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Molecular Physics
An International Journal at the Interface Between Chemistry and Physics
Volume 78, 1993 - Issue 1
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Original Articles

Temperature and density dependence of the selfdiffusion coefficients of liquid n-octane and toluene

Kenneth R. Harris Department of Chemistry, University College, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, 2601, Australia
,
Justin J. Alexander Department of Chemistry, University College, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, 2601, Australia
,
Teresa Goscinska Department of Chemistry, University College, University of New South Wales, Australian Defence Force Academy, Canberra, ACT, 2601, Australia
,
Rakesh Malhotra Atomic and Molecular Physics Laboratories, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT, 2601, Australia
,
Lawrence A. Woolf Atomic and Molecular Physics Laboratories, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT, 2601, Australia
&
John H. Dymond Department of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK
Pages 235-248 | Received 17 Jun 1992, Accepted 03 Jul 1992, Published online: 22 Aug 2006
 
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Abstract

Selfdiffusion coefficients determined by the NMR spin-echo technique are reported for n-octane (-25–75°C, 0·1–361 MPa) and toluene (-50–50°C, 0·1–369 MPa). In the case of toluene, these are supplemented at 25°C by 14C radiotracer diaphragm cell measurements. The results for each substance are correlated with high pressure viscosity data. Those for toluene overlap the range of applicability of the rough hard sphere model, and this model is used to compare the transport properties of toluene with those of benzene and mesitylene.

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Related Research Data

Fickian and thermal diffusion coefficients of binary mixtures of isobutylbenzene and n-alkanes at different concentrations from the optical beam deflection technique
Source: AIP Publishing

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