Self-Diffusion in Compressed Dimethylether: The Influence of Dipole-Dipole Interaction and Hydrogen Bonding Upon Translational Diffusivity in Simple Fluids
1995 ◽
Vol 50
(2-3)
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pp. 145-148
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Keyword(s):
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 (ΔV*) fall from 15 (10-6 m3/mole) at the highest temperature to 7 (10-6 m3/mole) at the lowest. This trend is in keeping with values for other non-associating liquids. Comparison 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.
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1992 ◽
Vol 47
(10)
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pp. 1047-1050
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1998 ◽
Vol 102
(40)
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pp. 7735-7739
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Keyword(s):
Keyword(s):
2011 ◽
Vol 15
(10)
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pp. 2083-2094
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2001 ◽
Vol 56
(5)
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pp. 337-341
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Keyword(s):
1995 ◽
Vol 50
(2-3)
◽
pp. 149-154
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2015 ◽
Vol 106
◽
pp. 50-56
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