Effect of surfactant crowding on clathrate hydrate growth

Ravesh, Randeep; Ansari, Ayaj Ahamad; Panigrahi, Pradipta Kumar; Das, Malay Kumar

doi:10.1080/01932691.2021.1915157

Cited by 8 publications

(3 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the removal of additives from water after energy recovery remains an operational problem. Nevertheless, chemical additives are critical for developing hydrate-based technologies because these additives can lead to hydrate promotion or inhibition behaviors …”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, chemical additives are critical for developing hydrate-based technologies because these additives can lead to hydrate promotion or inhibition behaviors. 18 A few studies have shown that passive techniques such as electronucleation and metallic surfaces can promote the nucleation of hydrates. Acharya et al 19 demonstrated that aluminum metal reduces the induction time of hydrates, whereas copper and stainless steel surfaces do not contribute to the nucleation of hydrates.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

Ravesh,

Ansari,

Panigrahi

et al. 2024

Langmuir

Self Cite

View full text Add to dashboard Cite

Rapid nucleation of tetrahydrofuran (THF) hydrate is essential for developing a THF hydrate-based cold storage technology. Earlier works have hypothesized the role of aluminum complexes in initiating the nucleation of clathrate hydrates using aluminum metal electrodes and substrates. This study investigates if the nucleation promotional effect of hydrate can be achieved using the aluminum salt, AlCl3, due to the formation of aluminum aqua complexes in water. Metal chlorides NaCl and MgCl2 are also utilized to evaluate the effect of cation type in initiating nucleation, i.e., the effect of charge/radius ratio. The induction time is measured in a stirred reactor at various subcoolings and concentrations of 0.05, 0.1, 0.5, 1, and 2 wt %. The nucleation time is studied in two reactor configurations based on the nature of salt introduction in the THF solution, i.e., salt premixed in solution and salt injected inside the solution. The sudden rise in the reactor temperature due to hydrate formation is used as an indicator of hydrate formation. Results indicate that AlCl3 promotes hydrate nucleation as AlCl3 reduces induction time by 92.2% at 0.05 wt % concentration compared with water. Nearly instantaneous nucleation is also achieved by directly injecting AlCl3. MgCl2 and NaCl do not show a similar effect on induction time as AlCl3. The pH and Raman spectra measurements with and without salts are carried out to explain the effect of cations on the THF–water solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

Ravesh,

Ansari,

Panigrahi

et al. 2024

Langmuir

Self Cite

View full text Add to dashboard Cite

show abstract

“…The commercial implementation of gas hydrate technology remains stalled due to the slow formation rate and low gas storage capacity of gas hydrates. Several strategies have been utilized to enhance the hydrate formation kinetics, such as surfactants [13,14] and nanoparticles [15]. Zhou et al [16] reported that the induction time was reduced by 80.8 % and gas consumption was increased by 12.8 % in the presence of graphite nanoparticles compared to pure water.…”

Section: Introductionmentioning

confidence: 99%

CO₂ Hydrate Formation Kinetics in the Presence of a Layered Double Hydroxide Nanofluid

et al. 2023

Self Cite

View full text Add to dashboard Cite

The effects of a hybrid nanofluid (Cu-Al layered double hydroxide (LDH)) on the CO 2 hydrate formation kinetics was investigated at three different nanofluid concentrations (0.25-1.0 wt %). The Cu-Al LDH nanofluid was prepared using a one-step co-precipitation technique. The addition of the LDH nanofluid reduces the induction time and enhances the hydrate formation kinetics. The maximum reduction in the induction time (by 91.08 %) was observed at the optimal nanofluid concentration of 0.5 wt %, compared to water. A chemical affinity model was implemented to predict the experimental data for CO 2 hydrate formation in the presence of the different LDH nanofluid concentrations. An artificial neural network-based Levenberg-Marquardt model predicts the experimental data with higher accuracy than the scaled conjugate gradient model. The results indicate a strong dependency of the hydrate formation kinetics on the LDH nanofluid concentrations.

show abstract

CO2 Hydrate Formation Kinetics in the Presence of TBAB

Ansari,

Ravesh,

Panigrahi

et al. 2024

Green Energy and Technology

View full text Add to dashboard Cite

Effect of surfactant crowding on clathrate hydrate growth

Cited by 8 publications

References 48 publications

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

CO₂ Hydrate Formation Kinetics in the Presence of a Layered Double Hydroxide Nanofluid

CO2 Hydrate Formation Kinetics in the Presence of TBAB

Contact Info

Product

Resources

About

Effect of surfactant crowding on clathrate hydrate growth

Cited by 8 publications

References 48 publications

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

Can Aluminum Cations Promote Nucleation for THF Hydrate Growth?

CO2 Hydrate Formation Kinetics in the Presence of a Layered Double Hydroxide Nanofluid

CO2 Hydrate Formation Kinetics in the Presence of TBAB

Contact Info

Product

Resources

About

CO₂ Hydrate Formation Kinetics in the Presence of a Layered Double Hydroxide Nanofluid