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Translational‐rotational coupling parameters for mutual diffusion in N ‐octane
Author(s) -
Erkey Can,
Akgerman Aydin
Publication year - 1989
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690350312
Subject(s) - tetradecane , dilution , pentane , chemistry , thermodynamics , decane , octane , diffusion , taylor dispersion , dodecane , atmospheric temperature range , coupling parameter , alkane , range (aeronautics) , heptane , analytical chemistry (journal) , materials science , chromatography , organic chemistry , physics , hydrocarbon , quantum mechanics , composite material
The infinite dilution diffusion coefficients of methane, ethane, n ‐propane, n ‐pentane, n ‐heptane, n ‐decane, n ‐dodecane, and n ‐tetradecane have been measured in n ‐octane using the Taylor dispersion technique in the temperature range 304–435 K at 1.72 × 10 6 N/m 2 . Using the framework of the rough hard sphere theory, the values of the translation‐rotational coupling parameter have been determined for each solute‐solvent pair at each temperature. The coupling parameter was found to be independent of temperature over the entire temperature range of the experiments performed and it has the same value for solutes ranging from n ‐pentane to n ‐tetradecane. A calculation scheme is presented for accurate determination of infinite dilution diffusion coefficients for a wide range of solutes in n ‐octane at a wide temperature range.