n-alkyl chains. How do layered assemblies form in liquid-crystalline and crystalline phases?,” Journal of the American Chemical Society, vol. 122, no. 13, pp. 3053-3062, 2000.
    • [11] A. Bradley, C. Hardacre, J. Holbrey, S. Johnston, S. McMath, and M. Nieuwenhuyzen, “Small-angle X-ray scattering studies of liquid crystalline 1-alkyl-3-methylimidazolium salts,” Chemistry of Materials, vol. 14, no. 2, pp. 629-635, 2002.
    • [12] W. Qin, H. Wei, and S. Li, “1,3-dialkylimidazolium-based room-temperature ionic liquids as background electrolyte and coating material in aqueous capillary electrophoresis,” Journal of Chromatography A, vol. 985, no. 1-2, pp. 447-454, 2003. 25th International Symposium on Capillary Chromatography, Riva Del Garda, Italy, May 13-17, 2002. J. D. Holbrey. “Industrial applications of ionic liquids,” Chim.
    • Oggi, vol. 22, pp. 35-37, 2004. S. J. Martin, G. C. Frye & K. O. Wessendorf. “Sensing liquid properties with thickness-shear mode resonators,” Sensors and Actuators A-Physical, vol. 44, pp. 209-218, 1994.
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