Angelo Lucia

Jae W. Lee

Costas Tsouris

Advances in Gas Hydrate Thermodynamics and Transport Properties

new method implement molecular dynam simul calcul refer properti simpl gas hydrat has been propos the guest molecul affect interact between adjac water molecul distort hydrat lattic which requir divers valu refer properti differ gas hydrat perform simul valid experiment data determin chemic potenti differ between water theoret empti caviti refer state structur type gas hydrat simul have also been use observ variat hydrat unit cell volum temperatur all simul were perform use tip4p water molecul refer temperatur pressur condit the valu were close experiment valu obtain leehold model consid lattic distort

Krishnadeo Jatkar

Sangyong Lee

Determination of Reference Chemical Potential Using Molecular Dynamics Simulations

experiment studi dissoci methan hydrat hotwat inject depressur carri out nation institut advanc industrial scienc technolog aist these experi help understand some import aspect behavior how temperatur pressur permeabl chang dure dissoci gas product order understand experiment result model dissoci porous media design implement numer simul model treat phase twocompon system repres pore space occupi separ compon absolut permeabl relat permeabl were formul function satur poros sand grain diamet introduc numer model using develop numer simul attempt histori match laboratoryscal experi dissoci process found numer simul abl reproduc temperatur chang permeabl characterist gas product behavior associ both format dissoci

Yasuhide Sakamoto

Takeshi Komai

Kuniyuki Miyazaki

Norio Tenma

Tsutomu Yamaguchi

George Zyvoloski

Laboratory-Scale Experiments of the Methane Hydrate Dissociation Process in a Porous Media and Numerical Study for the Estimation of Permeability in Methane Hydrate Reservoir

propos sever physic chemic caus support seismic result which find presenc bottom simul reflector bsr site 1144 site 1148 dongsha region north south china sea site 1144 accord geotherm gradient bottom stabil zone conduct mode agreement bsr site 1148 howev stabil zone conduct mode smaller than natur gas presenc zone predict bsr propos three caus mix convect conduct thermal flow mode multipl composit natur gas overpressur deep sediment explain bsr presenc gas hydrat presenc further our numer simul result suggest yet anoth reason presenc bsr site 1144 site 1148 becaus temperatur deep sediment calcul from mix convect conduct thermal flow mode lower than from singl conduct mode bottom gas hydrat stabil zone ghsz deeper than bottom gas hydrat deposit zone ghdz bsr the result indic occurr zone natur decid condit natur gas concentr zone greater than it solubl

Zuan Chen

Wuming Bai

Wenyue Xu

Zhihe Jin

An Analysis on Stability and Deposition Zones of Natural Gas Hydrate in Dongsha Region, North of South China Sea

differenti scan calorimetri use studi effect isotop substitut eutect melt temperatur watertetrahydrofuran thf system thf molar fraction near stoichiometri hydrat phase deuter host caus opposit effect from guest respect hydrat liquidus curv eutect melt temperatur the eutect temperatur contain system approxim 37 higher than contain system the melt temperatur thf deuter thf hydrat increas rough 35 heavi water the inclus deuter thf caus depress hydrat liquidus temperatur small measur effect eutect temperatur

C. Y. Jones

J. S. Zhang

J. W. Lee

Isotope Effect on Eutectic and Hydrate Melting Temperatures in the Water-THF System

methan gas hydrat sediment have been studi sever investig possibl futur energi resourc recent hydrat reserv have been estim approxim methan gas worldwid standard temperatur pressur condit situ dissoci natur gas hydrat necessari order commerci exploit resourc from naturalgashydratebear sediment the presenc gas hydrat sediment dramat alter some normal physic properti sediment these chang can detect field measur downhol log understand physic properti hydratebear sediment necessari interpret geophys data collect field set borehol slope stabil analys reservoir simul product model this work review inform avail literatur relat physic properti sediment contain gas hydrat brief review physic properti bulk gas hydrat includ detect method morpholog relev physic properti gashydratebear sediment also discuss

Jorge F. Gabitto

Physical Properties of Gas Hydrates: A Review

structur clathrat hydrat pure hydrogen binari hydrat studi use initio calcul determin stabl occup small caviti initio calcul carri out doubl caviti consist one dodecahedron small caviti one hexakaidecahedron larg caviti these two caviti attach each other sii hydrat form doubl caviti one two molecul place small caviti one thf 4 molecul molecul place larg caviti have determin bind energi doubl caviti mp2 level use various basi set 321g 321g 321 631g 631g 631 differ basi set yield differ stabl occup small caviti the result from highest basi set 631 zero point energi correct indic singl occup slight more favor than doubl occup both case pure hydrat thf doubl hydrat

Prasad Yedlapalli

Stable Occupancy of Hydrogen Molecules in <svg style="vertical-align:-4.50008pt;width:24.775px;" id="M1" height="20.5625" version="1.1" viewBox="0 0 24.775 20.5625" width="24.775"  xmlns="http://www.w3.org/2000/svg">
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</svg> + THF Clathrate Hydrates Determined by <i  >Ab Initio</i> Calculations

thermodynam stabil hydrogen occup hydrogen tetra butyl ammonium bromid semiclathr hydrat were investig mean raman spectroscop phase equilibrium measur under threephas equilibrium condit the structur mix gas hydrat chang from tetragon anoth structur around 95 mpa 292 depend surround hydrogen fugac the occupi amount hydrogen semiclathr hydrat increas signific associ structur transit tetra butyl ammonium bromid semiclathr hydrat can absorb hydrogen molecul pressuresw without destroy hydrogen bond hydrat cage 15 mpa over

Shunsuke Hashimoto

Takaaki Tsuda

Kyohei Ogata

Takeshi Sugahara

Yoshiro Inoue

Kazunari Ohgaki

Thermodynamic Properties of Hydrogen + Tetra-<svg     style="vertical-align:-0.216pt;width:11.375px;" id="M1" height="10.4375" version="1.1" viewBox="0 0 11.375 10.4375" width="11.375"  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
	
		
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</svg>-Butyl Ammonium Bromide Semi-Clathrate Hydrate

this paper present radic new approach cubic equat state eos which gibbshelmholtz equat use constrain attract energi paramet the result express pure compon mixtur contain intern energi departur function complet avoid need use empir express like soav alpha function our approach also provid novel thermodynam rigor mix rule when intern energi departur function comput use mont carlo molecular dynam simul function current bulk phase condit result eos multiscal equat state the propos new gibbshelmholtz constrain ghc cubic equat state use predict liquid densiti high pressur valid use experiment data from literatur numer result clear show ghc eos provid fast accur comput liquid densiti high pressur which need determin gas hydrat equilibria

A MultiScale Gibbs-Helmholtz Constrained Cubic  Equation of State

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