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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dagostino, Carmine
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2017Hole theory as a prediction tool for Brownian diffusive motion in binary mixtures of liquidscitations
- 2017Swelling-induced structural changes and microparticle uptake of gelatin gels probed by NMR and CLSMcitations
- 2016Adsorption of pyridine from aqueous solutions by polymeric adsorbents MN 200 and MN 500. Part 2: Kinetics and diffusion analysiscitations
- 2015A local composition model for the prediction of mutual diffusion coefficients in binary liquid mixtures from tracer diffusion coefficientscitations
- 2013Prediction of the mutual diffusivity in acetone-chloroform liquid mixtures from the tracer diffusion coefficientscitations
- 2011Prediction of binary diffusion coefficients in non-ideal mixtures from NMR data: Hexane-nitrobenzene near its consolute pointcitations
- 2011Molecular motion and ion diffusion in choline chloride based deep eutectic solvents studied by H-1 pulsed field gradient NMR spectroscopycitations
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article
Prediction of binary diffusion coefficients in non-ideal mixtures from NMR data: Hexane-nitrobenzene near its consolute point
Abstract
Pulsed field gradient nuclear magnetic resonance was used to measure the tracer diffusivity of the species in mixtures of nitrobenzene and n-hexane close to the consolute point. Measurements are reported over the full range of composition at 21 °C (the consolute temperature is 19.4 °C), and at several compositions including the consolute composition (x1=0.422) over the range 21–35 °C. These NMR-derived tracer diffusivities are compared with literature values for the binary diffusion coefficient under the same conditions. It is shown that it is possible to calculate the binary diffusion coefficient, even very close to the consolute point, from the NMR-derived tracer diffusivities using a fairly simple thermodynamic correction factor, of a form similar to those reported in the literature based on critical point scaling laws. The necessary thermodynamic parameters are calculated by fitting vapour–liquid equilibrium data for the system under the same conditions, which is available in the literature. The ability to predict binary diffusion coefficients from NMR measurements has significant potential, for example in studying mass transport in porous solids or packed beds, situations where conventional diffusion measurements are impossible to make.