Thermodynamic model of phase equilibria of tetrabutyl ammonium halide (fluoride, chloride, or bromide) plus methane or carbon dioxide semiclathrate hydrates

Modeling Tetra-n-butyl ammonium halides aqueous solutions with the electrolyte cubic plus association equation of state

“…For one single salt/single solvent system, e-NRTL has two adjustable parameters. The temperature dependence of interaction energy parameters was neglected in AMSA-NRTL and e-NRTL for modelling of TBAX aqueous solution systems [21][22][23][24].…”

“…Kwaterski and Herri [21] used the Soave-Redlich-Kwong (SRK) EOS plus e-NRTL for the TBAB aqueous solution. Verrett et al [22] used the Trebble-Bishnoi (TB) EOS plus e-NRTL for the TBAB aqueous solution, Shi and Liang [23] applied the Peng-Robinson (PR) EOS plus e-NRTL for TBAB, TBAC, and TBAF aqueous solutions, Najibi et al [24] utilized the PR EOS plus AMSA-NRTL for TBAB aqueous solutions. Both e-NRTL and AMSA-NRTL provide good agreement with experimental data of mean ionic activity coefficients (the performance can be seen in the discussion section).…”

Investigation of kinetics of tetrabutylammonium chloride (TBAC) + CH4 semiclathrate hydrate formation

“…3 showed the experimental conditions as well as equilibrium data of double (TBAC + CH 4 ) SCHs. [43][44][45] It could be seen that the experimental temperatures were higher than the equilibrium temperatures of pure CH 4 hydrate at the same pressure. Hence it could provide a more economical method for hydrated based gas storage.…”

Effects of multiwalled carbon nanotubes on CH4 hydrate in the presence of tetra-n-butyl ammonium bromide

“…Recently, many researchers have focused on semiclathrate hydrates owing to their possible applications in gas storage and transportation, gas separation, etc. [5][6][7][8] Hydrate technology, as an emerging approach for solidifying natural gas, is considered an alternative to liqueed natural gas (LNG) or compressed natural gas (CNG) technologies for natural gas storage and transportation. 9 The application of hydrate technology to gas storage and transportation has several advantages compared with CNG and LNG, including lower cost, improved safety, and higher efficiency.…”

“…Schematic diagram of the experimental apparatus. (1) Gas cylinder; (2) data acquisition; (3) personal computer; (4) thermostatic bath;(5)and(12)stirrers; (6) subaqueous pump;(7) and (10) reactors; (8) gas buffer tank; (9) and (11) magnetic stirrer apparatus; P, pressure transducer; T, temperature sensor.…”