Synthetic inorganic ion-exchange materials—II

Amphlett, C.B.; McDonald, L.A.; Redman, M.J.

doi:10.1016/0022-1902(58)80153-0

Cited by 101 publications

(15 citation statements)

References 10 publications

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“…In the experiments, pzc values for ThO 2 did not deviate more than 0.3 pH units from these results. For systems other than NaClO 4 , the isoelectric point for ThO 2 has been assigned values between pH 4 and 11 (21)(22)(23).…”

Section: Discussionmentioning

confidence: 99%

Surface Charge Densities of Two Actinide(IV) Oxides: UO2 and ThO2

Olsson

Jakobsson

Albinsson

2002

Journal of Colloid and Interface Science

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Section: Discussionmentioning

confidence: 99%

Surface Charge Densities of Two Actinide(IV) Oxides: UO2 and ThO2

Olsson

Jakobsson

Albinsson

2002

Journal of Colloid and Interface Science

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“…The observed concentrations of detergents for the particle-diffusion mechanism are considerably less than those reported for the exchange sorption of some simple as well as complex cations on various sorbents (14)(15)(16)(21)(22)(23)(24)(25)(26)(27)(28). It is well known that the rate of uptake and mobility of ions in solution effectively determine the characteristics of the liquid film surrounding the sorbent particle.…”

Section: Fig 2 Plots Of F Vs T Andmentioning

confidence: 66%

Kinetics and mechanism of ion exchange sorption of some detergents on zinc ferrocyanide

Srivastava¹,

Jain²,

Oberoi³

et al. 1982

Can. J. Chem.

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Studies have been made on the kinetics and mechanism of exchange sorption of detergents on zinc ferrocyanide using a modified limited bath technique. The effects of concentration, particle size of the sorbent material, and temperature on the sorption rate have been investigated. In the case of cationic detergents (cetyl pyridinium bromide and cetyl trimethylammonium bromide), equilibrium is attained in a period of 2–3 h while 12–16 h are required for anionic detergents, viz., sodium dodecyl sulphate and sodium dodecyl benzene sulphonate. The slowest step governing the sorption rate is found to be the diffusion within the exchanger particles at higher concentrations. The effective diffusion coefficients have been evaluated at four different temperatures and found to be comprised of mainly two components. The energy barriers against the diffusion of exchanging ions have been assessed from the Arrhenius equation. Entropies of activation for various sorption systems have also been calculated. The results are discussed in terms of the size and geometry of the detergents, pore-widths in the sorbent material, and the electric potential gradient along the diffusion path. No change in the internal structure of zinc ferrocyanide is inferred due to the sorption of detergent ions.

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“…Активними (сорбційними) центрами будуть виступати гідроксильні групи на по-верхні пілардованих глинистих мінералів. Такі групи в залежності від рН розчину можуть іонізуватися за двома механізмами [19]:…”

Section: рис 1 дифрактограми зразків вихідного та пілардованих монтunclassified