✦ LIBER ✦

Enthalpies of dissociation of clathrate hydrates of carbon dioxide, nitrogen, (carbon dioxide +  nitrogen), and (carbon dioxide  +  nitrogen +  tetrahydrofuran)

✍ Scribed by S.-P. Kang; H. Lee; B.-J. Ryu

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 90 KB
Volume: 33
Category: Article
ISSN: 0021-9614
DOI: 10.1006/jcht.2000.0765

No coin nor oath required. For personal study only.

✦ Synopsis

A calorimetric technique is described for measuring the enthalpy of dissociation liberated from solid hydrates. In this study, the enthalpies of dissociation were determined at T = 273.65 K and p = 0.1 MPa for simple and mixed hydrates of carbon dioxide, nitrogen, (carbon dioxide + nitrogen), and (carbon dioxide + nitrogen + tetrahydrofuran) using an isothermal microcalorimeter. The addition of tetrahydrofuran (THF) promoted hydrate stability and increased the number of guest molecules encaged in the small and large cavities of the hydrate lattice, resulting in lower enthalpy of dissociation, compared with structure II hydrate. The composition ratio of guest molecules did not affect the enthalpy of dissociation, which was found to be nearly constant for the same mixture.

📜 SIMILAR VOLUMES

Second and third virial coefficients for

Second and third virial coefficients for (methane  +  ethane  +  carbon dioxide)

✍ P.J. McElroy; Ji Fang; C.J. Williamson 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 88 KB

Compression factors for (methane + ethane + carbon dioxide) where x(CH 4 ) ≈ x(C 2 H 6 ) ≈ x(CO 2 ) were measured using a direct method in the temperature range 283.15 K to 333.15 K and at pressures up to 7.5 MPa. Mixture second virial coefficients were calculated, using correlations available in th

Enthalpy of solution of carbon dioxide i

Enthalpy of solution of carbon dioxide in (water  +  monoethanolamine, or diethanolamine, orN-methyldiethanolamine) and (water  +  monoethanolamine  + N-methyldiethanolamine) atT =  298.15 K

✍ James K. Carson; ; Kenneth N. Marsh; Alan E. Mather 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 167 KB

Measurements of the enthalpy of solution for carbon dioxide in (water + monoethanolamine, or diethanolamine, or N -methyldiethanolamine) and in (water + monoethanolamine + N -methyldiethanolamine) at T = 298.15 K have been made by isothermal displacement calorimetry. The estimated uncertainty is bet

Thermodynamics of liquid (nitrogen &#xa0

Thermodynamics of liquid (nitrogen  +  ethane)

✍ Henrique J.R Guedes; John A Zollweg; Eduardo J.M Filipe; Luı́s F.G Martins; Jorg 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 101 KB

The equilibrium vapour pressure of liquid {xN 2 + (1 -x)C 2 H 6 }(l) has been measured at T = 90.69 K. The excess molar Gibbs energies G E m have been calculated as a function of composition from the vapour pressure data. For the equimolar mixture Excess molar enthalpies H E m have also been measur

Quadrupole coupling in (carbon dioxide&#

Quadrupole coupling in (carbon dioxide + dioxane)(g). The excess molar enthalpy and second virial cross-coefficient of (dioxane + carbon dioxide or propane)(g)

✍ C.J. Wormald; P.W. Johnson 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 91 KB

A flow-mixing calorimeter has been used to measure the excess molar enthalpy H E m ( p o ) of (carbon dioxide + dioxane)(g) and (propane + dioxane)(g) at standard atmospheric pressure ( p o ) = 0.101325 MPa over the temperature range T = (373.2 to 433.2) K. The measurements on (propane + dioxane) we

Spectrophotometric measurement of the (v

Spectrophotometric measurement of the (vapour  +  liquid) equilibria of (sulfur dioxide  +  water)

✍ M.A. Siddiqi; J. Krissmann; P. Peters-Gerth; M. Luckas; K. Lucas 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 38 KB

Experimental determination of the critic

Experimental determination of the critical line for (carbon dioxide  +  ethane) and calculation of various thermodynamic properties for (carbon dioxide  + n-alkane) using the PSRK model

✍ Sven Horstmann; Kai Fischer; Jürgen Gmehling; Petr Kolář 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 330 KB

The binary (carbon dioxide + ethane) exhibits an unusual and interesting phase equilibrium behaviour especially in the critical region of the pure components and their mixtures. The critical line of this system was determined by using a flow apparatus. The experimental results were compared with the

Enthalpies of dissociation of clathrate hydrates of carbon dioxide, nitrogen, (carbon dioxide&#xa0;+&#xa0; nitrogen), and (carbon dioxide &#xa0;+&#xa0; nitrogen&#xa0;+&#xa0; tetrahydrofuran)

✦ Synopsis

Enthalpies of dissociation of clathrate hydrates of carbon dioxide, nitrogen, (carbon dioxide + nitrogen), and (carbon dioxide + nitrogen + tetrahydrofuran)