Roles of amino acid hydrophobicity on methane-THF hydrates in the context of storage and stability

Jeenmuang, Kan; Pornaroontham, Phuwadej; Inkong, Katipot; Bhattacharjee, Gaurav; Kulprathipanja, Santi; Yin, Zhenyuan; Rangsunvigit, Pramoch

doi:10.1016/j.cej.2022.140326

Cited by 21 publications

(7 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The t 90 of the three systems were 39.05, 49.36, and 35 min, respectively, which were shorter than that in the pure water system even at 200 rpm as shown in Figure . Similar phenomena were also found in the work by some researchers. , However, the minimum value of concentration to be effective was 0.03 wt % which was a little lower than ours. It should be noted that the growth rate of methane hydrate at the concentration of 0.05 wt %, which was quite close to 0.03 wt %, was also investigated in our work, and it exhibited almost equivalent performance on the growth of methane hydrate with that of the 0.1 wt % l -Trp system.…”

Section: Resultssupporting

confidence: 92%

Ultrarapid Formation and Direct Observation of Methane Hydrate in the Presence of l-Tryptophan

Shen

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Environmentally friendly amino acids are promising candidates for the application of hydrate-based gas solidification technology and others. The formation kinetics and macroscopic morphology of methane hydrate in the presence of l-tryptophan were experimentally studied by adopting an isothermal and isochoric method. The experimental results showed that l-tryptophan could not increase the nucleation rates of methane hydrates, but it had better kinetic promotion effects on the growth rates of methane hydrate than sodium dodecyl sulfate, and the minimum concentration required to be effective was 0.1 wt %. The promotion effects almost remained unchanged with the increase of the concentration of l-tryptophan, even at a stirring rate of 200 rpm. For a 0.1 wt % l-tryptophan solution, the ultimate gas consumption was increased by 46.52% and t 90 was decreased by 33.67% when the initial experimental pressure was elevated from 7 to 11 MPa. Both ultimate gas consumption and t 90 were increased when the temperature was increased from 273.65 to 277.15 K. From direct top view observation, methane hydrate tended to first nucleate at the gas–liquid–solid triple phase lines, then stretched like a thin film along the surface of the solution. The hydrate continued to form at the edge of the film and even climbed on to the inner wall of the container. The solution under the hydrate film was continuously sucked, and the hydrate film could even be cracked by interfacial forces at higher pressure. When the concentration of l-tryptophan was greater than 0.5 wt %, hydrates cropped out from several sites of the hydrate film and continued to grow upward. The formed hydrates were quite loose and porous which provided capillary forces and channels for the upward transportation of the solution.

show abstract

Section: Resultssupporting

confidence: 92%

Ultrarapid Formation and Direct Observation of Methane Hydrate in the Presence of l-Tryptophan

Shen

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Despite sI methane hydrate being stored at 253 K, much lower than the 268 K of sII hydrates, gas evolution of about 51% was observed for the sI hydrate structure in comparison to just 7% gas evolution from sII hydrate over a 10 day period. Jeenmuang et al studied the stability of mixed hydrogen/THF hydrate pellet synthesized in the presence of hydrophobic amino acids–tryptophan (0.03 wt %) stored at 283.2 K (much higher than equilibrium temperature of sII hydrates) and atmospheric pressure. Excellent stability was observed for about 30 days with loss of about 12% of the total methane stored, with the maximum loss occurring during the first day owing to intrinsic thermodynamics.…”

Section: Methane Storage In Hydratesmentioning

confidence: 99%

Energy Storage in Hydrates: Status, Recent Trends, and Future Prospects

Veluswamy

2024

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

“…In order to overcome the kinetic challenges in hydrate-based gas storage applications, mechanical techniques have been extensively utilized. [88][89][90]163,164 These mechanical approaches include stirring, bubbling, and spraying, all of which serve to physically increase the gas-liquid interface within the hydrate formation system. This, in turn, increases the nucleation probability and mass transfer of each component in the system.…”

Section: Kinetic Promotion With Mechanical Techniquesmentioning

confidence: 99%

“…[85][86][87] Traditionally, mechanical stirrers are used to mix water and gas, significantly accelerating hydrate formation compared to unstirred systems. [88][89][90] However, the necessity for continuous mixing of the internal components a MgH 2 was compared as a representative of metal hydride. b Methylcyclohexane was compared as a representative of liquid organic hydrogen carrier.…”

Section: Introductionmentioning

confidence: 99%

Perspectives on facilitating natural gas and hydrogen storage in clathrate hydrates under a static system

Lee,

Kim,

Lee

et al. 2024

Green Chem.

View full text Add to dashboard Cite

show abstract

Roles of amino acid hydrophobicity on methane-THF hydrates in the context of storage and stability

Cited by 21 publications

References 48 publications

Ultrarapid Formation and Direct Observation of Methane Hydrate in the Presence of l-Tryptophan

Ultrarapid Formation and Direct Observation of Methane Hydrate in the Presence of l-Tryptophan

Energy Storage in Hydrates: Status, Recent Trends, and Future Prospects

Perspectives on facilitating natural gas and hydrogen storage in clathrate hydrates under a static system

Contact Info

Product

Resources

About