NMR Studies of Self-Diffusion in Liquids

ChemInform ◽  
2003 ◽  
Vol 34 (9) ◽  
Author(s):  
Hermann Weingaertner ◽  
Manfred Holz
Keyword(s):  
Nmr Studies ◽  
Self Diffusion ◽  
Diffusion In Liquids

5  NMR studies of self-diffusion in liquids

2002 ◽  
Vol 98 ◽  
pp. 121-156 ◽  
Author(s):  
Hermann Weingärtner ◽  
Manfred Holz
Keyword(s):  
Nmr Studies ◽  
Self Diffusion ◽  
Diffusion In Liquids

A theory for self-diffusion in liquids

1999 ◽  
Vol 110 (6) ◽  
pp. 3009-3022 ◽  
Author(s):  
Maxim Vergeles ◽  
Grzegorz Szamel
Keyword(s):  
Self Diffusion ◽  
Diffusion In Liquids

scholarly journals 15N and 133Cs Solid NMR Studies on Ionic Dynamics in Plastic CsNO2

1996 ◽  
Vol 51 (5-6) ◽  
pp. 761-768 ◽  
Author(s):  
H. Honda ◽  
M. Kenmotsu ◽  
N. Onoda-Yamamuro ◽  
H. Ohki ◽  
S. Ishimaru ◽  
...  
Keyword(s):  
Phase Ii ◽  
Relaxation Times ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Temperature Phase ◽  
Nmr Studies ◽  
Self Diffusion ◽  
Spin Lattice ◽  
Solid Nmr ◽  
Plastic Phase

The temperature dependence of the 15N and 133Cs NMR spin-lattice relaxation times, the 15N spin-spin relaxation time, and the 15N and 133Cs spectra of CsNO2 was observed in the plastic phase (209.2 < T < 673 K (m. p.)) and the low-temperature phase (Phase II). In Phase II we found the NO-2 180°-flip, which could be attributed to the anomalous increase of the heat capacity curve, and determined the activation energy of this motion to be 8.7-11.7 kJ mol-1. The 15N and 133Cs spectra in this phase are inconsistent with the reported crystal structure R3̅m and can be explained by lower crystal symmetry. In the plastic phase we detected a new anionic motion with 11 kJ mol-1 , an isotropic NO-2 reorientation with 8.5-9 kJ mol-1, and ionic self-diffusion with 47 kJ mol-1. The presence of ionic self-diffusion was confirmed by measuring the electrical conductivity.

Self-Diffusion in Liquids. II. Comparison between Mutual and Self-Diffusion Coefficients

1959 ◽  
Vol 63 (12) ◽  
pp. 2059-2061 ◽  
Author(s):  
A. P. Hardt ◽  
D. K. Anderson ◽  
R. Rathbun ◽  
B. W. Mar ◽  
A. L. Babb
Keyword(s):  
Diffusion Coefficients ◽  
Self Diffusion ◽  
Diffusion In Liquids

NMR studies of carbon dioxide and methane self-diffusion in ZIF-8 at elevated gas pressures

Adsorption ◽  
2012 ◽  
Vol 18 (5-6) ◽  
pp. 359-366 ◽  
Author(s):  
Anne-Kristin Pusch ◽  
Tobias Splith ◽  
Lutz Moschkowitz ◽  
Shilpi Karmakar ◽  
Rajesh Biniwale ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Nmr Studies ◽  
Self Diffusion ◽  
Gas Pressures

scholarly journals Negative Pressure Regimes in Ionic Liquids: Structure and Interactions in Stretched Liquids as Probed by NMR

2018 ◽  
Author(s):  
Luis Paulo Rebelo
Keyword(s):  
Ionic Liquids ◽  
Negative Pressure ◽  
Diffusion Coefficients ◽  
Sharp Increase ◽  
Molten Salts ◽  
Structure And Properties ◽  
Saturated Liquid ◽  
Nmr Studies ◽  
Preliminary Testing ◽  
Self Diffusion

In this work, a broad pallete of macroscopically sized samples of ionic liquids was used, in which tensions of about -100 MPa were obtained in preliminary testing methodologies before cavitation would occur. Preliminary NMR studies have been performed on ionic liquids under homogeneous tension. Upon entering into these metastable regimes of negative pressure, it is possible to observe a sharp increase in the anion and cation self-diffusion coefficients as compared to the equilibrium saturated liquid conditions at identical temperatures. [L02 - Molten Salts and Ionic Liquids 21, Structure and Properties I, Tuesday, October 2nd, 10:40, #1832-AiMES2018, Universal 9 – Abstract Oral #116064 ]

Sign in / Sign up

Export Citation Format

Share Document