THE EFFECT OF CONCENTRATION ON THE LIQUID-PHASE DIFFUSIVITIES IN THE BINARY-SYSTEMS CARBON-DIOXIDE OLEIC-ACID, CARBON-DIOXIDE METHYL MYRISTATE AND CARBON-DIOXIDE METHYL PALMITATE AT HIGH-PRESSURES

Liquid phase diffusion coefficients of the binary systems carbon dioxi de-oleic acid (cis-9-octadecenoic acid), carbon dioxidemethyl myristat e (n-tetradecanoic acid methyl ester) and carbon dioxide-methyl palmit ate (n-hexadecanoic acid methyl ester) were measured by a capillary te chnique at pressures between 70 and 130 bar and al 40, 50 and 60 degre es C. Diffusivities at infinite dilution and in the saturated liquid p hase were obtained from counterdiffusion mass flow rates. The concentr ation dependence of the diffusion coefficient was determined from the effect of composition on the liquid phase viscosity. Numerical results are given in full detail.