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Updated: Jan 27, 2026
06:31
Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
Published on: March 18, 2020
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How Do Surfactants Control the Agglomeration of Clathrate Hydrates?
Pavithra M Naullage1, Andressa A Bertolazzo1,2, Valeria Molinero1
1Department of Chemistry, The University of Utah, Salt Lake City, Utah 84112-0850, United States.
ACS Central Science
|April 3, 2019
Summary
Surfactants prevent clathrate hydrate agglomeration in oil pipelines. Molecular simulations reveal surfactant length, film density, and binding strength, not just contact angle, are key to effective antiagglomerant performance.
Area of Science:
- Petroleum Engineering
- Materials Science
- Physical Chemistry
Background:
- Clathrate hydrates form in oil and gas pipelines, causing blockages.
- Agglomerated clathrates pose safety, economic, and environmental risks.
- Surfactants are used to inhibit clathrate particle aggregation.
Purpose of the Study:
- Investigate surfactant film structure and dynamics at the clathrate-oil interface.
- Determine the impact of surfactant films on contact angle and droplet coalescence.
- Identify key molecular factors governing surfactant antiagglomerant performance.
Main Methods:
- Molecular dynamic simulations of surfactant-clathrate-oil-water systems.
- Analysis of interfacial film structure, dynamics, and binding.
- Calculation of water contact angles at the clathrate-oil interface.
Main Results:
- Simulations confirm oil-wet and super-hydrophobic clathrate-oil interfaces.
- A large water contact angle alone is insufficient to predict antiagglomerant efficacy.
- Surfactant molecular length, film density, and surface binding strength are critical.
Conclusions:
- Effective clathrate antiagglomerants require optimized molecular design.
- Surfactant film properties, not just hydrophobicity, dictate performance.
- Provides a molecular basis for designing superior clathrate hydrate inhibitors.
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