Noble gas encapsulation: clathrate hydrates and their HF doped analogues

2014 ◽  
Vol 16 (33) ◽  
pp. 17943-17954 ◽  
Author(s):  
Sukanta Mondal ◽  
Pratim Kumar Chattaraj
Keyword(s):  
Noble Gas ◽  
Clathrate Hydrates ◽  
Gas Encapsulation

The noble gas encapsulating ability of HF doped 512 and 51268 clathrate hydrates increases with the increase in the size of the noble gas atom and decrease in the hydrate cage radius.

scholarly journals Exploring High-Pressure Transformations in Low-Z (H2, Ne) Hydrates at Low Temperatures

Crystals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 9
Author(s):  
Paulo H. B. Brant Carvalho ◽  
Amber Mace ◽  
Inna Martha Nangoi ◽  
Alexandre A. Leitão ◽  
Chris A. Tulk ◽  
...  
Keyword(s):  
High Pressure ◽  
Powder Diffraction ◽  
Low Temperatures ◽  
General Trend ◽  
Noble Gas ◽  
Neutron Powder Diffraction ◽  
Clathrate Hydrates ◽  
Structural Behavior ◽  
Approximate Composition ◽  
Cubic Structure

The high pressure structural behavior of H2 and Ne clathrate hydrates with approximate composition H2/Ne·~4H2O and featuring cubic structure II (CS-II) was investigated by neutron powder diffraction using the deuterated analogues at ~95 K. CS-II hydrogen hydrate transforms gradually to isocompositional C1 phase (filled ice II) at around 1.1 GPa but may be metastably retained up to 2.2 GPa. Above 3 GPa a gradual decomposition into C2 phase (H2·H2O, filled ice Ic) and ice VIII’ takes place. Upon heating to 200 K the CS-II to C1 transition completes instantly whereas C1 decomposition appears sluggish also at 200 K. C1 was observed metastably up to 8 GPa. At 95 K C1 and C2 hydrogen hydrate can be retained below 1 GPa and yield ice II and ice Ic, respectively, upon complete release of pressure. In contrast, CS-II neon hydrate undergoes pressure-induced amorphization at 1.9 GPa, thus following the general trend for noble gas clathrate hydrates. Upon heating to 200 K amorphous Ne hydrate crystallizes as a mixture of previously unreported C2 hydrate and ice VIII’.

scholarly journals Pressure-induced amorphization of noble gas clathrate hydrates

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
Paulo H. B. Brant Carvalho ◽  
Amber Mace ◽  
Ove Andersson ◽  
Chris A. Tulk ◽  
Jamie Molaison ◽  
...  
Keyword(s):  
Noble Gas ◽  
Clathrate Hydrates

Noble gas encapsulation into carbon nanotubes: Predictions from analytical model and DFT studies

2014 ◽  
Vol 141 (18) ◽  
pp. 184304 ◽  
Author(s):  
Sree Ganesh Balasubramani ◽  
Devendra Singh ◽  
R. S. Swathi
Keyword(s):  
Carbon Nanotubes ◽  
Analytical Model ◽  
Noble Gas ◽  
Dft Studies ◽  
Gas Encapsulation

Interactions of noble gas atoms. Processes due to elastic scattering

1989 ◽  
Vol 14 (5) ◽  
pp. 467-604 ◽  
Author(s):  
A.Z. Devdariani ◽  
A.L. Zagrebin ◽  
K.B. Blagoev
Keyword(s):  
Elastic Scattering ◽  
Noble Gas
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