surface structure of clathrate hydrate

为了研究低压条件下笼形水合物的形成过程，我们测量了含二氧化碳的气相沉积无定形冰的红外光谱。 从水分子的O-H伸缩模和二氧化碳分子的非对称伸缩模的振动频率随温度的变化关系，分析了水分子中二氧化碳分子的结构变化。 结果表明，二氧化碳笼形水合物从气相沉积的无定形冰的转变过程。

To investigate the formation process of clathrate hydrate in a low pressure condition, we measured infrared spectra of a vapor-deposited amorphous ice including carbon dioxide. From the temperature dependence of the vibration frequencies of the O-H stretching modes of water and asymmetric stretching mode of carbon dioxide, we analyzed the structural change of water including carbon dioxide. The results showed the transition process of carbon dioxide clathrate hydrate from the vapor-deposited amorphous ice.