Phase Diagram and High-Pressure Boundary of Hydrate Formation in the Ethane−Water System

2006 ◽  
Vol 110 (43) ◽  
pp. 21788-21792 ◽  
Author(s):  
Alexander V. Kurnosov ◽  
Andrey G. Ogienko ◽  
Sergei V. Goryainov ◽  
Eduard G. Larionov ◽  
Andrey Y. Manakov ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Water System ◽  
Hydrate Formation

Phase Diagram and High-Pressure Boundary of Hydrate Formation in the Carbon Dioxide−Water System

2009 ◽  
Vol 113 (20) ◽  
pp. 7257-7262 ◽  
Author(s):  
Andrej Yu. Manakov ◽  
Yuriy A. Dyadin ◽  
Andrey G. Ogienko ◽  
Alexander V. Kurnosov ◽  
Eugeny Ya. Aladko ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Diagram ◽  
High Pressure ◽  
Water System ◽  
Hydrate Formation

High-pressure / High-temperature Behavior of the Methane-Ammonia- Water System up to 3 GPa

2006 ◽  
Vol 61 (12) ◽  
pp. 1573-1576 ◽  
Author(s):  
Alexander Kurnosov ◽  
Leonid Dubrovinsky ◽  
Alexei Kuznetsov ◽  
Vladimir Dmitriev
Keyword(s):  
High Pressure ◽  
Melting Temperature ◽  
Water System ◽  
Hydrate Formation ◽  
Clathrate Hydrates ◽  
Ammonia Water ◽  
High Pressure High Temperature ◽  
In Situ Experiments ◽  
Diamond Anvil ◽  
Methane Clathrate

Melting phase relations in the methane-ammonia-water system up to 3 GPa have been obtained in a series of in situ experiments in externally heated diamond anvil cells. The melting temperature of methane clathrate hydrates increases rapidly above pressures of ~ 1.5 GPa, and does not appear to be significantly affected by the presence of ammonia. The reaction of the hydrate formation at pressures 2 - 3 GPa is kinetically impeded. Our data show that the high-pressure methane hydrate has the maximum melting temperature among the clathrate hydrates studied so far.

Clathrate Nature of the High-Pressure Tetrahydrofuran Hydrate Phase and Some New Data on the Phase Diagram of the Tetrahydrofuran−Water System at Pressures up to 3 GPa

2003 ◽  
Vol 107 (31) ◽  
pp. 7861-7866 ◽  
Author(s):  
Andrej Yu. Manakov ◽  
Sergey V. Goryainov ◽  
Alexandr V. Kurnosov ◽  
Anna Yu. Likhacheva ◽  
Yuri A. Dyadin ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Water System ◽  
Hydrate Phase

High-pressure boundary of hydrate formation in the tetrahydrofuran–water system

2000 ◽  
Vol 10 (2) ◽  
pp. 80-81 ◽  
Author(s):  
Andrei Yu. Manakov ◽  
Sergei V. Goryainov ◽  
Anna Yu. Likhacheva ◽  
Boris A. Fursenko ◽  
Yuri A. Dyadin ◽  
...  
Keyword(s):  
High Pressure ◽  
Water System ◽  
Hydrate Formation

Dynamical Immiscibility of Aqueous Carbonate Fluid in the Shortite–Water System at High-Pressure–Temperature Conditions

2021 ◽  
Vol 125 (33) ◽  
pp. 18501-18509
Author(s):  
Sergey V. Goryainov ◽  
Svetlana N. Krylova ◽  
Ulyana O. Borodina ◽  
Alexander S. Krylov
Keyword(s):  
High Pressure ◽  
Water System ◽  
Temperature Conditions

scholarly journals Crystal growth of clathrate hydrate formed with H2 + CO2 mixed gas and tetrahydropyran

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Meku Maruyama ◽  
Riku Matsuura ◽  
Ryo Ohmura
Keyword(s):  
Crystal Growth ◽  
Synthesis Gas ◽  
Water System ◽  
Hydrate Formation ◽  
Growth Dynamics ◽  
Operating Conditions ◽  
Mixed Gas ◽  
Thermodynamic Conditions ◽  
The Individual ◽  
And Storage

AbstractHydrate-based gas separation technology is applicable to the CO2 capture and storage from synthesis gas mixture generated through gasification of fuel sources including biomass. This paper reports visual observations of crystal growth dynamics and crystal morphology of hydrate formed in the H2 + CO2 + tetrahydropyran (THP) + water system with a target for developing the hydrate-based CO2 separation process design. Experiments were conducted at a temperature range of 279.5–284.9 K under the pressure of 4.9–5.3 MPa. To simulate the synthesis gas, gas composition in the gas phase was maintained around H2:CO2 = 0.6:0.4 in mole fraction. Hydrate crystals were formed and extended along the THP/water interface. After the complete coverage of the interface to shape a polycrystalline shell, hydrate crystals continued to grow further into the bulk of liquid water. The individual crystals were identified as hexagonal, tetragonal and other polygonal-shaped formations. The crystal growth rate and the crystal size varied depending on thermodynamic conditions. Implications from the obtained results for the arrangement of operating conditions at the hydrate formation-, transportation-, and dissociation processes are discussed.

scholarly journals From Slater to Mott physics by epitaxially engineering electronic correlations in oxide interfaces

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Carla Lupo ◽  
Evan Sheridan ◽  
Edoardo Fertitta ◽  
David Dubbink ◽  
Chris J. Pickard ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Charge Transfer ◽  
Lower Mantle ◽  
Random Structure ◽  
Titanium Oxides ◽  
Oxide Interfaces ◽  
Electronic Correlations ◽  
Epitaxial Strain ◽  
Magnetic Switching

AbstractUsing spin-assisted ab initio random structure searches, we explore an exhaustive quantum phase diagram of archetypal interfaced Mott insulators, i.e. lanthanum-iron and lanthanum-titanium oxides. In particular, we report that the charge transfer induced by the interfacial electronic reconstruction stabilises a high-spin ferrous Fe2+ state. We provide a pathway to control the strength of correlation in this electronic state by tuning the epitaxial strain, yielding a manifold of quantum electronic phases, i.e. Mott-Hubbard, charge transfer and Slater insulating states. Furthermore, we report that the electronic correlations are closely related to the structural oxygen octahedral rotations, whose control is able to stabilise the low-spin state of Fe2+ at low pressure previously observed only under the extreme high pressure conditions in the Earth’s lower mantle. Thus, we provide avenues for magnetic switching via THz radiations which have crucial implications for next generation of spintronics technologies.

High pressure-temperature phase diagram and equation of state of titanium

2015 ◽  
Vol 91 (13) ◽  
Author(s):  
Agnès Dewaele ◽  
Vincent Stutzmann ◽  
Johann Bouchet ◽  
François Bottin ◽  
Florent Occelli ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Equation Of State ◽  
Temperature Phase ◽  
Temperature Phase Diagram
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