Imaging and density mapping of tetrahydrofuran clathrate hydratesby phase-contrast x-ray computed tomography

In situ observations of tetrahydrofuran (THF) hydrates in THF solution using a phase-contrast x-ray imaging system at 273 K are reported. Density analysis measurements using phase-contrast x-ray imaging suggest that the inhomogeneous growth of THF hydrate crystals occurs due to differences in the ca...

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Published in:Applied physics letters 2007-02, Vol.90 (8), p.081920-081920-3
Main Authors: Takeya, Satoshi, Honda, Kazumasa, Kawamura, Taro, Yamamoto, Yoshitaka, Yoneyama, Akio, Hirai, Yasuharu, Hyodo, Kazuyuki, Takeda, Tohoru
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Summary:In situ observations of tetrahydrofuran (THF) hydrates in THF solution using a phase-contrast x-ray imaging system at 273 K are reported. Density analysis measurements using phase-contrast x-ray imaging suggest that the inhomogeneous growth of THF hydrate crystals occurs due to differences in the cage occupancy of guest molecules, caused by the diffusion of solute. Phase-contrast x-ray imaging developed in this study can also be applied to the time-resolved imaging and density analysis of the growth and dissociation processes for a variety of hydrates besides THF hydrates.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2709645