Please use this identifier to cite or link to this item: http://hdl.handle.net/10321/876
DC FieldValueLanguage
dc.contributor.advisorDeenadayalu, Nirmala-
dc.contributor.authorSingh, Sangeeta-
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,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-002640
dc.description.levelMen_US
item.languageiso639-1other-
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Theses and dissertations (Applied Sciences)
Files in This Item:
File Description SizeFormat
Singh_2013_1.pdf2.53 MBAdobe PDFThumbnail
View/Open
Show simple item record

Page view(s) 50

811
checked on Feb 19, 2020

Download(s) 20

1,058
checked on Feb 19, 2020

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.