A number of notable studies on pure ionic clathrate hydrates have utilized their unique ionic
characteristics for electric applications, including their use as an electrolyte for nickel-metal
hydride batteries. Although quaternary ammonium salt hydrates have recently been applied to gas
separation and storage areas with the expectation of the small co-guest occupancy in empty cages,
most of the researches have been oriented to macroscopic approaches based on hydrate phase
equilibria and many other process variables. On the other hand, spectroscopic analyses for
identifying the structure transition of ionic clathrate hydrates together with a comprehensive
consideration of their complex phase patterns have not yet been reported in spite of their
importance to the energy and environmental fields. Accordingly, in this study, we present the
report of an extraordinary structural transition accompanying the occurrence of more than two
coexisting clathrate hydrate phases and channel-induced tuning pattern in ionic double hydrate
systems. In particular, the tuning observation uniquely occurring in the ionic clathrate hydrates is
quite surprising, even though the tuning behavior is more commonly observed in the non-ionic
hydrate systems. The remarkable feature of this work is that the icy ionic hydrate materials can be
effectively used in energy devices. Moreover, the microscopic analyses of ionic clathrate hydrates
for identifying the physicochemical characteristics are expected to provide new insights into a
variety of inclusion chemistry fields.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/1152 |
| Date | 07 1900 |
| Creators | Shin, Kyuchul, Cha, Jong-Ho, Choi, Sukjeong, Lee, Huen |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | text |
| Rights | Shin, Kyuchul; Cha, Jong-Ho; Choi, Sukjeong; Lee, Huen. |
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