HEINRICHSCHRAMM, A and PRICE, WE and LUDEMANN, HD (1995) SELF-DIFFUSION IN COMPRESSED DIMETHYLETHER - THE INFLUENCE OF DIPOLE-DIPOLE INTERACTION AND HYDROGEN-BONDING UPON TRANSLATIONAL DIFFUSIVITY IN SIMPLE FLUIDS. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 50 (2-3). pp. 145-148. ISSN 0932-0784,
Full text not available from this repository.Abstract
Self-diffusion coefficients of dimethylether have been measured as a function of temperature (185-458 k) and pressure (up to 200 MPa) by pulse-gradient field spin-echo NMR. Calculated activation volumes (Delta V-not equal ) fall from 15 (10(-6) m(3)/mole) at the highest temperature to 7 (10(-6) m(3)/mole) at the lowest. This trend is in keeping with values for other non-associating liquids. Comparision with self diffusion data for propane and ethanol reveals that the translational diffusivity in dimethylether is influenced by the substance's modest dipole moment (1.3 Debye). The effect is small but measurable and becomes more pronounced at lower temperatures.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HARD-SPHERE FLUID; TRANSPORT-COEFFICIENTS; TEMPERATURE-DEPENDENCE; MOLECULAR-DYNAMICS; LIQUIDS; METHANE; DIMETHYLETHER; DIFFUSION; HIGH PRESSURE |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/52783 |
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