Coacervation in aqueous solutions of short chain tetraalkylammonium bromide and sodium silicate

J.C.J. Donck, van der; H.N. Stein

doi:10.1021/la00033a005

Coacervation in aqueous solutions of short chain tetraalkylammonium bromide and sodium silicate

J.C.J. Donck, van der, H.N. Stein

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Abstract

Coacervation (liq./liq. sepn.) takes place in aq. solns. contg. short chain tetraalkylammonium (TAA) and silicate ions when other ions (Na+, Br-) are present. The TAA bromide is predominantly present in the upper layer and the Na silicate is mainly present in the lower layer. The coacervation can be described using the activity coeffs. of the 2 sep. salts and a Redlich-Kister type excess Gibbs free energy. Since part of the Gibbs free energy is dependent on the enthalpy of hydrophobic hydration of the TAA ions, the driving force for coacervation is ascribed to a mismatch of the hydration layers around the silicate and TAA ions. [on SciFinder (R)]

Original language	English
Pages (from-to)	2270-2275
Journal	Langmuir
Volume	9
Issue number	9
DOIs	https://doi.org/10.1021/la00033a005
Publication status	Published - 1993

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title = "Coacervation in aqueous solutions of short chain tetraalkylammonium bromide and sodium silicate",

abstract = "Coacervation (liq./liq. sepn.) takes place in aq. solns. contg. short chain tetraalkylammonium (TAA) and silicate ions when other ions (Na+, Br-) are present. The TAA bromide is predominantly present in the upper layer and the Na silicate is mainly present in the lower layer. The coacervation can be described using the activity coeffs. of the 2 sep. salts and a Redlich-Kister type excess Gibbs free energy. Since part of the Gibbs free energy is dependent on the enthalpy of hydrophobic hydration of the TAA ions, the driving force for coacervation is ascribed to a mismatch of the hydration layers around the silicate and TAA ions. [on SciFinder (R)]",

author = "{Donck, van der}, J.C.J. and H.N. Stein",

year = "1993",

doi = "10.1021/la00033a005",

language = "English",

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journal = "Langmuir",

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publisher = "American Chemical Society",

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T1 - Coacervation in aqueous solutions of short chain tetraalkylammonium bromide and sodium silicate

AU - Donck, van der, J.C.J.

AU - Stein, H.N.

PY - 1993

Y1 - 1993

N2 - Coacervation (liq./liq. sepn.) takes place in aq. solns. contg. short chain tetraalkylammonium (TAA) and silicate ions when other ions (Na+, Br-) are present. The TAA bromide is predominantly present in the upper layer and the Na silicate is mainly present in the lower layer. The coacervation can be described using the activity coeffs. of the 2 sep. salts and a Redlich-Kister type excess Gibbs free energy. Since part of the Gibbs free energy is dependent on the enthalpy of hydrophobic hydration of the TAA ions, the driving force for coacervation is ascribed to a mismatch of the hydration layers around the silicate and TAA ions. [on SciFinder (R)]

AB - Coacervation (liq./liq. sepn.) takes place in aq. solns. contg. short chain tetraalkylammonium (TAA) and silicate ions when other ions (Na+, Br-) are present. The TAA bromide is predominantly present in the upper layer and the Na silicate is mainly present in the lower layer. The coacervation can be described using the activity coeffs. of the 2 sep. salts and a Redlich-Kister type excess Gibbs free energy. Since part of the Gibbs free energy is dependent on the enthalpy of hydrophobic hydration of the TAA ions, the driving force for coacervation is ascribed to a mismatch of the hydration layers around the silicate and TAA ions. [on SciFinder (R)]

U2 - 10.1021/la00033a005

DO - 10.1021/la00033a005

M3 - Article

SN - 0743-7463

VL - 9

SP - 2270

EP - 2275

JO - Langmuir

JF - Langmuir

IS - 9

ER -

Coacervation in aqueous solutions of short chain tetraalkylammonium bromide and sodium silicate

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