Inhibited phase behavior of gas hydrates in graphene oxide: Influences of surface and geometric constraints

Daeok Kim, Daewoo Kim, Hyung Kyu Lim, Jiwon Jeon, Hyungjun Kim, Hee Tae Jung, Huen Lee

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Porous materials have provided us unprecedented opportunities to develop emerging technologies such as molecular storage systems and separation mechanisms. Pores have also been used as supports to contain gas hydrates for the application in gas treatments. Necessarily, an exact understanding of the properties of gas hydrates in confining pores is important. Here, we investigated the formation of CO2, CH4 and N2 hydrates in non-interlamellar voids in graphene oxide (GO), and their thermodynamic behaviors. For that, low temperature XRD and P-T traces were conducted to analyze the water structure and confirm hydrate formation, respectively, in GO after its exposure to gaseous molecules. Confinement and strong interaction of water with the hydrophilic surface of graphene oxide reduce water activity, which leads to the inhibited phase behavior of gas hydrates.

Original languageEnglish
Pages (from-to)22717-22722
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number41
DOIs
Publication statusPublished - 2014 Oct 1

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Gas hydrates
Graphite
Phase behavior
hydrates
Oxides
graphene
Hydrates
oxides
Water
gases
Porous materials
water
porosity
Gases
Thermodynamics
porous materials
Molecules
confining
voids
emerging

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Kim, Daeok ; Kim, Daewoo ; Lim, Hyung Kyu ; Jeon, Jiwon ; Kim, Hyungjun ; Jung, Hee Tae ; Lee, Huen. / Inhibited phase behavior of gas hydrates in graphene oxide : Influences of surface and geometric constraints. In: Physical Chemistry Chemical Physics. 2014 ; Vol. 16, No. 41. pp. 22717-22722.
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Inhibited phase behavior of gas hydrates in graphene oxide : Influences of surface and geometric constraints. / Kim, Daeok; Kim, Daewoo; Lim, Hyung Kyu; Jeon, Jiwon; Kim, Hyungjun; Jung, Hee Tae; Lee, Huen.

In: Physical Chemistry Chemical Physics, Vol. 16, No. 41, 01.10.2014, p. 22717-22722.

Research output: Contribution to journalArticle

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AU - Kim, Daeok

AU - Kim, Daewoo

AU - Lim, Hyung Kyu

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AU - Kim, Hyungjun

AU - Jung, Hee Tae

AU - Lee, Huen

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