Intermolecular Forces in Clathrate Hydrate Related Processes

Author(s):  
Remi-Erempagamo T. Meindinyo ◽  
Thor Martin Svartås

The thermodynamics and kinetics of clathrate hydrate formation processes are topics of high scientific interest, especially in the petroleum industry. Researchers have made efforts at understanding the underlying processes that explicate the macroscopic observations from experiments and other research methods of gas hydrate formation. To achieve this, they have employed theories founded upon force related intermolecular interactions. Some of the theories and concepts employed include hydrogen bonding, the Leonard Jones force principle, and steric interactions. This paper gives a brief review of how these intermolecular interaction principles have been understood, and used as tools, in explaining the inaccessible microscopic processes, that characterize clathrate hydrate formation. It touches upon nucleation, growth, and inhibition processes.

2018 ◽  
Vol 55 ◽  
pp. 452-465 ◽  
Author(s):  
Omar Nashed ◽  
Behzad Partoon ◽  
Bhajan Lal ◽  
Khalik M. Sabil ◽  
Azmi Mohd Shariff

Processes ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 124 ◽  
Author(s):  
Pandey ◽  
Daas ◽  
Solms

In this study, the kinetics of flue gas hydrate formation in bulk water in the presence of selected amino acids and surfactants are investigated. Four amino acids (3000 ppm) are selected based on different hydropathy index. Constant-ramping and isothermal experiments at 120 bar pressure and 1 °C temperature are carried out to compare their hydrate promotion capabilities with surfactant sodium dodecyl sulfate (SDS) (500–3000 ppm) and water. Based on experimental results, we report the correlation between hydrate promotion capability of amino acids and their hydrophobicity. Hydrophobic amino acids show stronger flue gas hydrate promotion capability than water and hydrophilic amino acids. We discuss the controlling mechanisms to differentiate between promoters and inhibitors’ roles among the amino acids. Between 2000–3000 ppm concentrations, hydrophobic amino acids have near similar promotion capabilities as SDS. This research highlights the potential use of amino acids as promoters or inhibitors for various applications.


Fuel ◽  
2017 ◽  
Vol 209 ◽  
pp. 85-95 ◽  
Author(s):  
WuChang Wang ◽  
Kai Jiang ◽  
YuXing Li ◽  
ZhengZhuo Shi ◽  
GuangChun Song ◽  
...  

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