Binary Diffusion Coefficients of Arachidonic Acid Ethyl Esthers, cis-5,8,11,14,17-Eicosapentaenoic Acid Ethyl Esthers, and cis-4,7,10,13,16,19-Docosahexanenoic Acid Ethyl Esthers in Supercritic

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• 作者：Yisong Han ; Yiwen Yang ; Pingdong Wu
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2007
• 出版时间：March 2007
• 年：2007
• 卷：52
• 期：2
• 页码：555 - 559
• 全文大小：68K
• 年卷期：v.52,no.2(March 2007)
• ISSN：1520-5134

文摘

The binary diffusion coefficients of arachidonic acid ethyl esthers (AA-EE), cis-5,8,11,14,17-eicosapentaenoicacid ethyl esters (EPA-EE), and cis-4,7,10,13,16,19-docosahexaenoic acid ethyl esthers (DHA-EE) in supercriticalcarbon dioxide were measured at temperatures from 308.15 K to 338.15 K and pressures from 8.42 MPa to 29.95MPa by the Taylor-Aris capillary peak broadening method. The obtained diffusion coefficients are in the rangeof (5.54 × 10^-5) cm²·s^-1 to (13.8 × 10^-5) cm²·s^-1 with small differences between AA-EE, EPA-EE, and DHA-EE. The measured D₁₂ values were fitted with absolute average deviations of less than 2 % by three predictivemodels: Scheibel, Catchpole-King, and He-Yu-Su.