SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2025, Vol. 77 ›› Issue (1): 167-174.DOI: 10.1016/j.cjche.2024.09.021

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The investigation of Gemini surfactant effects on CH4 and CO2 hydrates

Lejun Wu1, Jingbo Gao2, Jing Li2, Haibo Liu1, Qiang Sun2   

  1. 1. China Oilfield Services Limited, Sanhe 065201, China;
    2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum(Beijing), Beijing 102249, China
  • 收稿日期:2024-04-19 修回日期:2024-09-05 接受日期:2024-09-05 出版日期:2025-01-28 发布日期:2024-10-30
  • 通讯作者: Qiang Sun,E-mail:sunq@cup.edu.cn
  • 基金资助:
    This work was supported by National Natural Science Foundation of China (22278424, 22127812, 22008257).

The investigation of Gemini surfactant effects on CH4 and CO2 hydrates

Lejun Wu1, Jingbo Gao2, Jing Li2, Haibo Liu1, Qiang Sun2   

  1. 1. China Oilfield Services Limited, Sanhe 065201, China;
    2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum(Beijing), Beijing 102249, China
  • Received:2024-04-19 Revised:2024-09-05 Accepted:2024-09-05 Online:2025-01-28 Published:2024-10-30
  • Contact: Qiang Sun,E-mail:sunq@cup.edu.cn
  • Supported by:
    This work was supported by National Natural Science Foundation of China (22278424, 22127812, 22008257).

摘要: As a kind of novel environmental-friendly surfactant, Gemini surfactant has attracted extensive research interests in its effects on gas hydrate formation. We investigated the effects of dioctyl sodium sulfosuccinate (AOT) on the formation thermodynamics/kinetics of CH4 and CO2 hydrates. Experimental results indicate that while AOT does not exhibit significant thermodynamic promotion for hydrate formation, it demonstrates favorable kinetic promotion effects. Its promotion effect surpasses that of the traditional kinetic promoter SDS and can enhance the gas storage capacity of hydrates. Utilizing the Chen-Guo hydrate model and adsorption kinetic model, we established a kinetic model for AOT with a predictive deviation of 7.17% and fitted key parameters accordingly.

关键词: Dioctyl sodium sulfosuccinate (AOT), CH4/CO2 hydrates, Thermodynamics/kinetics, Hydrate promoter, Kinetic model

Abstract: As a kind of novel environmental-friendly surfactant, Gemini surfactant has attracted extensive research interests in its effects on gas hydrate formation. We investigated the effects of dioctyl sodium sulfosuccinate (AOT) on the formation thermodynamics/kinetics of CH4 and CO2 hydrates. Experimental results indicate that while AOT does not exhibit significant thermodynamic promotion for hydrate formation, it demonstrates favorable kinetic promotion effects. Its promotion effect surpasses that of the traditional kinetic promoter SDS and can enhance the gas storage capacity of hydrates. Utilizing the Chen-Guo hydrate model and adsorption kinetic model, we established a kinetic model for AOT with a predictive deviation of 7.17% and fitted key parameters accordingly.

Key words: Dioctyl sodium sulfosuccinate (AOT), CH4/CO2 hydrates, Thermodynamics/kinetics, Hydrate promoter, Kinetic model