Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Tondre, C.; Hébrant, Marc; Watarai, Hitoshi

doi:10.1006/jcis.2001.7889

Cited by 11 publications

(9 citation statements)

References 62 publications

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“…This asymmetrical fluctuant interface is also of great interest in other fields like phase-transfer catalysis, 1 transport through biological membranes, 2 and ionselective sensor and colloidal chemistry. 3 However, the analysis of phenomena that happen at L/L interfaces and the fundamental studies on this specific domain are difficult to perform because these interfaces are inherently buried, thin, and hard to probe independently from the bulks. Moreover, due to their nanometer scale extension in the normal direction and small amount of substances, the signals collected from this interface are relatively weak.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the second harmonic generation signal from a liquid/air and liquid/liquid interface

Pham

Jonchère

Dufrêche

et al. 2017

The Journal of Chemical Physics

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Three different liquid interfaces, water/air, thiophene/air, and water/thiophene, were probed using the second harmonic generation (SHG) technique. Thiophene and water have been chosen because the hyperpolarizability of these molecules has already been measured or calculated and the different values can be found in literature. We have studied the microscopic structure of these interfaces by comparing the components of the second order susceptibility tensor determined from the SHG polarization curve analysis with those determined via a molecular dynamics (MD) simulation of these interfaces. We have indeed computed the structure and orientation of water and thiophene molecules at the liquid/air and liquid/liquid (L/L) interfaces as a function of the distance from the interface. The integrated susceptibility values calculated by MD simulations agree well with SHG results and validate the choice of force fields that should permit to quantify more complex L/L interfaces.

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Section: Introductionmentioning

confidence: 99%

Analysis of the second harmonic generation signal from a liquid/air and liquid/liquid interface

Pham

Jonchère

Dufrêche

et al. 2017

The Journal of Chemical Physics

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“…The corresponding free energy value (∆G=-0.26k B T) has the same order of magnitude as ∆G' 2 . In our system we use surfactant molecules which must be in competition with extractants for the interfacial adsorption, like in model micellar systems 10 . Thus, the results are certainly function of the surfactant used, but for a given system, parameters such as the nature of extracted cations, the nature of extractant, the ionic force can be studied comparatively.…”

Section: Analysis -Discussionmentioning

confidence: 99%

Ion Extraction Mechanism Studied in a Lyotropic Lamellar Phase

et al. 2011

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In this paper we used a surfactant-stabilized lyotropic lamellar model system to study the interfacial behavior of an ion-extracting agent: N(1),N(3) dimethyl-N(1),N(3)-dibutyl-2-tetradecylmalonamide (DMDBTDMA). An analysis of small-angle X-ray scattering (SAXS) and polarized attenuated total reflectance-Fourier transform infrared (ATR-FTIR) data enabled us to describe the distribution of the malonamide extractant within the bilayers and its complexation state at the equilibrium. The lamellar phase was diluted with salt water containing varying amounts of complexing salt, and each structural state measured was described using a thermodynamic model based on three elementary equilibria: (i) partition of the extractant polar heads between the core and the polar shell of the bilayers, (ii) the complexation of ions by extractants at the bilayers surfaces, and (iii) the partition of bonded extractants between the core and interfaces of bilayers. This model enabled us to compare the energy cost of each step.

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“…The experimental method and the model developed here might be used in such studies. We studied, in a recent past metal ion complexation kinetics by ligand solubilized in colloid such as micro-emulsions [20] or vesicles [21] in conditions in which only the chemical reaction was limiting the rate, and we discussed the case of metal ion extraction kinetics in biphasic system in which diffusion plays a role [22]. For this reason, it was not a priori imagined to calculate chemical reactions rates for phenomena that are not rate limited by a chemical reaction step.…”

Section: Comparison With Existing Modelsmentioning

confidence: 98%

Conductivity stopped-flow study of the kinetics of solutes uptake by colloidal particles of synthetic resins

Hébrant¹

2007

Journal of Colloid and Interface Science

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Rate of Interfacial Reactions Compared to Bulk Reactions in Liquid–Liquid and Micellar Processes: An Attempt to Clarify a Confusing Situation

Cited by 11 publications

References 62 publications

Analysis of the second harmonic generation signal from a liquid/air and liquid/liquid interface

Analysis of the second harmonic generation signal from a liquid/air and liquid/liquid interface

Ion Extraction Mechanism Studied in a Lyotropic Lamellar Phase

Conductivity stopped-flow study of the kinetics of solutes uptake by colloidal particles of synthetic resins

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