Consistent diffusion coefficients of ferrocene in some non-aqueous solvents: electrochemical simultaneous determination together with electrode sizes and comparison to pulse-gradient spin-echo NMR results

2011 ◽  
Vol 15 (10) ◽  
pp. 2083-2094 ◽  
Author(s):  
Janina Janisch ◽  
Adrian Ruff ◽  
Bernd Speiser ◽  
Christian Wolff ◽  
Jonas Zigelli ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Diffusion Coefficients ◽  
Spin Echo ◽  
Pulse Gradient

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) ◽  
pp. 145-148 ◽  
Author(s):  
A. Heinrich-Schramm ◽  
W. E. Price ◽  
H.-D. Lüdemann
Keyword(s):  
Hydrogen Bonding ◽  
Dipole Moment ◽  
Diffusion Coefficients ◽  
Spin Echo ◽  
Dipole Interaction ◽  
Gradient Field ◽  
Simple Fluids ◽  
Self Diffusion ◽  
Pulse Gradient ◽  
Calculated Activation

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.

Self-Diffusion in Molten Lithium Nitrate

1992 ◽  
Vol 47 (10) ◽  
pp. 1047-1050 ◽  
Author(s):  
C. Herdlicka ◽  
J. Richter ◽  
M. D. Zeidler
Keyword(s):  
Diffusion Coefficient ◽  
Diffusion Coefficients ◽  
Spin Echo ◽  
The Self ◽  
Lithium Nitrate ◽  
Equimolar Ratio ◽  
Self Diffusion ◽  
Field Gradients ◽  
Molten Lithium ◽  
Self Diffusion Coefficient

AbstractSelf-diffusion coefficients of 7Li+ ions have been measured in molten LiNO3 with several compositions of 6Li+ and 7Li+ over a temperature range from 537 to 615 K. The NMR spin-echo method with pulsed field gradients was applied. It was found that the self-diffusion coefficient depends on the isotopic composition and shows a maximum at equimolar ratio. At temperatures above 600 K this behaviour disappears.

Do dendritic amphiphiles self-assemble in water? A Fourier transform pulse-gradient spin-echo NMR study

2001 ◽  
Vol 14 (7) ◽  
pp. 392-399 ◽  
Author(s):  
Fredric M. Menger ◽  
Andrey V. Peresypkin ◽  
Shaoxiong Wu
Keyword(s):  
Fourier Transform ◽  
Spin Echo ◽  
Nmr Study ◽  
Pulse Gradient
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