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Dynamics of trimethylene oxide in a structure II clathrate hydrate

  • C. Y. Jones EMAIL logo and I. Peral
Published/Copyright: March 28, 2015
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American Mineralogist
From the journal American Mineralogist Volume 89 Issue 8-9

Abstract

Neutron scattering has been used to study the dynamics of trimethylene oxide (TMO) in a structure II clathrate hydrate. Two regimes of guest dynamics have been identified in the range 10 K to 100 K. Below 50 K, the hydrogen atoms on TMO execute jumps between nonequivalent sites with a jump distance of 2.1 Å, consistent with a model of rotations of 90° about the C2v molecular axis between sites with unequal occupancy probabilities, and corresponding to an energy difference between sites of ∼7 meV. Above 50 K, a second dynamical regime appears in which rotational motions of H occur about both the C2v axis and a second axis perpendicular to the plane of the molecule. An increase in the activation energy barrier to the motion that appears to accompany the onset of multi-axis motion could be a result of the additional high-energy rotations taking place within more restricted crosssections of the cage.

Received: 2004-9-30
Accepted: 2004-4-25
Published Online: 2015-3-28
Published in Print: 2004-8-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Introductory overview: Hydrate knowledge development
  2. Scanning Electron Microscopy investigations of laboratory-grown gas clathrate hydrates formed from melting ice, and comparison to natural hydrates
  3. Dynamics of trimethylene oxide in a structure II clathrate hydrate
  4. The stability of methane hydrates in highly concentrated electrolyte solutions by differential scanning calorimetry and theoretical computation
  5. The effect of elevated methane pressure on methane hydrate dissociation
  6. Methane hydrate formation in partially water-saturated Ottawa sand
  7. Methanol—inhibitor or promoter of the formation of gas hydrates from deuterated ice?
  8. Investigating the performance of clathrate hydrate inhibitors using in situ Raman spectroscopy and differential scanning calorimetry
  9. Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate
  10. Experimental studies on the formation of porous gas hydrates
  11. Investigation of jet breakup and droplet size distribution of liquid CO2and water systems—implications for CO2hydrate formation for ocean carbon sequestration
  12. Measurement of clathrate hydrate precipitation from CO2solution by a nondestructive method
  13. Influence of water thermal history and overpressure on CO2-hydrate nucleation and morphology
  14. Growth-controlling processes of CO2gas hydrates
  15. Thermodynamic prediction of clathrate hydrate dissociation conditions in mesoporous media
  16. Modeling dynamic marine gas hydrate systems
  17. Late-stage, high-temperature processesing in the Allende meteorite: Record from Ca,Fe-rich silicate rims around dark inclusions
  18. Partitioning of Sr, Ba, Rb, Y, and LREE between alkali feldspar and peraluminous silicic magma
  19. Nondestructive three-dimensional element-concentration mapping of a Cs-doped partially molten granite by X-ray computed tomography using synchrotron radiation
  20. A theoretical study of structural factors correlated with 23Na NMR parameters
  21. Metamorphic formation of Sr-apatite and Sr-bearing monazite in a high-pressure rock from the Bohemian Massif
  22. Ultra-deep origin of garnet peridotite from the North Qaidam ultrahigh-pressure belt, Northern Tibetan Plateau, NW China
  23. Letter. Novel high-pressure behavior in chlorite: A synchrotron XRD study of clinochlore to 27 GPa
  24. Letter. Periodic precipitation pattern formation in hydrothermally treated metamict zircon
  25. A high pressure X-ray diffraction study of aragonite and the post-aragonite phase transition in CaCO3
https://doi.org/10.2138/am-2004-8-903

Articles in the same Issue

  1. Introductory overview: Hydrate knowledge development
  2. Scanning Electron Microscopy investigations of laboratory-grown gas clathrate hydrates formed from melting ice, and comparison to natural hydrates
  3. Dynamics of trimethylene oxide in a structure II clathrate hydrate
  4. The stability of methane hydrates in highly concentrated electrolyte solutions by differential scanning calorimetry and theoretical computation
  5. The effect of elevated methane pressure on methane hydrate dissociation
  6. Methane hydrate formation in partially water-saturated Ottawa sand
  7. Methanol—inhibitor or promoter of the formation of gas hydrates from deuterated ice?
  8. Investigating the performance of clathrate hydrate inhibitors using in situ Raman spectroscopy and differential scanning calorimetry
  9. Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate
  10. Experimental studies on the formation of porous gas hydrates
  11. Investigation of jet breakup and droplet size distribution of liquid CO2and water systems—implications for CO2hydrate formation for ocean carbon sequestration
  12. Measurement of clathrate hydrate precipitation from CO2solution by a nondestructive method
  13. Influence of water thermal history and overpressure on CO2-hydrate nucleation and morphology
  14. Growth-controlling processes of CO2gas hydrates
  15. Thermodynamic prediction of clathrate hydrate dissociation conditions in mesoporous media
  16. Modeling dynamic marine gas hydrate systems
  17. Late-stage, high-temperature processesing in the Allende meteorite: Record from Ca,Fe-rich silicate rims around dark inclusions
  18. Partitioning of Sr, Ba, Rb, Y, and LREE between alkali feldspar and peraluminous silicic magma
  19. Nondestructive three-dimensional element-concentration mapping of a Cs-doped partially molten granite by X-ray computed tomography using synchrotron radiation
  20. A theoretical study of structural factors correlated with 23Na NMR parameters
  21. Metamorphic formation of Sr-apatite and Sr-bearing monazite in a high-pressure rock from the Bohemian Massif
  22. Ultra-deep origin of garnet peridotite from the North Qaidam ultrahigh-pressure belt, Northern Tibetan Plateau, NW China
  23. Letter. Novel high-pressure behavior in chlorite: A synchrotron XRD study of clinochlore to 27 GPa
  24. Letter. Periodic precipitation pattern formation in hydrothermally treated metamict zircon
  25. A high pressure X-ray diffraction study of aragonite and the post-aragonite phase transition in CaCO3
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