Thermodynamic stability and characterization of double clathrate hydrate with carbon dioxide + cyclopentane + deuterium oxide

Meku Maruyama; Shun Nagayama; Takuma Misawa; Satoshi Takeya; Ryo Ohmura

doi:10.1016/j.jct.2022.106998

Thermodynamic stability and characterization of double clathrate hydrate with carbon dioxide + cyclopentane + deuterium oxide

Meku Maruyama, Shun Nagayama, Takuma Misawa, Satoshi Takeya, Ryo Ohmura

機械工学科

研究成果: Article › 査読

抄録

This paper reports characterization of clathrate hydrate formed in CO₂ + cyclopentane + deuterium oxide (D₂O) system with the phase equilibrium determination and the powder X-ray diffraction (PXRD) measurements towards the development of hydrate-based tritium separation technology. Four-phase (CO₂ gas + liquid cyclopentane + liquid D₂O + hydrate) equilibrium conditions were measured using the isochoric procedure in the pressure range from 0.279 MPa to 2.735 MPa and the temperature range from 285.35 K to 293.65 K. The equilibrium temperature of CO₂ + cyclopentane + D₂O system is always higher by 2.0 K to 2.4 K compared to that of CO₂ + cyclopentane + H₂O system. The detailed crystallographic properties of both CO₂ + cyclopentane + D₂O hydrate and CO₂ + cyclopentane + H₂O hydrate including the lattice constants, the radii and volumes of each cage and the cage occupancy were estimated by the PXRD analysis. Based on the obtained results, implications for the development and operation of D₂O-hydrate-based process are discussed.

本文言語	English
論文番号	106998
ジャーナル	Journal of Chemical Thermodynamics
巻	179
DOI	https://doi.org/10.1016/j.jct.2022.106998
出版ステータス	Published - 2023 4月

ASJC Scopus subject areas

原子分子物理学および光学
材料科学（全般）
物理化学および理論化学

文献へのアクセス

10.1016/j.jct.2022.106998

他のファイルとリンク

フィンガープリント

「Thermodynamic stability and characterization of double clathrate hydrate with carbon dioxide + cyclopentane + deuterium oxide」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル

@article{d5aaddd4c9f942859ba89f648cce994a,

title = "Thermodynamic stability and characterization of double clathrate hydrate with carbon dioxide + cyclopentane + deuterium oxide",

abstract = "This paper reports characterization of clathrate hydrate formed in CO2 + cyclopentane + deuterium oxide (D2O) system with the phase equilibrium determination and the powder X-ray diffraction (PXRD) measurements towards the development of hydrate-based tritium separation technology. Four-phase (CO2 gas + liquid cyclopentane + liquid D2O + hydrate) equilibrium conditions were measured using the isochoric procedure in the pressure range from 0.279 MPa to 2.735 MPa and the temperature range from 285.35 K to 293.65 K. The equilibrium temperature of CO2 + cyclopentane + D2O system is always higher by 2.0 K to 2.4 K compared to that of CO2 + cyclopentane + H2O system. The detailed crystallographic properties of both CO2 + cyclopentane + D2O hydrate and CO2 + cyclopentane + H2O hydrate including the lattice constants, the radii and volumes of each cage and the cage occupancy were estimated by the PXRD analysis. Based on the obtained results, implications for the development and operation of D2O-hydrate-based process are discussed.",

keywords = "Carbon dioxide, Clathrate hydrate, Cyclopentane, Deuterium oxide, Phase equilibrium, Powder X-ray diffraction",

author = "Meku Maruyama and Shun Nagayama and Takuma Misawa and Satoshi Takeya and Ryo Ohmura",

note = "Funding Information: This study was supported by Keirin-racing-based research promotion fund from the JKA Foundation (grant No. 2022M-270). The authors are grateful to Taro Iwai, Risa Tokunaga and Haruki Ito for their experimental support and encouragement. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2023",

month = apr,

doi = "10.1016/j.jct.2022.106998",

language = "English",

volume = "179",

journal = "Journal of Chemical Thermodynamics",

issn = "0021-9614",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Thermodynamic stability and characterization of double clathrate hydrate with carbon dioxide + cyclopentane + deuterium oxide

AU - Maruyama, Meku

AU - Nagayama, Shun

AU - Misawa, Takuma

AU - Takeya, Satoshi

AU - Ohmura, Ryo

N1 - Funding Information: This study was supported by Keirin-racing-based research promotion fund from the JKA Foundation (grant No. 2022M-270). The authors are grateful to Taro Iwai, Risa Tokunaga and Haruki Ito for their experimental support and encouragement. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2023/4

Y1 - 2023/4

N2 - This paper reports characterization of clathrate hydrate formed in CO2 + cyclopentane + deuterium oxide (D2O) system with the phase equilibrium determination and the powder X-ray diffraction (PXRD) measurements towards the development of hydrate-based tritium separation technology. Four-phase (CO2 gas + liquid cyclopentane + liquid D2O + hydrate) equilibrium conditions were measured using the isochoric procedure in the pressure range from 0.279 MPa to 2.735 MPa and the temperature range from 285.35 K to 293.65 K. The equilibrium temperature of CO2 + cyclopentane + D2O system is always higher by 2.0 K to 2.4 K compared to that of CO2 + cyclopentane + H2O system. The detailed crystallographic properties of both CO2 + cyclopentane + D2O hydrate and CO2 + cyclopentane + H2O hydrate including the lattice constants, the radii and volumes of each cage and the cage occupancy were estimated by the PXRD analysis. Based on the obtained results, implications for the development and operation of D2O-hydrate-based process are discussed.

AB - This paper reports characterization of clathrate hydrate formed in CO2 + cyclopentane + deuterium oxide (D2O) system with the phase equilibrium determination and the powder X-ray diffraction (PXRD) measurements towards the development of hydrate-based tritium separation technology. Four-phase (CO2 gas + liquid cyclopentane + liquid D2O + hydrate) equilibrium conditions were measured using the isochoric procedure in the pressure range from 0.279 MPa to 2.735 MPa and the temperature range from 285.35 K to 293.65 K. The equilibrium temperature of CO2 + cyclopentane + D2O system is always higher by 2.0 K to 2.4 K compared to that of CO2 + cyclopentane + H2O system. The detailed crystallographic properties of both CO2 + cyclopentane + D2O hydrate and CO2 + cyclopentane + H2O hydrate including the lattice constants, the radii and volumes of each cage and the cage occupancy were estimated by the PXRD analysis. Based on the obtained results, implications for the development and operation of D2O-hydrate-based process are discussed.

KW - Carbon dioxide

KW - Clathrate hydrate

KW - Cyclopentane

KW - Deuterium oxide

KW - Phase equilibrium

KW - Powder X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=85145270396&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85145270396&partnerID=8YFLogxK

U2 - 10.1016/j.jct.2022.106998

DO - 10.1016/j.jct.2022.106998

M3 - Article

AN - SCOPUS:85145270396

SN - 0021-9614

VL - 179

JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

M1 - 106998

ER -