Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Binary Mutual Diffusion Coefficients of Aqueous Solutions of a-Cyclodextrin at Temperatures from 298.15 to 312.15 K

Ribeiro, A. C. F.[Ana C. F.], Leaist, D. G.[Derek G.], Esteso, M. A.[Miguel A.], Lobo, V. M. M.[Victor M. M.], Valente, A. J. M.[Artur J. M.], Santos, C. I. A. V.[Cecilia I. A. V.], Cabral, A. M. T. D. P. V.[Ana M. T. D. P. V.], Veiga, F. J. B.[Francisco J. B.]
J. Chem. Eng. Data 2006, 51, 4, 1368-1371
ABSTRACT
Binary mutual diffusion coefficients (interdiffusion coeffcients) have been measured for aqueous solutions of a-cyclodextrin (a-CD) at concentrations from (0.002 to 0.008) mol*dm-3. The effect of temperature, from (298.15 to 312.15) K, was also analyzed. The concentration dependence of D is discussed on the basis of Hartley s equation. The activation energy for the diffusion process, 18719 J*mol-1, was calculated from data of D at different temperatures. This activation energy is in good agreement with that estimated using Stokes-Einstein equation (18644 J*mol-1). Activity coefficients for aqueous a-CD solutions were also estimated from Hartley equation and experimental D.
Compounds
# Formula Name
1 C12H22O11 D-sucrose
2 ClK potassium chloride
3 H2O water
4 C42H70O35 .beta.-cyclodextrin
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • 3
  • Binary diffusion coefficient, m2/s ; Liquid
  • Amount concentration (molarity), mol/dm3 - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 1
  • Taylor dispersion method
  • 1
  • POMD
  • 2
  • 3
  • Binary diffusion coefficient, m2/s ; Liquid
  • Amount concentration (molarity), mol/dm3 - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Crystal - 2
  • Taylor dispersion method
  • 1
  • POMD
  • 4
  • 3
  • Binary diffusion coefficient, m2/s ; Liquid
  • Temperature, K; Liquid
  • Amount concentration (molarity), mol/dm3 - 4; Liquid
  • Liquid
  • Crystal - 4
  • Taylor dispersion method
  • 16