International Journal of Thermophysics

, Volume 10, Issue 5, pp 953–962 | Cite as

Application of rough hard-sphere theory to diffusion in n-alkanes

  • C. Erkey
  • J. B. Rodden
  • M. A. Matthews
  • A. Akgerman


Tracer diffusion coefficients are reported for n-alkane solutes in n-dodecane, n-eicosane, n-eicosane, and n-octacosane in the temperature range 304–533 K at 1.38 MPa. Rough hard-sphere theory is used to interpret the data. The translational-rotational coupling parameters are determined for each solute-solvent pair at each temperature. The nature of the coupling parameter and the possibility of relating it to molecular properties and temperature in a homologous series are discussed.

Key words

hard-sphere theory n-alkanes roughness factor tracer diffusion 


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Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • C. Erkey
    • 1
  • J. B. Rodden
    • 1
  • M. A. Matthews
    • 1
  • A. Akgerman
    • 1
  1. 1.Department of Chemical EngineeringTexas A&M UniversityCollege StationUSA

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