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Diffusion Coefficients for the Binary System Glycerol + Water at 25 °C. A Velocity Correlation Study

2004; American Chemical Society; Volume: 49; Issue: 6 Linguagem: Inglês

10.1021/je049917u

1520-5134

Gerardino D’Errico, Ornella Ortona, Fabio Capuano, Vincenzo Vitagliano,

Phase Equilibria and Thermodynamics

Diffusion coefficients for the binary system glycerol + water have been studied at 25 °C. Accurate mutual diffusion coefficients have been measured by the Taylor dispersion and Gouy interferometric techniques. Intradiffusion coefficients of both components have been measured by the pulsed gradient spin−echo−Fourier transform NMR technique. The collected diffusion coefficients have been combined with data of water excess chemical potential present in the literature to calculate the velocity correlation coefficients. The results have been interpreted in terms of molecular interactions.