Computation of unstable binodals not requiring concentration derivatives of the Gibbs energy
Article Abstract:
Binodal computations of tie lines in chemical systems were examined. Experiments were performed to investigate the equilibrium of three liquid phases of a Sanchez-Lacombe lattice fluid. Three types of tie lines were identified, namely, the S/S, U/U and the U/S. The S/S tie lines refer to the energy of mixing of the phase-separated system, the U/U describe the maximum of the energy of mixing where both nodes are within the unstable area, while the U/S tie line refer to a saddle point of the energy of mixing. All types can be calculated through the Gibbs energy of mixing.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Solvent effect on rotational motion of perchlorate ion
Article Abstract:
The rotational relaxation rates of perchlorate ion in 15 solvents, derived from measurements of 17O nuclear magnetic resonance spectroscopy spin-lattice relaxation rates, were evaluated. The influence of solvent on the rotational motion of a spherical ion was significant in the rate of ultrafast intramolecular charge transfer reactions. It was observed that the correlation time of the field gradient fluctuation complemented the rotational relaxation time of the perchlorate ion linked with the second rank spherical harmonics.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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