Insight into Hydrate Film Growth: Unusual Growth of Methane Hydrate Film at the Interface of Methane and the Aqueous Solution of Malonic Acid

2020 ◽  
Vol 20 (3) ◽  
pp. 1927-1934
Author(s):  
Andrey S. Stoporev ◽  
Tatyana P. Adamova ◽  
Andrey Yu. Manakov
Keyword(s):  
Aqueous Solution ◽  
Malonic Acid ◽  
Methane Hydrate ◽  
Film Growth ◽  
Hydrate Film ◽  
Insight Into

Methane hydrate film growth kinetics

2001 ◽  
Vol 185 (1-2) ◽  
pp. 65-75 ◽  
Author(s):  
Erik M. Freer ◽  
M. Sami Selim ◽  
E. Dendy Sloan
Keyword(s):  
Growth Kinetics ◽  
Methane Hydrate ◽  
Film Growth ◽  
Hydrate Film

scholarly journals Study on the Growth Kinetics and Morphology of Methane Hydrate Film in a Porous Glass Microfluidic Device

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6814
Author(s):  
Xingxun Li ◽  
Cunning Wang ◽  
Qingping Li ◽  
Qi Fan ◽  
Guangjin Chen ◽  
...  
Keyword(s):  
Natural Gas ◽  
Growth Kinetics ◽  
Gas Hydrates ◽  
Methane Hydrate ◽  
Driving Force ◽  
Film Growth ◽  
Porous Space ◽  
Natural Gas Hydrates ◽  
Growth Phenomenon ◽  
Hydrate Film

Natural gas hydrates are widely considered one of the most promising green resources with large reserves. Most natural gas hydrates exist in deep-sea porous sediments. In order to achieve highly efficient exploration of natural gas hydrates, a fundamental understanding of hydrate growth becomes highly significant. Most hydrate film growth studies have been carried out on the surface of fluid droplets in in an open space, but some experimental visual works have been performed in a confined porous space. In this work, the growth behavior of methane hydrate film on pore interior surfaces was directly visualized and studied by using a transparent high-pressure glass microfluidic chip with a porous structure. The lateral growth kinetics of methane hydrate film was directly measured on the glass pore interior surface. The dimensionless parameter (−∆G/(RT)) presented by the Gibbs free energy change was used for the expression of driving force to explain the dependence of methane hydrate film growth kinetics and morphology on the driving force in confined pores. The thickening growth phenomenon of the methane hydrate film in micropores was also visualized. The results confirm that the film thickening growth process is mainly determined by water molecule diffusion in the methane hydrate film in glass-confined pores. The findings obtained in this work could help to develop a solid understanding on the formation and growth mechanisms of methane hydrate film in a confined porous space.

High-rate a-Si:H and μc-Si:H Film Growth Studied by Advanced Plasma and in situ Film Diagnostics

2002 ◽  
Vol 715 ◽  
Author(s):  
W.M.M. Kessels ◽  
P.J. van den Oever ◽  
J.P.M. Hoefnagels ◽  
J. Hong ◽  
I.J. Houston ◽  
...  
Keyword(s):  
Film Growth ◽  
Film Studies ◽  
Interface Layer ◽  
Surface Reactivity ◽  
Attenuated Total Reflection ◽  
High Rate ◽  
High Deposition Rate ◽  
Basic Insight ◽  
Insight Into

AbstractPlasma and in situ film studies have been applied to the expanding thermal plasma to obtain basic insight into the deposition of a-Si:H and μc-Si:H at high rates (> 10 Å/s). A study of the density of plasma radicals (Si, SiH, SiH3) and of the radicals' surface reactivity has revealed that SiH3 is the most important radical for the growth of both materials. In situ attenuated total reflection infrared spectroscopy and spectroscopic ellipsometry have revealed a thick interface layer and consequently long incubation time for the materials deposited at a high deposition rate.

Metal ion – biomolecule interactions. X. Synthesis, spectroscopic and magnetic resonance investigations of methylmercury(II) complexes of the sulfur modified nucleosides 6- mercaptopurine riboside and 2-amino-6-mercaptopurine riboside

1986 ◽  
Vol 64 (3) ◽  
pp. 442-448 ◽  
Author(s):  
E. Buncel ◽  
R. Kumar ◽  
A. R. Norris
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Chemotherapeutic Agents ◽  
Modified Nucleosides ◽  
Coupling Constants ◽  
Heterocyclic Ligands ◽  
Methylmercury Poisoning ◽  
Insight Into ◽  
C Nmr ◽  
Ligand Bond

A number of methylmercurated complexes of 6-mercaptopurine riboside and 2-amino-6-mercaptopurine riboside (6-MNucH2) containing S-bound CH3Hg(II) in neutral and cationic complexes (as in [CH3Hg(6-MNucH)] and [CH3Hg(6-MNucH2)]NO3), S- and N-bound CH3Hg(II) (as in [(CH3Hg)2(6-MNucH)]NO3), and S-, N-, C-bound CH3Hg(II) (as in [(CH3Hg)3(6-MNuc)]NO3) have been prepared in aqueous solution at appropriate pH and mole ratios of the constituents. The complexes were characterized by means of 1H and 13C nmr and ir spectroscopy and elemental analysis. Formation of C-bound methylmercurated species extends our previous results obtained with xanthosine, inosine, and imidazole derivatives, and substantiates our proposal that activation through electrophilic coordination at N(7) is a requirement for C(8)—H abstraction. 2J(1H–199Hg) coupling constants, measured in (CD3)2SO for a number of CH3Hg(II) complexes of N-, S-, and C-donor heterocyclic ligands, including the 6-mercaptopurine riboside of the present study, correlate well with the 1J(13C–199Hg) coupling constants, according to 1J = 8.4602J − 155.6. The significance of this correlation in terms of the strength of the Hg–ligand bond is considered. The results could provide insight into the apparent selectivity of binding of CH3Hg(II) by bio-ligands, as well as in the design of chemotherapeutic agents for the treatment of methylmercury poisoning.

New insight into effective biosorption of lead from aqueous solution using Ralstonia solanacearum: Characterization and mechanism studies

2018 ◽  
Vol 174 ◽  
pp. 1234-1239 ◽  
Author(s):  
Arivalagan Pugazhendhi ◽  
Gowri Manogari Boovaragamoorthy ◽  
Kuppusamy Ranganathan ◽  
Mu Naushad ◽  
Thamaraiselvi Kaliannan
Keyword(s):  
Aqueous Solution ◽  
Ralstonia Solanacearum ◽  
Insight Into

scholarly journals Insight into Heterogeneity Effects in Methane Hydrate Dissociation via Pore-Scale Modeling

2018 ◽  
Vol 124 (1) ◽  
pp. 183-201 ◽  
Author(s):  
S. M. Abdoli ◽  
S. Shafiei ◽  
A. Raoof ◽  
A. Ebadi ◽  
Y. Jafarzadeh
Keyword(s):  
Methane Hydrate ◽  
Pore Scale ◽  
Hydrate Dissociation ◽  
Scale Modeling ◽  
Pore Scale Modeling ◽  
Heterogeneity Effects ◽  
Insight Into
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