Enhanced methane storage in sH clathrate hydrates directly derived from sII hydrate seeds

Cited 2 time in webofscience Cited 0 time in scopus
  • Hit : 86
  • Download : 0
Storing gaseous energy, such as methane, using clathrate hydrates is highly promising due to environmentfriendliness, economic feasibility, and mild operating conditions. To develop a feasible hydrate-based methane storage system, pinacolone (PCN) was utilized as a thermodynamic promoter with pre-constructed cyclopentane hydrate seeds under static conditions. Introducing hydrate seeds and PCN resulted in instantaneous nucleation events, leading to the predominant formation of structure H (sH) hydrates containing methane and PCN. In-situ Raman and PXRD analyses supported the prominent formation of sH hydrates, indicating that methane can be easily stored in thermodynamically stable sH hydrates. Kinetic studies at varying pressure conditions (6.0, 4.5, and 3.5 MPa) were also conducted to investigate the impact of PCN under broader operating conditions. Through kinetic evaluations and ex-situ Raman spectra, we confirmed facile methane storage in sH hydrate under all pressure conditions without induction time, overcoming a major hurdle of hydrate-based technologies. Furthermore, the use of PCN resulted in higher methane uptakes compared to other structure II hydrate formers owing to cage occupancies of methane molecules in different structures. These findings suggest an efficient way to store methane with a high storage capacity in sH hydrates.
Publisher
ELSEVIER SCI LTD
Issue Date
2024-09
Language
English
Article Type
Article
Citation

FUEL, v.371

ISSN
0016-2361
DOI
10.1016/j.fuel.2024.132118
URI
http://hdl.handle.net/10203/322332
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 2 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0