Discrete Thermal Patterns of Hydrogen and Deuterium Molecules Enclathrated in Confined Hydrate Cages

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• 作者：Yong Nam Choi ; Sun-Hwa Yeon ; Youngjune Park ; Sukjeong Choi ; Huen Lee
• 刊名：Journal of the American Chemical Society
• 出版年：2007
• 出版时间：February 28, 2007
• 年：2007
• 卷：129
• 期：8
• 页码：2208 - 2209
• 全文大小：107K
• 年卷期：v.129,no.8(February 28, 2007)
• ISSN：1520-5126

文摘

A clear understanding of guest dynamic behavior occurring in solely confined nanosized cages has often been achieved through the neutron diffraction technique. However, the incoherent scattering exhibited by hydrogen generates a background signal that makes it difficult to detect the coherent Bragg scattering from the sample. Without resort to deuteration, the direct usage of H₂ gas confined in a cage without a chemical bond was successfully performed, showing stable backgrounds through the incoherent scattering length of the H₂. In particular, the discrete thermal patterns of H₂ and D₂ in a THF hydrate system in terms of the difference in the physical properties of H and D were observed, revealing the completely different dissociation behavior between H₂ + THF and D₂ + THF clathrate hydrates under varying temperatures.