Nucleation of clathrate hydrates at low temperatures is constrained by very long induction (wait) times, which can range from hours to days. Electronucleation (application of an electrical potential difference across the hydrate forming solution) can significantly reduce the induction time. This work studies the use of porous open-cell foams of various materials as electronucleation electrodes. Experiments with tetrahydrofuran (THF) hydrates reveal that aluminum and carbon foam electrodes can enable voltage-dependent nucleation, with induction times dependent on the ionization tendency of the foam material. Furthermore, we observe a non-trivial dependence of the electronucleation parameters such as induction time and the recalescence temperature on the water:THF molar ratio. This study further corroborates previously developed hypotheses which associated rapid hydrate nucleation with the formation of metal-ion coordination compounds. Overall, this work studies various aspects of electronucleation with aluminum and carbon foams.
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ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels
June 10–13, 2018
Dubrovnik, Croatia
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5119-7
PROCEEDINGS PAPER
Mechanisms Underlying Foam-Based Electronucleation of Hydrates Available to Purchase
Palash V. Acharya,
Palash V. Acharya
University of Texas at Austin, Austin, TX
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Denise Lin,
Denise Lin
University of Texas at Austin, Austin, TX
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Vaibhav Bahadur
Vaibhav Bahadur
University of Texas at Austin, Austin, TX
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Palash V. Acharya
University of Texas at Austin, Austin, TX
Denise Lin
University of Texas at Austin, Austin, TX
Vaibhav Bahadur
University of Texas at Austin, Austin, TX
Paper No:
ICNMM2018-7721, V001T04A004; 5 pages
Published Online:
August 23, 2018
Citation
Acharya, PV, Lin, D, & Bahadur, V. "Mechanisms Underlying Foam-Based Electronucleation of Hydrates." Proceedings of the ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2018 16th International Conference on Nanochannels, Microchannels, and Minichannels. Dubrovnik, Croatia. June 10–13, 2018. V001T04A004. ASME. https://doi.org/10.1115/ICNMM2018-7721
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