Please use this identifier to cite or link to this item: https://hdl.handle.net/10321/876
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dc.contributor.advisorDeenadayalu, Nirmala-
dc.contributor.authorSingh, Sangeetaen_US
dc.date.accessioned2013-07-30T07:14:04Z-
dc.date.available2014-02-11T12:32:58Z-
dc.date.issued2013-07-30-
dc.identifier.other447425-
dc.identifier.urihttp://hdl.handle.net/10321/876-
dc.descriptionSubmitted in fulfilment of the academic requirements for the Masters Degree in Technology: Chemistry, Durban University of Technology, Durban, South Africa, 2013.en_US
dc.description.abstractThe thermodynamic properties of binary liquid mixtures using an ionic liquid (IL) with alcohols were determined at different temperatures. The ionic liquid used was 1-butyl-3- methylimidazolium methylsulphate [BMIM]+[MeSO4]-. Densities, speed of sound, and refractive indices for the binary mixtures ([BMIM]+[MeSO4]- + methanol, or 1-propanol, or 2-propanol, or 1-butanol) were experimentally measured over the whole range of composition at T = (298.15, E 303.15, 308.15, and 313.15) K. From the experimental data, excess molar volumes, V m , E , deviations in refractive isentropic compressibilities, κ s , excess isentropic compressibilities, κ S indices, ∆n, and molar refractions, R, were calculated. The excess partial molar volumes were also calculated at T = 298.15 K. For the binary systems, ([BMIM]+[MeSO4]- + methanol, or 1-propanol, or 2-propanol, or E E E 1-butanol) V m and κ S are always negative and V m decrease slightly when the temperature increases. The refractive index deviation at T = (298.15, 303.15, 308.15, and 313.15) K is positive over the whole composition range. The measured negative values for excess molar volume of these mixtures ([BMIM]+[MeSO4]- + methanol, or 1-propanol, or 2-propanol, or 1-butanol) indicate strong ion-dipole interactions and packing between alcohols and IL are present. The Redlich-Kister smoothing polynomial equation was satisfactorily applied for the E E fitting of the V m , κ S , and ∆n data to give the fitting parameters and the root-mean-square deviations. The Lorentz-Lorenz (L-L) equation was also used to correlate the volumetric property and predict the density or refractive index of the binary mixtures of ionic liquid and the organic solvents. The Lorentz-Lorenz approximation gives a higher σ when used to correlate the iiiexcess molar volumes for the mixtures ([BMIM]+[MeSO4]- + methanol, or 1-propanol, or 2-propanol, or 1-butanol). The L-L equation gives good results for the prediction of density and refractive index. The results are discussed in terms of solute-solute, solute-solvent and solvent- solvent interactions.en_US
dc.description.sponsorshipNational Research Foundationen_US
dc.format.extent161 pen_US
dc.language.isoenen_US
dc.subject.lcshIonic solutionsen_US
dc.subject.lcshAlcoholsen_US
dc.subject.lcshChemistry, Physical and theoreticalen_US
dc.titleCorrelation and prediction of the physical and excess properties of the ionic liquid 1-butyl-3-methylimidazolium methyl sulphate with several alcohols at T= (298.15 to 313.15) Ken_US
dc.typeThesisen_US
dc.dut-rims.pubnumDUT-002640en_US
dc.description.levelMen_US
dc.identifier.doihttps://doi.org/10.51415/10321/876-
local.sdgSDG03-
item.languageiso639-1en-
item.openairetypeThesis-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Theses and dissertations (Applied Sciences)
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