PVT measurements, virial coefficients, and Joule-Thomson inversion curve of fluorine

Abstract

Exp e rim ental PVT mea s urem e nts on gaseo u s and liquid Auorine from the trip le point (53 .5 K) to 300 K at press ures to about 21 MN/m2 are presented. Th e data are represente d by a trun ca ted viria l e quation in th e low-density region. Comparisons of th e seco nd virial coefficient from this equa ti on are made with publis hed data_ The PVT re lationship a long th e loui e-Tho mson inversion c urve was ob ta in ed from th e isothe rm -isoc hore re prese ntation of the high de nsity region.Key words: I soc hores; isoth e rm s; Joul e-Thom so n inv e rs ion c urve; liquid den sities a long melti ng line; PYT data; seco nd viriai coe ffi c ient; third viriai coefficient.

F2 dimer: Improved intermolecular potential energy surface using ab initio calculations

“…As seen in this table, the calculated B 2 ( T ) by the results of the CCSD(T) level of theory and the CBS limit (the fifth column of Table ) compared with the values of B 2 (T) based on the CCSD(T)/aug‐cc‐pVDZ and CCSD(T)/aug‐cc‐pVTZ are in better agreement with the experimental results . Comparison the calculated B 2 ( T ) with the results obtained by Salemi et al demonstrate that the main reason that they could not calculate accurate B 2 ( T ) by ab initio method refers to enough orientations of two monomers in the space was not carefully considered.…”

“…The quantum correction to B 2 ( T ) was expected to be small and was ignored. In Table , the calculated second virial coefficients are compared with available experimental data …”

Effective Intermolecular Interaction Potentials of Gaseous Fluorine, Chlorine, Bromine, and Iodine

“…This large inconsistency of these data was already mentioned by Hanley and Prydz [7]. As expected [11], White's measurements [21] of the second pVT-virial coefficient also deviate substantially from our findings and other measurements [8]. Hurly's measurements [15] on the second acoustic virial coefficient of Cl 2 , Fig.…”

“…The potential parameters were based on experimental viscosity data [2][3][4][5][6]. In 1972, Hanley and Prydz [7] obtained (m − 6 − 8) potential parameters by fitting the B data, published by Prydz and Straty [8], and presented tables with calculated values for the thermal conductivity λ and viscosity η of gaseous and liquid F 2 in the temperature range between 70 K and 300 K for pressures up to 200 bar.…”

Calculated liquid phase thermodynamic properties and liquid-vapor equilibria for fluorine-oxygen [FLOX] mixtures

“…22~^" "2^"^0 2^+^^1^2^"^ĉ an then be related to equations (6) and (7) to obtain two equations in two unknowns, i.e. the solution vapor pressure, P, and the vapor phase mole fraction, y where (y +y^= 1 The second virial coefficients were calculated using 6 ^-…”