About
Next to CO2-H2O, CH4-H2O is the most important gas-water binary system in nature, widely found in different geospheres of the Earth. Liquid-vapor phase equilibrium (or solubility of CH4 in liquid phase or H2O solubility in vapor phase), density, fugacity coefficient, activity, bulk modulus, the formation conditions of CH4-hydrate, and the homogenization pressure and density of fluid inclusions are calculated based on the most updated models. Questions can be directed to: duanzhenhao@yahoo.com.
TP Coverage
 |
Notes |
|
1 |
Liquid-vapor equilibrium calculations are from Ref 1. |
|
2 |
The clathrate hydrate-liquid-vapor coexistence line (HLV), Ref 2. |
|
3 |
Supercritical fluid properties (673-2573 K, 1-100000 bar), Ref 3. |
|
4 |
Pressure & density at homogenization temperature, Ref 1. |
|
References
1. Duan ZH, Mao SD. (2006) A thermodynamic model for calculating methane
solubility, density and gas phase composition of methane-bearing aqueous fluids
from 273 to 523 K and from 1 to 2000 bar. Geochim.
Cosmochim. Acta., 70 (13): 3369-3386.
2. Sun R, Duan ZH. (2005) Prediction of CH4 and CO2 hydrate phase equilibrium and
cage occupancy from ab initio intermolecular potentials. Geochim.
Cosmochim. Acta., 69 (18): 4411-4424.
3. Zhang C, Duan ZH. (2006) Equation of state of the CH4 and CH4-H2O systems up to 10GPa and 2573.15K: Molecular simulations with ab initio potential surface. To be submitted to Geochim.
Cosmochim. Acta.
© 2006 copyright by Zhenhao Duan Research Group, Institute of Geology and Geophysics, Chinese Academy of Sciences. All rights reserved.