Abstract
A setup for the measurement of temperature-dependent diffusion coefficients has been developed based on 1D Raman spectroscopy. The presented setup was used to measure binary diffusion coefficients for mixtures of monoethanolamine + water, cyclohexane + toluene, and methanol + toluene for temperatures between T = 298.15 and 330.15 K. The experimental diffusion coefficients agree well with available literature data. For the mixture methanol + toluene, literature data was only found for T = 298.15 K. The novel setup was therefore used to determine temperature-dependent diffusion coefficients of methanol + toluene up to T = 328.15 K. The experimental data are also compared to a temperature correlation for diffusion coefficients in concentrated solutions. While the correlation describes the temperature dependence well for simple systems, measurement techniques remain indispensable for diffusion in complex mixtures. © 2013 Springer Science+Business Media New York. Show more
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publishedExternal links
Journal / series
Journal of solution chemistryVolume
Pages / Article No.
Publisher
SpringerSubject
Interdiffusion; 1D Raman spectroscopy; Diffusion in liquids; Temperature-dependent diffusion; In situ diffusion measurementOrganisational unit
09696 - Bardow, André / Bardow, André
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