Standard

Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system. / Semenov, Anton P.; Medvedev, Vladimir I.; Gushchin, Pavel A. et al.

In: Fluid Phase Equilibria, Vol. 432, 25.01.2017, p. 1-9.

Research output: Contribution to journalArticlepeer-review

Harvard

Semenov, AP, Medvedev, VI, Gushchin, PA, Kotelev, MS, Yakushev, VS, Stoporev, AS, Sizikov, AA, Ogienko, AG & Vinokurov, VA 2017, 'Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system', Fluid Phase Equilibria, vol. 432, pp. 1-9. https://doi.org/10.1016/j.fluid.2016.10.015

APA

Semenov, A. P., Medvedev, V. I., Gushchin, P. A., Kotelev, M. S., Yakushev, V. S., Stoporev, A. S., Sizikov, A. A., Ogienko, A. G., & Vinokurov, V. A. (2017). Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system. Fluid Phase Equilibria, 432, 1-9. https://doi.org/10.1016/j.fluid.2016.10.015

Vancouver

Semenov AP, Medvedev VI, Gushchin PA, Kotelev MS, Yakushev VS, Stoporev AS et al. Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system. Fluid Phase Equilibria. 2017 Jan 25;432:1-9. doi: 10.1016/j.fluid.2016.10.015

Author

Semenov, Anton P. ; Medvedev, Vladimir I. ; Gushchin, Pavel A. et al. / Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system. In: Fluid Phase Equilibria. 2017 ; Vol. 432. pp. 1-9.

BibTeX

@article{8d4ce97e2a784d47aac439ace4661342,
title = "Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system",
abstract = "Three-phase equilibrium conditions Lw-V-H (liquid water solution-vapor-hydrate) for methane hydrate in the presence of ethylene carbonate (C3H4O3) as additive in aqueous solutions have been determined experimentally by isochoric method. New experimental results are reported for pressures ranging from 4 to 22 MPa and for mass fraction of ethylene carbonate ranging from 0.05 to 0.24 (0.011–0.061 for mole fraction). The experimental results show that the addition of ethylene carbonate to the system shifts hydrate phase equilibrium to higher pressure and lower temperature. With the concentration of 0.240 mass fraction of ethylene carbonate additive in an aqueous system, the most significant decrease of the equilibrium temperature is about 3 K at a given pressure, in comparison to that of methane + water system without additive. The effect of ethylene carbonate on methane hydrate formation conditions was compared with that of cyclopentanone (C5H8O) and γ-butyrolactone (C4H6O2), which have similar molecular structures. The following phenomenon has been revealed: increase of the number of oxygen atoms in a molecule of this row shifts the hydrate phase boundary to inhibition region. Powder X-Ray diffraction (PXRD) results show that clathrate hydrate with sI structure formed in presence of ethylene carbonate within investigated range of concentration is pure phase of methane hydrate without inclusion of additive. It was also observed that there were some unknown peaks, which were not the same with peaks of pure ethylene carbonate. We speculate that they correspond to a solvate of ethylene carbonate with water.",
keywords = "Ethylene carbonate, Gas hydrates, Isochoric method, Methane, Phase equilibrium, PXRD, STORAGE, 1,4-DIOXANE, NATURAL-GAS, MIXTURES, HYDROGEN, STRUCTURE-H, STRUCTURE-II, NITROGEN, INHIBITORS, SELF-PRESERVATION",
author = "Semenov, {Anton P.} and Medvedev, {Vladimir I.} and Gushchin, {Pavel A.} and Kotelev, {Mikhail S.} and Yakushev, {Vladimir S.} and Stoporev, {Andrey S.} and Sizikov, {Artem A.} and Ogienko, {Andrey G.} and Vinokurov, {Vladimir A.}",
year = "2017",
month = jan,
day = "25",
doi = "10.1016/j.fluid.2016.10.015",
language = "English",
volume = "432",
pages = "1--9",
journal = "Fluid Phase Equilibria",
issn = "0378-3812",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Phase equilibrium for clathrate hydrate formed in methane + water + ethylene carbonate system

AU - Semenov, Anton P.

AU - Medvedev, Vladimir I.

AU - Gushchin, Pavel A.

AU - Kotelev, Mikhail S.

AU - Yakushev, Vladimir S.

AU - Stoporev, Andrey S.

AU - Sizikov, Artem A.

AU - Ogienko, Andrey G.

AU - Vinokurov, Vladimir A.

PY - 2017/1/25

Y1 - 2017/1/25

N2 - Three-phase equilibrium conditions Lw-V-H (liquid water solution-vapor-hydrate) for methane hydrate in the presence of ethylene carbonate (C3H4O3) as additive in aqueous solutions have been determined experimentally by isochoric method. New experimental results are reported for pressures ranging from 4 to 22 MPa and for mass fraction of ethylene carbonate ranging from 0.05 to 0.24 (0.011–0.061 for mole fraction). The experimental results show that the addition of ethylene carbonate to the system shifts hydrate phase equilibrium to higher pressure and lower temperature. With the concentration of 0.240 mass fraction of ethylene carbonate additive in an aqueous system, the most significant decrease of the equilibrium temperature is about 3 K at a given pressure, in comparison to that of methane + water system without additive. The effect of ethylene carbonate on methane hydrate formation conditions was compared with that of cyclopentanone (C5H8O) and γ-butyrolactone (C4H6O2), which have similar molecular structures. The following phenomenon has been revealed: increase of the number of oxygen atoms in a molecule of this row shifts the hydrate phase boundary to inhibition region. Powder X-Ray diffraction (PXRD) results show that clathrate hydrate with sI structure formed in presence of ethylene carbonate within investigated range of concentration is pure phase of methane hydrate without inclusion of additive. It was also observed that there were some unknown peaks, which were not the same with peaks of pure ethylene carbonate. We speculate that they correspond to a solvate of ethylene carbonate with water.

AB - Three-phase equilibrium conditions Lw-V-H (liquid water solution-vapor-hydrate) for methane hydrate in the presence of ethylene carbonate (C3H4O3) as additive in aqueous solutions have been determined experimentally by isochoric method. New experimental results are reported for pressures ranging from 4 to 22 MPa and for mass fraction of ethylene carbonate ranging from 0.05 to 0.24 (0.011–0.061 for mole fraction). The experimental results show that the addition of ethylene carbonate to the system shifts hydrate phase equilibrium to higher pressure and lower temperature. With the concentration of 0.240 mass fraction of ethylene carbonate additive in an aqueous system, the most significant decrease of the equilibrium temperature is about 3 K at a given pressure, in comparison to that of methane + water system without additive. The effect of ethylene carbonate on methane hydrate formation conditions was compared with that of cyclopentanone (C5H8O) and γ-butyrolactone (C4H6O2), which have similar molecular structures. The following phenomenon has been revealed: increase of the number of oxygen atoms in a molecule of this row shifts the hydrate phase boundary to inhibition region. Powder X-Ray diffraction (PXRD) results show that clathrate hydrate with sI structure formed in presence of ethylene carbonate within investigated range of concentration is pure phase of methane hydrate without inclusion of additive. It was also observed that there were some unknown peaks, which were not the same with peaks of pure ethylene carbonate. We speculate that they correspond to a solvate of ethylene carbonate with water.

KW - Ethylene carbonate

KW - Gas hydrates

KW - Isochoric method

KW - Methane

KW - Phase equilibrium

KW - PXRD

KW - STORAGE

KW - 1,4-DIOXANE

KW - NATURAL-GAS

KW - MIXTURES

KW - HYDROGEN

KW - STRUCTURE-H

KW - STRUCTURE-II

KW - NITROGEN

KW - INHIBITORS

KW - SELF-PRESERVATION

UR - http://www.scopus.com/inward/record.url?scp=84992395883&partnerID=8YFLogxK

U2 - 10.1016/j.fluid.2016.10.015

DO - 10.1016/j.fluid.2016.10.015

M3 - Article

AN - SCOPUS:84992395883

VL - 432

SP - 1

EP - 9

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

ER -

ID: 10320195