Equation Carman-Haul

Self-diffusion coefficients were calculated by Carman-Haul equations (16-18). Examples of the percentage attainment of equilibrium with root time plots (Wt/Wa vs. /t) and of the dimensionless time plots (r vs. t) are shown in Figures 1 and 2, respectively. Further calculation (17, 18)... 

For CPA the geometries of both a cylinder and slab were analyzed. At given experimental conditions, Carman-Haul equations predict substantially different curves for the assumption of slab and cylinder geometries. The fact that both equations gave values of D0, EA, AS, and AG in close agreement (Table II) showed that the values obtained for the dimensions of the enzyme crystals (Table I) were reasonable. Of the two geometries, the cylinder is probably the more reliable since the diffu-... 

Figure 2. r vs. t plots constructed from solutions to the Carman-Haul equation cylinder)... 

White and Dyer [23] examined its utility for the estimation of exchange diffusivitics in clinoptilolite and concluded it to be convenient and reliable in comparison to the equation of Carman and Haul [24] used in other zeolite studies [25], or to that of Boyd et al. [25],... 

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See also in sourсe #XX -- [ ]

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