Effect of Electric Field on Gas Hydrate Nucleation Kinetics: Evidence for the Enhanced Kinetics of Hydrate Nucleation by Negatively Charged Clay Surfaces

Cited 1 time in webofscience Cited 0 time in scopus
  • Hit : 151
  • Download : 0
Natural gas hydrates are found widely in oceanic clay-rich sediments, where clay-water interactions have a profound effect on the formation behavior of gas hydrates. However, it remains unclear why and how natural gas hydrates are formed in clay-rich sediments in spite of factors that limit gas hydrate formation, such as small pore size and high salinity. Herein, we show that polarized water molecules on clay surfaces clearly promote gas hydrate nucleation kinetics. When water molecules were polarized with an electric field of 10(4) V/m, gas hydrate nucleation occurred significantly faster with an induction time reduced by 5.8 times. Further, the presence of strongly polarized water layers at the water-gas interface hindered gas uptake and thus hydrate formation, when the electric field was applied prior to gas dissolution. Our findings expand our understanding of the formation habits of naturally occurring gas hydrates in clay-rich sedimentary deposits and provide insights into gas production from natural hydrate deposits.
Publisher
AMER CHEMICAL SOC
Issue Date
2018-03
Language
English
Article Type
Article
Keywords

CARBON-DIOXIDE HYDRATE; METHANE HYDRATE; CO2 HYDRATE; ELECTROSTATIC-FIELD; WATER; SEA; SUSPENSIONS; SEDIMENTS; ENERGY; SILICA

Citation

ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.52, no.5, pp.3267 - 3274

ISSN
0013-936X
DOI
10.1021/acs.est.7b05477
URI
http://hdl.handle.net/10203/241317
Appears in Collection
CE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 1 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0