Measurements of Binary Diffusion Coefficient and Partition Ratio at Infinite Dilution for Linoleic Acid and Arachidonic Acid in Supercritical Carbon Dioxide
Measurements of Binary Diffusion Coefficient and Partition Ratio at Infinite Dilution for Linoleic Acid and Arachidonic Acid in Supercritical Carbon Dioxide
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DOI：
10.1021/je020205i
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发表时间：
2003-04
影响因子：
--
通讯作者：
T. Funazukuri;C. Y. Kong;T. Kikuchi;S. Kagei
中科院分区：
文献类型：
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作者：
T. Funazukuri;C. Y. Kong;T. Kikuchi;S. Kagei
采用示踪响应技术，在温度308.15 ~ 343.15 K，压力9 ~ 30 MPa下，用聚乙二醇涂层毛细管柱测定了ω6族化合物亚油酸和花生四烯酸在二氧化碳中无限稀释时的二元扩散系数D12和分配比k。D12/T与CO2粘度的相关性和每种溶质的施密特数相关性很好地代表了测得的D12值，并且k值很好地代表了温度和CO2密度的函数。偏摩尔体积也从k值获得。
The binary diffusion coefficient D12 and partition ratio k were measured for two ω6 group compounds, linoleic acid and arachidonic acid, at infinite dilution in carbon dioxide at temperatures from 308.15 K to 343.15 K and pressures from 9 MPa to 30 MPa by a tracer response technique with a poly(ethylene glycol)-coated capillary column. The measured D12 values were well represented by a correlation of D12/T versus CO2 viscosity and by the Schmidt number correlation for each solute, and the k values were well represented as a function of temperature and CO2 density. Partial molar volumes were also obtained from the k values.