Some features of the dual-temperature method of separation of hydrogen isotopes

1963 ◽  
Vol 60 ◽  
pp. 115-123
Author(s):  
S. E. Vaisberg ◽  
Ya. M. Varshavsky
Keyword(s):  
Hydrogen Isotopes ◽  
Temperature Method

ASSESSING NATAL REGIONS FOR MIGRATORY JUVENILE ACCIPITERS USING HYDROGEN ISOTOPES

2017 ◽  
Author(s):  
Kaitlin M. Sommer ◽  
◽  
Brooke E. Crowley ◽  
Bruce Haak
Keyword(s):  
Hydrogen Isotopes

scholarly journals Phase Behaviour of Methane Hydrates in Confined Media

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 201
Author(s):  
Hao Bian ◽  
Lu Ai ◽  
Klaus Hellgardt ◽  
Geoffrey C. Maitland ◽  
Jerry Y. Y. Heng
Keyword(s):  
Phase Behaviour ◽  
Methane Hydrates ◽  
Scanning Calorimetry ◽  
Macroporous Silica ◽  
Interfacial Energies ◽  
Temperature Method ◽  
Hydrate Phase ◽  
Dissociation Temperature ◽  
Confined Media ◽  
Decomposition Behaviour

In a study designed to investigate the melting behaviour of natural gas hydrates which are usually formed in porous mineral sediments rather than in bulk, hydrate phase equilibria for binary methane and water mixtures were studied using high-pressure differential scanning calorimetry in mesoporous and macroporous silica particles having controlled pore sizes ranging from 8.5 nm to 195.7 nm. A dynamic oscillating temperature method was used to form methane hydrates reproducibly and then determine their decomposition behaviour—melting points and enthalpies of melting. Significant decreases in dissociation temperature were observed as the pore size decreased (over 6 K for 8.5 nm pores). This behaviour is consistent with the Gibbs–Thomson equation, which was used to determine hydrate–water interfacial energies. The melting data up to 50 MPa indicated a strong, essentially logarithmic, dependence on pressure, which here has been ascribed to the pressure dependence of the interfacial energy in the confined media. An empirical modification of the Gibbs–Thomson equation is proposed to include this effect.

Experimental setup and pre-experiment issues for multi-component hydrogen isotopes permeation through metals, in non-steady-state

2020 ◽  
Vol 157 ◽  
pp. 111677
Author(s):  
Nicolae Bidica ◽  
Nicolae Sofilca ◽  
Gheorghe Popescu ◽  
Bogdan Monea ◽  
Carmen Moraru
Keyword(s):  
Steady State ◽  
Hydrogen Isotopes ◽  
Experimental Setup

Reactor studies of hydrogen isotopes interaction with lithium CPS using dynamic sorption technique

2019 ◽  
Vol 146 ◽  
pp. 402-405 ◽  
Author(s):  
Irina Tazhibayeva ◽  
Yuriy Ponkratov ◽  
Timur Kulsartov ◽  
Yuriy Gordienko ◽  
Zhanna Zaurbekova ◽  
...  
Keyword(s):  
Hydrogen Isotopes ◽  
Dynamic Sorption

scholarly journals Fractionation of carbon and hydrogen isotopes of TSR-altered gas products under closed system pyrolysis

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Quanyou Liu ◽  
Weilong Peng ◽  
Qingqiang Meng ◽  
Dongya Zhu ◽  
Zhijun Jin ◽  
...  
Keyword(s):  
Closed System ◽  
Hydrogen Isotopes ◽  
Gas Products
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