Results 21 to 30 of about 9,420 (237)

Hydrogen Storage in Clathrate Hydrates [PDF]

The Journal of Physical Chemistry A, 2010
Structure, stability, and reactivity of clathrate hydrates with or without hydrogen encapsulation are studied using standard density functional calculations. Conceptual density functional theory based reactivity descriptors and the associated electronic structure principles are used to explain the hydrogen storage properties of clathrate hydrates ...
Pratim Kumar, Chattaraj, Sateesh, Bandaru, Sukanta, Mondal   +2 more
openaire   +2 more sources

Simultaneous measurement of the formation of TBAB clathrate hydrate crystal and visualization of the concentration field by using schlieren method

Nihon Kikai Gakkai ronbunshu, 2018
To improve the coefficient of performance (COP) in air-conditioning systems, the liquid-solid phase change temperature of the cold energy storage material should be approximately 10°C. Tetra-n-butyl ammonium bromide (TBAB) clathrate hydrate possesses the
Tadafumi DAITOKU, Takashi TSURUDA
doaj   +1 more source

Clathrate hydrates in interstellar environment [PDF]

Proceedings of the National Academy of Sciences, 2019
SignificanceFormation of clathrate hydrate (CH) requires high pressures and moderate temperatures, which enable their existence in marine sediments and the permafrost region of earth. The presence of CHs in interstellar medium (ISM) is still in question due to the extreme high vacuum and ultracold conditions present there.
Ghosh, Jyotirmoy, Methikkalam, Rabin Rajan J., Bhuin, Radha Gobinda, Ragupathy, Gopi, Choudhary, Nilesh, Kumar, Rajnish, Pradeep, Thalappil   +6 more
openaire   +2 more sources

Methane hydrate: shifting the coexistence temperature to higher temperatures with an external electric field [PDF]

, 2016
In the present work, we used molecular dynamic simulations of the equilibrium NPT ensemble to examine the effect of an external electric field on the three-phase coexistence temperature of methane gas, liquid water and methane hydrate.
Franco-Urquiza, Edgar, Lopez Lemus, J., Luis, D. P., Maspoch Rulduà, Mª Lluïsa, Saint Martin, H.   +4 more
core   +2 more sources

Effect of nanoparticles on the nucleation and agglomeration rates of hydrate growth using THF–water clathrates

Petroleum Science, 2019
Four types of nanoparticles, amorphous carbon, iron III oxide, SiO2, and amino-coated SiO2, were tested to determine changes in tetrahydrofuran–water (THF–water) clathrate hydrate nucleation and agglomeration. Rates were experimentally found to determine
Syed Y. Nahri, James L. Nielsen, Yuanhang Chen   +2 more
doaj   +1 more source

Structure-driven CO2 selectivity and gas capacity of ionic clathrate hydrates

Scientific Reports, 2017
Ionic clathrate hydrates can selectively capture small gas molecules such as CO2, N2, CH4 and H2. We investigated CO2 + N2 mixed gas separation properties of ionic clathrate hydrates formed with tetra-n-butylammonium bromide (TBAB), tetra-n-butylammonium
Hidenori Hashimoto, Tsutomu Yamaguchi, Hiroyuki Ozeki, Sanehiro Muromachi   +3 more
doaj   +1 more source

Evidence of fast pebble growth near condensation fronts in the HL Tau protoplanetary disk [PDF]

, 2015
Water and simple organic molecular ices dominate the mass of solid materials available for planetesimal and planet formation beyond the water snow line.
Bergin, Edwin A., Blake, Geoffrey A., Zhang, Ke   +2 more
core   +3 more sources

Clathration of Volatiles in the Solar Nebula and Implications for the Origin of Titan's atmosphere [PDF]

, 2008
We describe a scenario of Titan's formation matching the constraints imposed by its current atmospheric composition. Assuming that the abundances of all elements, including oxygen, are solar in the outer nebula, we show that the icy planetesimals were ...
Alibert, Yann, Ballenegger, Vincent, Cordier, Daniel, Ellinger, Yves, Lunine, Jonathan I., Marboeuf, Ulysse, Mousis, Olivier, Pasek, Matthew, Pauzat, Francoise, Picaud, Sylvain, Thomas, Caroline   +10 more
core   +3 more sources

Influence of N₂ on Formation Conditions and Guest Distribution of Mixed CO₂ + CH₄ Gas Hydrates

Molecules, 2018
In this contribution, a method based on a solid solution theory of clathrate hydrate for multiple cage occupancy, host lattice relaxation, and guest-guest interactions is presented to estimate hydrate formation conditions of binary and ternary gas ...
Vladimir R. Belosludov, Yulia Yu. Bozhko, Oleg S. Subbotin, Rodion V. Belosludov, Ravil K. Zhdanov, Kirill V. Gets, Yoshiyuki Kawazoe   +6 more
doaj   +1 more source

HTR: An ultra-high speed algorithm for cage recognition of clathrate hydrates

Nanotechnology Reviews, 2022
Clathrate hydrates find diverse significant applications including but not limited to future energy resources, gas storage and transport, gas separation, water desalination, and refrigeration.
Liu Yisi, Xu Ke, Xu Yihua, Liu Jinjie, Wu Jianyang, Zhang Zhisen   +5 more
doaj   +1 more source