Journal
CHEMICAL PHYSICS LETTERS
Volume 779, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2021.138869
Keywords
Clathrate hydrate; Cyclopentanemethanol; Guest inclusion; Hydrogen bonding; Guest interaction
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT
- Ministry of Science and ICT) [NRF 2019R1F1A1058167, NRF 2021R1F1A1049420]
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The study revealed the formation of structure II hydrate in the binary (cyclopentanemethanol + CH4) hydrate, with the inclusion of cyclopentanemethanol and CH4. Rietveld analysis confirmed the formation of a cubic Fd3m hydrate and possible host-guest interactions. The thermodynamic stability of the binary (cyclopentanemethanol + CH4) hydrate was found to be higher compared to pure methane hydrate.
Herein the guest inclusions and interactions in a binary (cyclopentanemethanol + CH4) hydrate were explored via 13C NMR spectroscopy and XRD analysis. The 13C NMR spectra of the binary (cyclopentanemethanol + CH4) hydrate confirmed the formation of structure II hydrate with the inclusion of cyclopentanemethanol and CH4 in the structure II hydrate cages. Rietveld analysis on XRD profiles of the binary (cyclopentanemethanol + CH4) hydrate confirmed the formation of a cubic Fd3m hydrate and the possible host-guest interactions. Finally, the thermodynamic stability of the binary (cyclopentanemethanol + CH4) hydrate was relatively stable than that of the pure methane hydrate.
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