Clathrate hydrate crystal growth at the seawater/hydrophobic-guest-liquid interface
Clathrate hydrate crystal growth at the seawater/hydrophobic-guest-liquid interface
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DOI：
10.1021/cg901334z
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发表时间：
2010-03
影响因子：
3.8
通讯作者：
Riki Sakemoto;H. Sakamoto;K. Shiraiwa;R. Ohmura;T. Uchida
中科院分区：
文献类型：
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作者：
Riki Sakemoto;H. Sakamoto;K. Shiraiwa;R. Ohmura;T. Uchida
本文报道了在水/海水和客体界面生长笼状水合物晶体的目视观察，以揭示盐对晶体生长的影响。以环戊烷为客体，形成结构II水合物。环戊烷水合物晶体沿环戊烷与海水的界面生长，形成覆盖整个界面的多晶层。根据环戊烷水合物大气压平衡温度的过冷度(Δ)对水合物晶体的形态进行了直观分析和分类。结果表明，在相同的过冷度条件下，水和海水中的环戊烷水合物晶体形态基本一致。总体趋势是，对于ΔTSUB4.5K，晶体呈三角形或剑形。
This paper reports visual observations of clathrate hydrate crystals growth at the interface of water/seawater and a guest substance to reveal the effect of salts on the crystal growth. Cyclopentane was used as the guest substance to form a structure II hydrate. Cyclopentane hydrate crystals grew along the interface of cyclopentane and seawater to form a polycrystalline layer covering the entire interface. We visually analyzed the individual crystals and classified the morphology of the hydrate crystals according to the subcooling (ΔTsub) from the cyclopentane hydrate equilibrium temperature of atmospheric pressure. The results showed that the morphology of the individual cyclopentane hydrate crystals in water and seawater are qualitatively similar at similar subcooling. As a general trend, for ΔTsub 4.5 K, the crystals have triangular or swordlik...