Phase equilibria for the ionic semiclathrate hydrate formed with tetrabutylphosphonium chloride plus CO2, CH4, or N 2

Kento Iino; Yusuke Sakakibara; Takuya Suginaka; Ryo Ohmura

doi:10.1016/j.jct.2013.12.001

Phase equilibria for the ionic semiclathrate hydrate formed with tetrabutylphosphonium chloride plus CO₂, CH₄, or N ₂

Kento Iino, Yusuke Sakakibara, Takuya Suginaka, Ryo Ohmura

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

This paper presents the phase equilibrium conditions for the semiclathrate hydrates in the systems of (CO₂, CH₄ or N₂ + tetrabutylphosphonium chloride + water). The experiments were performed by isochoric method within the range of temperature from (283.0 to 291.8) K and pressure from (0.19 to 5.02) MPa with mass fraction of tetrabutylphosphonium chloride aqueous solution 0.36. The presence of tetrabutylphosphonium chloride increases the phase equilibrium temperatures of CO₂, CH₄ or N₂ hydrates by at least 8 K at a given pressure. The gas separation performance in tetrabutylphosphonium chloride hydrate systems was compared with that in other semiclathrate hydrate systems, based on the measured phase equilibrium conditions.

Original language	English
Pages (from-to)	133-136
Number of pages	4
Journal	Journal of Chemical Thermodynamics
Volume	71
DOIs	https://doi.org/10.1016/j.jct.2013.12.001
Publication status	Published - 2014 Apr 1

Keywords

Clathrate hydrates
Phase equilibrium
Semiclathrate hydrates
Tetrabutylphosphonium chloride

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Physical and Theoretical Chemistry

Access to Document

10.1016/j.jct.2013.12.001

Cite this

@article{2234e6a298ef4741b92ac30a115dba46,

title = "Phase equilibria for the ionic semiclathrate hydrate formed with tetrabutylphosphonium chloride plus CO2, CH4, or N 2",

abstract = "This paper presents the phase equilibrium conditions for the semiclathrate hydrates in the systems of (CO2, CH4 or N2 + tetrabutylphosphonium chloride + water). The experiments were performed by isochoric method within the range of temperature from (283.0 to 291.8) K and pressure from (0.19 to 5.02) MPa with mass fraction of tetrabutylphosphonium chloride aqueous solution 0.36. The presence of tetrabutylphosphonium chloride increases the phase equilibrium temperatures of CO2, CH4 or N2 hydrates by at least 8 K at a given pressure. The gas separation performance in tetrabutylphosphonium chloride hydrate systems was compared with that in other semiclathrate hydrate systems, based on the measured phase equilibrium conditions.",

keywords = "Clathrate hydrates, Phase equilibrium, Semiclathrate hydrates, Tetrabutylphosphonium chloride",

author = "Kento Iino and Yusuke Sakakibara and Takuya Suginaka and Ryo Ohmura",

note = "Funding Information: This study was supported by a Keirin-racing-based research-promotion fund from the JKA Foundation and by JSPS KAKENHI Grant Number 25289045 .",

year = "2014",

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doi = "10.1016/j.jct.2013.12.001",

language = "English",

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T1 - Phase equilibria for the ionic semiclathrate hydrate formed with tetrabutylphosphonium chloride plus CO2, CH4, or N 2

AU - Iino, Kento

AU - Sakakibara, Yusuke

AU - Suginaka, Takuya

AU - Ohmura, Ryo

N1 - Funding Information: This study was supported by a Keirin-racing-based research-promotion fund from the JKA Foundation and by JSPS KAKENHI Grant Number 25289045 .

PY - 2014/4/1

Y1 - 2014/4/1

N2 - This paper presents the phase equilibrium conditions for the semiclathrate hydrates in the systems of (CO2, CH4 or N2 + tetrabutylphosphonium chloride + water). The experiments were performed by isochoric method within the range of temperature from (283.0 to 291.8) K and pressure from (0.19 to 5.02) MPa with mass fraction of tetrabutylphosphonium chloride aqueous solution 0.36. The presence of tetrabutylphosphonium chloride increases the phase equilibrium temperatures of CO2, CH4 or N2 hydrates by at least 8 K at a given pressure. The gas separation performance in tetrabutylphosphonium chloride hydrate systems was compared with that in other semiclathrate hydrate systems, based on the measured phase equilibrium conditions.

AB - This paper presents the phase equilibrium conditions for the semiclathrate hydrates in the systems of (CO2, CH4 or N2 + tetrabutylphosphonium chloride + water). The experiments were performed by isochoric method within the range of temperature from (283.0 to 291.8) K and pressure from (0.19 to 5.02) MPa with mass fraction of tetrabutylphosphonium chloride aqueous solution 0.36. The presence of tetrabutylphosphonium chloride increases the phase equilibrium temperatures of CO2, CH4 or N2 hydrates by at least 8 K at a given pressure. The gas separation performance in tetrabutylphosphonium chloride hydrate systems was compared with that in other semiclathrate hydrate systems, based on the measured phase equilibrium conditions.

KW - Clathrate hydrates

KW - Phase equilibrium

KW - Semiclathrate hydrates

KW - Tetrabutylphosphonium chloride

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