High temperatures and high pressures Brillouin scattering studies of liquid H(2)O+CO(2) mixtures.

The Brillouin scattering spectroscopy studies have been conducted in a diamond anvil cell for a liquid mixtures composed of 95 mol % H(2)O and 5 mol % CO(2) under high temperatures and pressures. The sound velocity, refractive index, density, and adiabatic bulk modulus of the H(2)O+CO(2) mixtures were determined under pressures up to the freezing point at 293, 453, and 575 K. It is found from the experiment that sound velocities of the liquid mixture are substantially lower than those of pure water at 575 K, but not at lower temperatures. We presented an empirical relation of the density in terms of pressure and temperature. Our results show that liquid H(2)O+CO(2) mixtures are more compressible than water obtained from an existing equation of state of at 453 and 575 K.

[1]  Zhenhao Duan,et al.  A model for C-O-H fluid in the Earth's mantle , 2009 .

[2]  Zhen Fang,et al.  Techniques, Applications and Future Prospects of Diamond Anvil Cells for Studying Supercritical Water Systems , 2009 .

[3]  J. Bass.  Recent progress in studies of the elastic properties of earth materials , 2008 .

[4]  E. Königsberger,et al.  Speciation studies in aqueous HCO3(-)-CO3(2-) solutions. A combined Raman spectroscopic and thermodynamic study. , 2008, Dalton transactions.

[5]  G. Zou,et al.  In situ Brillouin scattering study of water in high pressure and high temperature conditions , 2007 .

[6]  C. Heinrich.  Fluid-Fluid Interactions in Magmatic-Hydrothermal Ore Formation , 2007 .

[7]  Zhenhao Duan,et al.  PVTx properties of the CO2–H2O and CO2–H2O–NaCl systems below 647 K: Assessment of experimental data and thermodynamic models , 2007 .

[8]  A. Polian,et al.  Hypersonic velocity measurement using Brillouin scattering technique. Application to water under high pressure and temperature. , 2006, Ultrasonics.

[9]  V. Giordano,et al.  Melting curve and fluid equation of state of carbon dioxide at high pressure and high temperature. , 2006, The Journal of chemical physics.

[10]  Zhenhao Duan,et al.  Equation of state of the H2O, CO2, and H2O-CO2 systems up to 10 GPa and 2573.15 K: Molecular dynamics simulations with ab initio potential surface , 2006 .

[11]  M. Hirschmann,et al.  Melting in the Earth's deep upper mantle caused by carbon dioxide , 2006, Nature.

[12]  G. Zou,et al.  High pressure-temperature Brillouin study of liquid water: evidence of the structural transition from low-density water to high-density water. , 2005, The Journal of chemical physics.

[13]  R. Bodnar.  Fluids in planetary systems , 2005 .

[14]  C. Manning.  The chemistry of subduction-zone fluids , 2004 .

[15]  J. Brown,et al.  Equation of state of water based on speeds of sound measured in the diamond-anvil cell , 2004 .

[16]  M. Gottschalk,et al.  Perturbation theory based equation of state for polar molecular fluids: II. Fluid mixtures , 2003 .

[17]  A. Polian.  Brillouin scattering at high pressure: an overview , 2003 .

[18]  Zhenhao Duan,et al.  An improved model calculating CO2 solubility in pure water and aqueous NaCl solutions from 273 to 533 K and from 0 to 2000 bar , 2003 .

[19]  J. Eggert,et al.  Measurement of refractive index and equation of state in dense He, H 2 , H 2 O , and Ne under high pressure in a diamond anvil cell , 2002, cond-mat/0210378.

[20]  W. Wagner,et al.  The IAPWS Formulation 1995 for the Thermodynamic Properties of Ordinary Water Substance for General and Scientific Use , 2002 .

[21]  J. Connolly,et al.  Metamorphic devolatilization of subducted marine sediments and the transport of volatiles into the Earth's mantle , 2001, Nature.

[22]  L. Slutsky,et al.  The equation of state of water to 200°C and 3.5 GPa: model potentials and the experimental pressure scale , 1998 .

[23]  M. Grimsditch,et al.  BRILLOUIN SCATTERING AT HIGH PRESSURE OR HIGH TEMPERATURE , 1997 .

[24]  B. Wood,et al.  Experimental measurements of the properties of H2OCO2 mixtures at high pressures and temperatures , 1997 .

[25]  A. Polian,et al.  Test of the equation of state of water up to freezing at 100 and 200 °C , 1996 .

[26]  W. Wagner,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple‐Point Temperature to 1100 K at Pressures up to 800 MPa , 1996 .

[27]  Sasaki,et al.  Acoustic velocities, refractive index, and elastic constants of liquid and solid CO2 at high pressures up to 6 GPa. , 1993, Physical review. B, Condensed matter.

[28]  M. Nicol,et al.  Temperature dependence of the ruby luminescence method for measuring high pressures , 1992 .

[29]  D. Ragan,et al.  Calibration of the ruby R1 and R2 fluorescence shifts as a function of temperature from 0 to 600 K , 1992 .

[30]  John H. Weare,et al.  An equation of state for the CH4-CO2-H2O system: II. Mixtures from 50 to 1000°C and 0 to 1000 bar , 1992 .

[31]  John H. Weare,et al.  An equation of state for the CH4-CO2-H2O system: I. Pure systems from 0 to 1000°C and 0 to 8000 bar , 1992 .

[32]  U. Maeder.  H 2 O-CO 2 mixtures; a review of P-V-T-X data and an assessment from a phase-equilibrium point of view , 1991 .

[33]  S. Peacock.  Fluid Processes in Subduction Zones , 1990, Science.

[34]  B. Hillebrands,et al.  Construction and performance of a Brillouin scattering set-up using a triple-pass tandem Fabry-Perot interferometer , 1987 .

[35]  K. Vedam,et al.  Refractive index of liquids at high pressures , 1983 .

[36]  J. W. Shaner,et al.  Specific volume measurements of Cu, Mo, Pd, and Ag and calibration of the ruby R1 fluorescence pressure gauge from 0.06 to 1 Mbar , 1978 .

[37]  P. Wyllie.  The effect of H2O and CO2 on planetary mantles , 1978 .

[38]  W. S. Fyfe,et al.  Fluids in the earth's crust , 1978 .

[39]  Charles H. Whitfield,et al.  Elastic moduli of NaCl by Brillouin scattering at high pressure in a diamond anvil cell , 1976 .

[40]  D. Eggler.  Does CO2 cause partial melting in the low-velocity layer of the mantle? , 1976 .

[41]  D. Kerrick.  Review of metamorphic mixed-volatile (H2O-CO2) equilibria , 1974 .

[42]  William A. Bassett,et al.  Miniature diamond anvil pressure cell for single crystal x‐ray diffraction studies , 1974 .

[43]  J. R. Sandercock,et al.  Brillouin scattering study of SbSI using a double-passed, stabilised scanning interferometer , 1970 .