Supporting information for: Molecular models for the hydrogen age: Hydrogen, nitrogen, oxygen, argon and water
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1 Supporting information for: Molecular models for the hydrogen age: Hydrogen, nitrogen, oxygen, argon and water Andreas Köster, Monika Thol, and Jadran Vrabec, Lehrstuhl für Thermodynamik und Energietechnik, Universität Paderborn, Paderborn, Germany Lehrstuhl für Thermodynamik, Ruhr-Universität Bochum, Bochum, Germany Phone: Fax: Abstract This supporting information contains predictive mixture data for H 2 + O 2, additional VLE data for mixtures discussed in the main manuscript, VLE results for H 2 mixtures from the GERG-2008 EOS, results from the PC-SAFT and the Peng- Robinson EOS for the Henry s law constant and all molecular simulation data with the associated statistical uncertainty in numerical form. The confidence level for the reported data is 68.3 % (±1 standard deviation). S1
2 Contents 1 Predictive mixture data for H 2 + O 2 S3 2 Additional VLE data S4 3 VLE results for H 2 mixtures from the GERG-2008 EOS S8 4 Henry s law constant from the PC-SAFT and the Peng-Robinson EOS S9 5 Numerical molecular simulation data S Binary mixtures S Hydrogen + nitrogen S Hydrogen + argon S Nitrogen + oxygen S Nitrogen + argon S Argon + oxygen S Nitrogen + water S Hydrogen + water S Solubility data of aqueous systems S Ternary mixtures S Nitrogen + oxygen + argon S Hydrogen + nitrogen + argon S Quaternary mixture S Nitrogen + oxygen + argon + water S29 References S31 S2
3 1 Predictive mixture data for H 2 + O 2 No experimental data were available for this mixture so that the results shown in Fig. S1 are strictly predictive (no binary interaction parameter was adjusted). Figure S1: Isothermal fluid phase diagram of the binary mixture H 2 + O 2 : (, ) Molecular simulation results obtained with the present H 2 force field or (, ) with the H 2 force field of Marx and Nielaba S1, ( ) Peng-Robinson EOS and (- -) PC-SAFT EOS. For comparison, ( ) and ( ) depict molecular simulation data with binary interaction parameters of the chemically similar mixture H 2 + N 2, cf. Table 4 in the main manuscript. Statistical uncertainties of the molecular simulation data are only shown if they exceed symbol size. S3
4 2 Additional VLE data Figure S2: Isothermal saturated densities ρ sat (top) and residual enthalpy of vaporization h res vap (bottom) of the binary mixture H 2 + Ar: ( ) Molecular simulation results obtained with the present H 2 force field or ( ) with the H 2 force field of Marx and Nielaba S1, ( ) Peng-Robinson EOS and (- -) PC-SAFT EOS. Statistical uncertainties of the molecular simulation data are only shown if they exceed symbol size. S4
5 Figure S3: Isothermal saturated densities ρ sat (top) and residual enthalpy of vaporization h res vap (bottom) of the binary mixture N 2 + Ar: ( ) Molecular simulation results, ( ) Peng- Robinson EOS, (- -) PC-SAFT EOS and ( ) EOS-CG. S5
6 Figure S4: Fluid phase diagram of the ternary system N 2 + O 2 + Ar at 120 K and 1.95 to 1.99 MPa: ( ) Molecular simulation results, ( ) Peng-Robinson EOS, (- -) PC-SAFT EOS, ( ) EOS-CG and (+) experimental literature data S2. S6
7 Figure S5: Fluid phase diagram of the ternary system H 2 + N 2 + Ar at 100 K and 2.04 to 2.09 MPa: ( ) Molecular simulation results, ( ) Peng-Robinson EOS, (- -) PC-SAFT EOS, ( ) GERG-2008 EOS and (+) experimental literature data S3. S7
8 3 VLE results for H 2 mixtures from the GERG-2008 EOS In Fig. S6 the GERG-2008 EOS was used to calculate the phase envelope of H 2 mixtures. It can be seen that in some cases a false liquid-liquid equilibrium is predicted (bottom). In other cases, the vapor pressure is strongly overestimated. However, cryogenic H 2 mixtures were not the main focus during the development of the GERG-2008 EOS and its normal range of validity in temperature is specified as 90 to 450 K S4, which means that the lowest isotherm is an extrapolation. Figure S6: Isothermal fluid phase diagram of the binary mixtures H 2 + N 2 (top) and H 2 + Ar (bottom): (+) Experimental literature data S3,S5 S11 and ( ) GERG-2008 EOS S4. S8
9 4 Henry s law constant from the PC-SAFT and the Peng-Robinson EOS As discussed in the main manuscript, both the PC-SAFT and the Peng-Robinson EOS fail to reproduce the Henry s law constant of H 2, N 2, O 2 and Ar in H 2 O qualitatively, cf. Fig. S7. A single temperature independent binary interaction parameter was used for these calculations, cf. Table 4 in the main manuscript. Figure S7: Henry s law constant of H 2, N 2, O 2 and Ar in H 2 O (from top to bottom): (, black) official IAPWS guideline S12,S13, (, red) Peng-Robinson EOS, (- -) PC-SAFT EOS, ( ) EOS-CG and (+) experimental literature data (H 2 S14,S15 ; N 2 S15 S18 ; O 2 S19 S22 ; Ar S23 S26 ). S9
10 5 Numerical molecular simulation data 5.1 Binary mixtures Hydrogen + nitrogen Table S1: Homogeneous density data from molecular simulation for the equimolar mixture H 2 + N 2 using the present as well as the H 2 force field of Marx and Nielaba S1. Statistical uncertainties are denoted by δ. T p ρ H2,present δρ H2,present ρ H2,Marx δρ H2,Marx K MPa mol/l mol/l mol/l mol/l S10
11 Table S2: Vapor-liquid equilibrium data from molecular simulation for H2 + N2 using the present H2 force field. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S11
12 Table S3: Vapor-liquid equilibrium data from molecular simulation for H2 + N2 using the H2 force field of Marx and Nielaba S1. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S12
13 5.1.2 Hydrogen + argon Table S4: Homogeneous density data from molecular simulation for the equimolar mixture H 2 + Ar using the present as well as the H 2 force field of Marx and Nielaba S1. Statistical uncertainties are denoted by δ. T p ρ H2,present δρ H2,present ρ H2,Marx δρ H2,Marx K MPa mol/l mol/l mol/l mol/l S13
14 Table S5: Vapor-liquid equilibrium data from molecular simulation for H2 + Ar using the present H2 force field. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S14
15 Table S6: Vapor-liquid equilibrium data from molecular simulation for H2 + Ar using the H2 force field of Marx and Nielaba S1. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S15
16 5.1.3 Nitrogen + oxygen Table S7: Homogeneous density data from molecular simulation for the equimolar mixture N 2 + O 2. Statistical uncertainties are denoted by δ. T p ρ δρ K MPa mol/l mol/l S16
17 Table S8: Vapor-liquid equilibrium data from molecular simulation for N2 + O2. Statistical uncertainties are denoted by δ. T p δp xn2 yn2 δyn2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S17
18 5.1.4 Nitrogen + argon Table S9: Homogeneous density data from molecular simulation for the equimolar mixture N 2 + Ar. Statistical uncertainties are denoted by δ. T p ρ δρ T p ρ δρ K MPa mol/l mol/l K MPa mol/l mol/l S18
19 Table S10: Vapor-liquid equilibrium data from molecular simulation for N2 + Ar. Statistical uncertainties are denoted by δ. T p δp xn2 yn2 δyn2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S19
20 5.1.5 Argon + oxygen Table S11: Homogeneous density data from molecular simulation for the equimolar mixture Ar + O 2. Statistical uncertainties are denoted by δ. T p ρ δρ K MPa mol/l mol/l S20
21 Table S12: Vapor-liquid equilibrium data from molecular simulation for Ar + O2. Statistical uncertainties are denoted by δ. T p δp xar yar δyar ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S21
22 5.1.6 Nitrogen + water Table S13: Vapor-liquid equilibrium data from molecular simulation for N2 + H2O. Statistical uncertainties are denoted by δ. T p δp xn2 yn2 δyn2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S22
23 5.1.7 Hydrogen + water Table S14: Vapor-liquid equilibrium data from molecular simulation for H2 + H2O using the present H2 force field. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S23
24 Table S15: Vapor-liquid equilibrium data from molecular simulation for H2 + H2O using the H2 force field of Marx and Nielaba S1. Statistical uncertainties are denoted by δ. T p δp xh2 yh2 δyh2 ρliq δρliq ρvap δρvap h res v δ h res v K MPa MPa mol/mol mol/mol mol/mol mol/l mol/l mol/l mol/l kj/mol kj/mol S24
25 5.1.8 Solubility data of aqueous systems Table S16: Henry s law constant data from molecular simulation for H2 (present as well as Marx and Nielaba force field S1 ), N2, O2 and Ar in H2O. Statistical uncertainties are denoted by δ. T HH2,present δhh2,present HH2,Marx δhh2,marx HN2 δhn2 HO2 δho2 HAr δhar K GPa GPa GPa GPa GPa GPa GPa GPa GPa GPa S25
26 5.2 Ternary mixtures Nitrogen + oxygen + argon Table S17: Homogeneous density data from molecular simulation for N 2 + O 2 + Ar at the composition of ambient air x N2 = 0.781, x O2 = and x Ar = mol/mol. Statistical uncertainties are denoted by δ. T p ρ δρ T p ρ δρ K MPa mol/l mol/l K MPa mol/l mol/l S26
27 Table S18: Vapor-liquid equilibrium data from molecular simulation for N2 + O2 + Ar. Statistical uncertainties are denoted by δ. T p δp xn2 xo2 xar yn2 δyn2 yo2 δyo2 yar δyar K MPa MPa mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol S27
28 5.2.2 Hydrogen + nitrogen + argon Table S19: Vapor-liquid equilibrium data from molecular simulation for H2 + N2 + Ar. Statistical uncertainties are denoted by δ. T p δp xh2 xn2 xar yh2 δyh2 yn2 δyn2 yar δyar K MPa MPa mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol mol/mol S28
29 5.3 Quaternary mixture Nitrogen + oxygen + argon + water Table S20: Homogeneous density data from molecular simulation for N 2 + O 2 + Ar + H 2 O at a composition of x N2 = 0.758, x O2 = 0.204, x Ar = and x H2O = mol/mol (humid air). Statistical uncertainties are denoted by δ. T p ρ δρ T p ρ δρ K MPa mol/l mol/l K MPa mol/l mol/l S29
30 Table S21: Homogeneous density data from molecular simulation for N 2 + O 2 + Ar + H 2 O at a composition of x N2 = 0.163, x O2 = 0.044, x Ar = and x H2O = mol/mol (supercritical H 2 O containing 0.2 mol/mol of air components). Statistical uncertainties are denoted by δ. T p ρ δρ K MPa mol/l mol/l S30
31 References (S1) Marx, D.; Nielaba, P. Path-integral Monte Carlo techniques for rotational motion in two dimensions: Quenched, annealed, and no-spin quantum-statistical averages. Phys. Rev. A 1992, 45, (S2) Fastovskii, V. G.; Petrovskii, Y. V. A study of the vapor-liquid equilibrium in the system oxygen-argon-nitrogen. Zh. Fiz. Khim. 1957, 31, (S3) Xiao, J.; Liu, K. Measurement and correlation of vapor - liquid equilibrium data in H2 - N2 - Ar system. J. Chem. Eng. (China) 1990, 8, (S4) Kunz, O.; Wagner, W. The GERG-2008 wide-range equation of state for natural gases and other mixtures: an expansion of GERG J. Chem. Eng. Data 2012, 57, (S5) Eubanks, L. S. Vapor-Liquid equilibria in the system Hydrogen-Nitrogen-Carbon monoxide. Ph.D. thesis, Rice University, (S6) Akers, W. W.; Eubanks, L. S. Vapor-Liquid Equilibria in the System Hydrogen- Nitrogen-Carbon Monoxide. Adv. Cryog. Eng. 1960, 3, (S7) Streett, W. B.; Calado, J. C. G. Liquid-vapour equilibrium for hydrogen + nitrogen at temperatures from 63 to 110 K and pressures to 57 MPa. J. Chem. Thermodyn. 1978, 10, (S8) Calado, J. C. G.; Streett, W. B. Liquid-vapor equilibrium in the system H 2 + Ar at temperatures from 83 to 141 K and pressures to 52 MPa. Fluid Phase Equilib. 1979, 2, (S9) Ostronov, M. G.; Shatskaya, L. V.; Finyagina, R. A.; Brodskaya, L. F.; Zhirnova, N. A. Gas-Liquid Phase Equilibrium in the Argon-Hydrogen System at Intermediate Pressures. Russ. J. Phys. Chem. 1977, 51, S31
32 (S10) Volk, H.; Halsey Jr., G. D. Solubility of hydrogen and deuterium in liquid argon. J. Chem. Phys. 1960, 33, (S11) Mullins, J. C.; Ziegler, W. T. Phase equilibria in the argon-helium and argon-hydrogen systems from 68 to 108 K and pressures to 120 atmospheres. Adv. Cryog. Eng. 1965, 10, (S12) International Association for the Properties of Water and Steam, Guideline on the Henry s Constant and Vapor-Liquid Distribution Constant for Gases in H 2 O and D 2 O at High Temperatures (S13) Fernández-Prini, R.; Alvarez, J. L.; Harvey, A. H. Henry s constants and vapor liquid distribution constants for gaseous solutes in H 2 O and D 2 O at high temperatures. J. Phys. Chem. Ref. Data 2003, 32, (S14) Morris, D. R.; Yang, L.; Giraudeau, F.; Sun, X.; Steward, F. R. Henry s law constant for hydrogen in natural water and deuterium in heavy water. Phys. Chem. Chem. Phys. 2001, 3, (S15) Alvarez, J.; Fernández-Prini, R. A semiempirical procedure to describe the thermodynamics of dissolution of non-polar gases in water. Fluid Phase Equilib. 1991, 66, (S16) Rettich, T. R.; Battino, R.; Wilhelm, E. Solubility of gases in liquids. XVI. Henry s law coefficients for nitrogen in water at 5 to 50 C. J. Solution Chem. 1984, 13, (S17) Cosgrove, B. A.; Walkley, J. Solubilities of gases in H 2 O and 2 H 2 O. J. Chromatogr. A 1981, 216, (S18) Alvarez, J.; Crovetto, R.; Fernández-Prini, R. The dissolution of N 2 and of H 2 in water from room temperature to 640 K. Ber. Bunsenges. Phys. Chem. 1988, 92, S32
33 (S19) Rettich, T. R.; Battino, R.; Wilhelm, E. Solubility of gases in liquids. 22. Highprecision determination of Henry s law constants of oxygen in liquid water from T= 274 K to T= 328 K. J. Chem. Thermodyn. 2000, 32, (S20) Benson, B. B.; Krause, D.; Peterson, M. A. The solubility and isotopic fractionation of gases in dilute aqueous solution. I. Oxygen. J. Solution Chem. 1979, 8, (S21) Rettich, T. R.; Handa, Y. P.; Battino, R.; Wilhelm, E. Solubility of gases in liquids. 13. High-precision determination of Henry s constants for methane and ethane in liquid water at 275 to 328 K. J. Phys. Chem. 1981, 85, (S22) Cramer, S. D. The solubility of oxygen in brines from 0 to 300 C. Ind. Eng. Chem. Process Des. Dev. 1980, 19, (S23) Rettich, T. R.; Battino, R.; Wilhelm, E. Solubility of gases in liquids. 18. Highprecision determination of Henry fugacities for argon in liquid water at 2 to 40 C. J. Solution Chem. 1992, 21, (S24) Krause, D.; Benson, B. B. The solubility and isotopic fractionation of gases in dilute aqueous solution. IIa. Solubilities of the noble gases. J. Solution Chem. 1989, 18, (S25) Potter, R. W.; Clynne, M. A. The solubility of the noble gases He, Ne, Ar, Kr, and Xe in water up to the critical point. J. Solution Chem. 1978, 7, (S26) Crovetto, R.; Fernández-Prini, R.; Japas, M. L. Solubilities of inert gases and methane in H 2 O and in D 2 O in the temperature range of 300 to 600 K. J. Chem. Phys. 1982, 76, S33
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