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Title: Liquid-Vapor Equilibrium Isotopic Fractionation of Water. How well can classical water models predict it?

Journal Article · · The Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.3082401· OSTI ID:979142

The liquid-vapor equilibrium isotopic fractionation of water is determinedby molecular-based simulation, via Gibbs Ensemble Monte Carlo andisothermal-isochoric molecular dynamics involving two radically differentbut realistic models, the extended simple point charge (SPC/E) and theGaussian charge polarizable (GCP) models. The predicted temperaturedependence of the liquid-vapor equilibrium isotopic fractionation factorsfor H218O / H216O, H217O / H216O, and 2H 1H 16O / 1H216O are comparedagainst the most accurate experimental datasets to assess the ability ofthese intermolecular potential models to describe quantum effectsaccording to the Kirkwood-Wigner free energy perturbation!2!expansion. Predictions of the vapor pressure isotopic effect for theH218O / H216O and H217O / H216O pairs are also presented in comparisonwith experimental data and two recently proposed thermodynamicmodeling approaches. Finally, the simulation results are used to discusssome approximations behind the microscopic interpretation of isotopicfractionation based on the underlying roto-translational coupling.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
OSTI ID:
979142
Journal Information:
The Journal of Chemical Physics, Vol. 130, Issue 9; ISSN 0021-9606
Country of Publication:
United States
Language:
English

References (46)

Isotope effects in solution thermodynamics: excess properties in solutions of isotopomers journal December 1993
Force and torque correlations in diatomic fluids journal April 1984
A molecular dynamics method for simulations in the canonical ensemble journal June 1984
Limitations of the rigid planar nonpolarizable models of water journal February 2006
Vapor pressure isotope effect in aqueous systems. III. Vapor pressure of HOD (-60 to 200.deg.) journal October 1972
Distribution of solutes between coexisting steam and water journal July 1994
Quantum corrections and the computer simulation of molecular fluids journal December 1979
Many-body and quantum effects in the radial distribution function of liquid neon and argon journal November 1995
A first principles simulation of rigid water journal March 2004
A Hydrogen Isotope of Mass 2 and its Concentration journal April 1932
Liquid‐Vapor Argon Isotope Fractionation from the Triple Point to the Critical Point. Mean Laplacian of the Intermolecular Potential in Liquid Argon journal May 1972
Liquid-vapor isotopic fractionation factors of diatomic fluids: A direct comparison between molecular simulation and experiment journal July 2006
Semiclassical propagators and Wigner-Kirkwood expansions for hard-core potentials journal July 1991
Molecular Models of Water: Derivation and Description book January 1999
Classical and Quantum Mechanical Hypervirial Theorems journal November 1960
XII. Note on the vapour pressure and affinity of isotopes journal July 1919
Quantum Statistics of Almost Classical Assemblies journal July 1933
Direct determination of phase coexistence properties of fluids by Monte Carlo simulation in a new ensemble journal July 1987
Quantum theory of condensed permanent gases III the equation of state of liquids journal December 1948
Model dependence of quantum isotope effects in liquid water journal September 1991
Liquid dynamics and inelastic scattering of neutrons journal January 1959
Fractioning of Isotopic Species between Coexisting Liquid and Vapor Water: Complete Temperature Range, Including the Asymptotic Critical Behavior journal April 1995
A Fixed Point Charge Model for Water Optimized to the Vapor−Liquid Coexistence Properties journal September 1998
Vapour pressure of H218O ice (–50 to 0°C) and H218O water (0 to 170°C)
  • Jakli, Gyorgy; Staschewski, D.
  • Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, Vol. 73, Issue 0 https://doi.org/10.1039/f19777301505
journal January 1977
Mean square force in liquid argon and separation factor of isotopes journal May 1964
A quantum mechanical study of structure in liquid H 2 O and D 2 O journal June 1985
Novel Corresponding-States Principle Approach for the Equation of State of Isotopologues:  H 2 18 O as an Example journal January 2007
Vapor Pressure and Related Thermodynamic Properties of 36 Ar journal September 2000
The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use journal June 2002
First quantum corrections to second virial coefficients for anisotropic interactions: Simple, corrected formula a) journal June 1983
A computer simulation for a simple model of liquid hydrogen chloride journal September 1979
Infrared spectra, rotational correlation functions, and intermolecular mean squared torques in compressed gaseous methane journal June 1968
Gibbs-Duhem integration: a new method for direct evaluation of phase coexistence by molecular simulation journal April 1993
From dimer to condensed phases at extreme conditions: Accurate predictions of the properties of water by a Gaussian charge polarizable model journal June 2005
Isotopic Self-Exchange Reactions of Water:  Evaluation of the Rule of the Geometric Mean in Liquid−Vapor Isotope Partitioning journal September 2005
Vapor Pressures of the Neon Isotopes journal July 1961
Calculation of vapor pressure isotope effects in the rare gases and their mixtures using an integral equation theory journal March 2003
The missing term in effective pair potentials journal November 1987
Liquid-vapor fractionation of oxygen and hydrogen isotopes of water from the freezing to the critical temperature journal August 1994
Vapor Pressure Isotope Effects of Water Studied by Molecular Orbital Calculations journal January 2003
Quantum effects in light and heavy liquid water: A rigid-body centroid molecular dynamics study journal September 2004
The Vapor Pressure of Isotopes journal December 1938
Isotopic effect on phase equilibria of atomic fluids and their mixtures: A direct comparison between molecular simulation and experiment journal August 2003
High precision measurements of17O/16O and18O/16O ratios in H2O journal January 2005
Molecular dynamics simulation of dense fluid methane journal March 1979
Comment on ‘Quantum corrections and the computer simulation of molecular fluids’: A consistent assumption about the principal moments of inertia for linear molecules journal June 1981