2009
DOI: 10.1021/je9004883
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Thermodynamic Stabilities of Tetra-n-butyl Ammonium Chloride + H2, N2, CH4, CO2, or C2H6 Semiclathrate Hydrate Systems

Abstract: The thermodynamic stabilities of semiclathrate hydrates were investigated in the tetra-n-butyl ammonium chloride (TBAC) aqueous solution (mole fraction of TBAC is 0.0323) + H2, + N2, + CH4, + CO2, and + C2H6 systems. The dissociation temperature of each semiclathrate hydrate is higher than that of the simple TBAC semiclathrate hydrate (hydration number is 30) except for the C2H6-containing system in the whole pressure region under the present experimental conditions. Isobaric dissociation temperatures of the T… Show more

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Cited by 111 publications
(98 citation statements)
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“…For example, the following dissociation temperatures have been reported in ascending order of size: T = 301 K for TBAF and TBA hydroxide hydrates [7,14,15], T = 288 K for TBA chloride (TBAC) hydrate [3,11], and T = $286 K for TBAB hydrate [9][10][11]. Such semiclathrate hydrates can be stable at temperatures between T = (273 and 300) K, and are capable of trapping small gas molecules (e.g., H 2 , CH 4 , CO 2 , and N 2 ) under milder conditions than those required for the corresponding pure gas hydrate (e.g., [16] storage materials have been carried out by many research groups (e.g., [16][17][18][19][20][21][22][23][24][25]). In particular, fundamental and applied studies on TBAB hydrates have been conducted in detail because of the relatively noncorrosive nature of this hydrate system.…”
Section: Introductionmentioning
confidence: 99%
“…For example, the following dissociation temperatures have been reported in ascending order of size: T = 301 K for TBAF and TBA hydroxide hydrates [7,14,15], T = 288 K for TBA chloride (TBAC) hydrate [3,11], and T = $286 K for TBAB hydrate [9][10][11]. Such semiclathrate hydrates can be stable at temperatures between T = (273 and 300) K, and are capable of trapping small gas molecules (e.g., H 2 , CH 4 , CO 2 , and N 2 ) under milder conditions than those required for the corresponding pure gas hydrate (e.g., [16] storage materials have been carried out by many research groups (e.g., [16][17][18][19][20][21][22][23][24][25]). In particular, fundamental and applied studies on TBAB hydrates have been conducted in detail because of the relatively noncorrosive nature of this hydrate system.…”
Section: Introductionmentioning
confidence: 99%
“…×, CO 2 + 0.0874 mass fraction TBAC aqueous solution . Δ, CO 2 + 0.3398 mass fraction TBAC aqueous solution…”
Section: Resultsmentioning
confidence: 99%
“…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.…”
Section: Formation Kinetics Of (Tbab + Ch 4 ) Hydratementioning
confidence: 88%