Study of hydrate nucleation and growth aided by micro-nanobubbles: Probing the hydrate memory effect

被引:36
作者
Feng, Yu [1 ]
Han, Yuze [1 ]
Gao, Peng [1 ]
Kuang, Yangmin [1 ,2 ]
Yang, Lei [1 ,3 ]
Zhao, Jiafei [1 ,3 ]
Song, Yongchen [1 ]
机构
[1] Dalian Univ Technol, Key Lab Ocean Energy Utilizat, Energy Conservat Minist Educ, Dalian 116024, Peoples R China
[2] China Univ Geosci, Hubei Key Lab Marine Geol Resources, Wuhan 430074, Peoples R China
[3] Dalian Univ Technol, Ningbo Inst, Ningbo 315016, Peoples R China
基金
中国国家自然科学基金;
关键词
Hydrate kinetics; Bubble; Induction time; Nanoparticle tracking analysis; GAS-HYDRATE; CLATHRATE HYDRATE; INDUCTION TIME; WATER; METHANE; STORAGE; TECHNOLOGY; CO2;
D O I
10.1016/j.energy.2023.130228
中图分类号
O414.1 [热力学];
学科分类号
摘要
Gas hydrates have been considered promising in gas storage, gas separation, and water desalination. The hydrates' technical application is affected by the long kinetics time. Of interest is gas hydrates show strong facilitation in dissociated water containing a high concentration of micro-nanobubbles. Here, it was discovered that the nano -particles present in the dissociated water were identified as nano -bubbles, characterized by nanoparticle track analyzer and infrared spectrum. The presence of bubbles increased the nucleation probability, likely attributed to the provision of nucleation sites. Results indicated that the ability of facilitation was related to the nanobubble types: the bubble solution with the same guest molecules exhibited similar facilitation to dissociated water; specifically, the average induction time was shortened by 27.48 %, the nucleation probability was increased by 50 % compared to deionized water. Moreover, the time hydrate filled the field of view with high bubble concentration was reduced by 60 % compared with low bubble concentration. The facilitation effect mechanism could be related to the presence of gas -dense regions inside the bubbles, based on the Raman results. This finding may offer valuable insights for the application of hydrate -based energy storage technology and shed light on the potential role of bubbles in causing memory effects.
引用
收藏
页数:8
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