Adsorption of Et4NBr at the mercury/electrolyte interface from water and heavy water solutions

1979 ◽  
Vol 57 (3) ◽  
pp. 330-334
Author(s):  
Frank M. Kimmerle ◽  
Hugues Menard
Keyword(s):  
Interfacial Tension ◽  
Heavy Water ◽  
Dilute Solutions ◽  
Water Solutions ◽  
Electrolyte Interface ◽  
Concentrated Electrolytes ◽  
Interfacial Transfer ◽  
Solute Interactions ◽  
Transfer Parameters ◽  
The Difference

Droptime measurements of aqueous and deuterated Et4NBr solutions indicate that the mercury/electrolyte interfacial tension differs by less than 1 mJ m−2 (dyn cm−1). Et4NBr is slightly more adsorbed from heavy water in dilute solutions, but the difference becomes relatively less important in concentrated electrolytes. This behaviour is interpreted in terms of interfacial transfer parameters and attributed to the nature of the solvent–solute interactions.

Growth kinetics of lithium formate crystals in normal and heavy water solutions

1982 ◽  
Vol 60 (1) ◽  
pp. 14-20 ◽  
Author(s):  
J. Szewczyk ◽  
J. Karniewicz ◽  
W. Kolasiński
Keyword(s):  
Heavy Water ◽  
Growth Kinetics ◽  
Water Solutions ◽  
Lithium Formate ◽  
Kinetics Of

Experimental Simulation on Imbibition of the Residual Fracturing Fluid in Tight Sandstone Reservoirs

2019 ◽  
Vol 141 (8) ◽  
Author(s):  
Xiaoxia Ren ◽  
Aifen Li ◽  
Asadullah Memon ◽  
Shuaishi Fu ◽  
Guijuan Wang ◽  
...  
Keyword(s):  
Interfacial Tension ◽  
Oil Recovery ◽  
Experimental Simulation ◽  
Fluid Distribution ◽  
Oil Viscosity ◽  
Pore Throat ◽  
Fracturing Fluid ◽  
Tight Sandstone ◽  
The Difference ◽  
Displacement Processes

Fracturing is a fundamental technique for enhancing oil recovery of tight sandstone reservoir. The pores in tight reservoirs generally have small radii and generate tremendous capillary force; accordingly, the imbibition effect can significantly affect retention and absorption of the fracturing fluid. In this study, the imbibition behaviors of the fracturing fluid were experimentally investigated, and the effects of interfacial tension, (IFT) permeability, oil viscosity, and the salinity of the imbibition fluid were determined. In addition, combining with nuclear magnetic resonance (NMR)-based core analysis, fluid distribution, and the related variations in imbibition and displacement processes were analyzed. Finally, some key influencing factors of imbibition of the residual fracturing fluid, the difference and correlation between imbibition and displacement, as well as the contribution of imbibition to displacement were explored so as to provide optimization suggestions for guiding the application of oil-displacing fracturing fluid in exploration. Results show that imbibition recovery increased with time, but the imbibition rate gradually dropped. There exists an optimal interfacial tension that corresponds to maximum imbibition recovery. In addition, imbibition recovery increased as permeability and salinity increases and oil viscosity decreases. Furthermore, it was found that extracted oil from the movable pore throat space was almost equal to that from the irreducible pore throat space during imbibition and their contribution in the irreducible pore throat space was greater than in the movable pore throat space in the displacement process. Hence, imbibition plays a more important role during the displacement process in the reservoirs with finer porous structure than previously thought.

scholarly journals Influence of Sulphur Impurities on the Interfacial Tension between Aluminium and Cryolite Alumina Melts

2007 ◽  
Vol 62 (5-6) ◽  
pp. 309-314 ◽  
Author(s):  
Michal Korenko
Keyword(s):  
Interfacial Tension ◽  
Molten Salt ◽  
Current Density ◽  
Metal Salt ◽  
Video Recording ◽  
Salt Layer ◽  
Electrolyte Interface

The interfacial tension (IFT) between aluminium and cryolite melts containing different salt additions (AlF3, NaF,Na2SO4) has been measured during electrolysis by the capillary depression method. The technique is based on the measurement of the capillary depression occurring when a capillary, which is moved vertically down through the molten salt layer, passes through the metal/salt interface. The depression is measured by simultaneous video recording of the immersion height of the alumina capillary. The interfacial tension is strongly dependent on the n(NaF)/n(AlF3) ratio. The addition of Na2SO4 decreases the IFT of the aluminium/electrolyte interface. We also found the different influence of the conditions of electrolysis on the IFT in systems with and without Na2SO4. In systems without Na2SO4 the IFT decreases with increasing current density, and in systems with Na2SO4 it increases.

HYDROGEN PEROXIDE AND ITS ANALOGUES: III. ABSORPTION SPECTRUM OF HYDROGEN AND DEUTERIUM PEROXIDES IN THE NEAR ULTRAVIOLET

1951 ◽  
Vol 29 (6) ◽  
pp. 490-493 ◽  
Author(s):  
M. K. Phibbs ◽  
Paul A. Giguère
Keyword(s):  
Hydrogen Peroxide ◽  
Absorption Spectrum ◽  
Ultraviolet Light ◽  
Heavy Water ◽  
Zero Point ◽  
Zero Point Energy ◽  
Point Energy ◽  
Near Ultraviolet ◽  
The Difference ◽  
High Concentrations

The absorption of ultraviolet light between 3000 and 4000 Å by solutions of hydrogen peroxide in water and of deuterium peroxide in heavy water has been measured at various concentrations. Both peroxides show slight but real deviations from Beer's law at high concentrations. Substitution of hydrogen by deuterium shifts the absorption continuum by about 390 cm.−1 towards shorter wave lengths. This shift is of the same order as that calculated from the difference in zero-point energy of the two isotopic molecules.

Notizen: Solvent Deuterium Isotope Effect on Hydrolysis of Nd3+ Ion

1977 ◽  
Vol 32 (12) ◽  
pp. 1493-1495 ◽  
Author(s):  
Masunobu Maeda ◽  
Toshihiko Amaya ◽  
Hidetake Kaeihana
Keyword(s):  
Isotope Effect ◽  
Heavy Water ◽  
Formation Constant ◽  
Water System ◽  
Glass Electrode ◽  
Mononuclear Complex ◽  
Deuterium Isotope Effect ◽  
Light Water ◽  
Water Solutions ◽  
Hydrolysis Of

The hydrolysis equilibria of Nd3+ ion in light- and heavy-water solutions containing 3 mol dm-3 (Li)ClO4 as an ionic medium were studied at 25 °C by measuring the lyoniumion concentration with a glass electrode. Analysis of the emf data indicated the formation of only the mononuclear complex Nd(OL)2+ in both light and heavy water. The formation constant *β2,1 was smaller in D2O (log *β2,1 = —16.54 ± 0.04) than in H2O (log *β2,1 = —15.90 ± 0.06). The formation constant K2,1 for the heavy-water system (log K2,1 = 12.28) had a larger value than that for the light-water system (log K2,1 = 11.86).

Volume-related interaction parameters for dilute solutions of Mebicaret (2,4-dimethyl-6,8-diethylglycoluril) in normal and heavy water between 278.15 K and 318.15 K

2017 ◽  
Vol 242 ◽  
pp. 160-167 ◽  
Author(s):  
Evgeniy V. Ivanov ◽  
Elena Yu. Lebedeva ◽  
Svetlana G. Petrovskaya ◽  
Vladimir V. Baranov ◽  
Angelina N. Kravchenko ◽  
...  
Keyword(s):  
Heavy Water ◽  
Interaction Parameters ◽  
Dilute Solutions
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