Equilibrium Phase Relations and Dissociation Enthalpies of Tri-n-butylalkenylphosphonium Bromide Semiclathrate Hydrates
- Sakura AzumaSakura AzumaAdvanced Engineering Faculty, National Institute of Technology, Wakayama College, 77 Noshima, Nada, Gobo, Wakayama 644-0023, JapanMore by Sakura Azuma
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- Jin ShimadaJin ShimadaDivision of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanDivision of Energy and Photochemical Engineering, Research Center for Solar Energy Chemistry, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanResearch Fellow of Japan Society for the Promotion of Science, Tokyo 102-0083, JapanMore by Jin Shimada
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- Katsuhiko Tsunashima*Katsuhiko Tsunashima*Email: [email protected]. Tel.: +81-738-29-8413. Fax: +81-738-29-8413.Department of Applied Chemistry and Biochemistry, National Institute of Technology, Wakayama College, 77 Noshima, Nada, Gobo, Wakayama 644-0023, JapanMore by Katsuhiko Tsunashima
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- Takeshi Sugahara*Takeshi Sugahara*Email: [email protected]. Tel.: +81-6-6850-6293. Fax: +81-6-6850-6293.Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanDivision of Energy and Photochemical Engineering, Research Center for Solar Energy Chemistry, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanMore by Takeshi Sugahara
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- Atsushi TaniAtsushi TaniDepartment of Human Environmental Science, Graduate School of Human Development and Environment, Kobe University, 3-11 Tsurukabuto, Nada, Kobe, Hyogo 657-8501, JapanMore by Atsushi Tani
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- Takayuki HiraiTakayuki HiraiDivision of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanDivision of Energy and Photochemical Engineering, Research Center for Solar Energy Chemistry, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, JapanMore by Takayuki Hirai
Abstract
Semiclathrate hydrates (SCHs) have received attention as thermal storage materials because of their equilibrium temperature and relatively large dissociation enthalpy. The alkyl length of quaternary onium cations significantly affects the equilibrium temperature and dissociation enthalpy of quaternary onium salt SCHs. To investigate the effects of the double bond introduced in onium cations, in the present study, the thermodynamic stability of tri-n-butylalkenylphosphonium bromide (P444(alkenyl)-Br: alkenyl = 3-butenyl (3═1) or 4-pentenyl (4═1)) SCH was investigated. The equilibrium temperatures and the dissociation enthalpies were determined to be (277.5 ± 0.1) K and (199 ± 2) J/g for P444(3═1)-Br SCH, and (274.8 ± 0.1) K and (188 ± 2) J/g for P444(4═1)-Br SCH. The equilibrium temperatures of P444(3═1)-Br SCH and P444(4═1)-Br SCH were lower than those of the corresponding normal alkyl SCHs (P4444-Br and P4445-Br), although the equilibrium temperature of tri-n-butylallylphosphonium bromide SCH was higher than that of the P4443-Br SCH.
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This article is cited by 3 publications.
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- Sakura Azuma, Jin Shimada, Katsuhiko Tsunashima, Takeshi Sugahara, Takayuki Hirai. Effect of introducing a cyclobutylmethyl group into an onium cation on the thermodynamic properties of ionic clathrate hydrates. New Journal of Chemistry 2022, 47 (1) , 231-237. https://doi.org/10.1039/D2NJ04361K
- Sanehiro Muromachi, Masato Kida, Masato Morimoto, Shogo Yamane, Satoshi Takeya. Designing the structure and relevant properties of semiclathrate hydrates by partly asymmetric alkylammonium salts. Physical Chemistry Chemical Physics 2022, 24 (30) , 18198-18204. https://doi.org/10.1039/D2CP02625B