화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.47, No.6, 1351-1354, 2002
Infinite dilution diffusion coefficients of linalool and benzene in supercritical carbon dioxide
In this work tracer diffusion coefficients of linalool in supercritical carbon dioxide were measured at 313.15, 323.15, and 333.15 K and pressures from (12-20) MPa using the chromatographic peak broadening technique. Linalool was chosen because it is one of the most important components of the flavor and fragrance of the citrus essential oil. The influence of pressure, temperature, and carbon dioxide density on the diffusion coefficients is examined, as well as the hydrodynamic behavior. The applicability of the following models is evaluated: Wilke-Chang, Hayduk-Minhas, He-Yu-Su, Catchpole-Ydng, Dymond, and Liu-Silva-Macedo. Tracer diffusion coefficients of benzene were also measured and compared with literature values in order to survey the apparatus and procedure performance.