Adsorption of alkali chloride and ammonium halide on halloysite

Wada, Kōji

doi:10.1080/00380768.1958.10430876

Cited by 14 publications

(3 citation statements)

References 4 publications

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“…Most of the salts used by Wada (1958Wada ( , 1959aWada ( , 1959b and Garrett and Walker (1959) were tested with Kauri halloysite (10 ~) and, in most cases, similar results were obtained. To gain a better understanding of the mechanism of intercalation several other salts containing univalent, divalent, and trivalent cations were tested.…”

Section: Resultsmentioning

confidence: 57%

“…Salt complexes of halloysite were first extensively studied by Wada (1958Wada ( , 1959aWada ( , 1959b who showed that certain inorganic salts of some alkali metals were intercalated within the halloysite structure by replacing interlayer water. Wada prepared complexes with the chlorides, nitrates, acetates, and monohydrogen phosphates of potassium and ammonia but did not observe any interactions between the clay mineral and the corresponding salts of lithium and sodium.…”

Section: Intercalation Of Salts In Halloysitementioning

confidence: 99%

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Intercalation of Salts in Halloysite

Carr

1978

Clays and clay miner.

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Abstract--Several new salt intercalation complexes of halloysite have been prepared and characterized using X-ray powder diffraction techniques taking into account both the position and the shape of the d0el peaks. The amount of intercalated ion in some fully complexed halloysites has been directly determined using conventional analytical techniques. The results show that less than half of the theoretical amount of salt is intercalated into the clay; the amount of salt depending on its nature and, where hydrolyzable ions are present, on the pH. Infrared spectra taken of some complexes give an indication of the nature of the interaction within interlayer space and elsewhere. The interactions are weak and are either dipolar attractions or hydrogen bonds. The ions which show the greatest tendency to intercalate with halloysite are water structure-breaking cations or hydrogen-bonding anions.

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Section: Resultsmentioning

confidence: 57%

Section: Intercalation Of Salts In Halloysitementioning

confidence: 99%

Intercalation of Salts in Halloysite

Carr

1978

Clays and clay miner.

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“…The same had been found for NH4CI by Reeve & Sumner (1971). However, the use of potassium and ammonium for determining CEC has several disadvantages (Barshad 1954;Wada 1958;Thomas 1960;Rich & Lutz 1965;Fiskell 1970). For this reason further work was carried out only with CaCb, using the weighing procedure.…”

Section: Experiments 3bmentioning

confidence: 99%

Cation-exchange capacity at field pH and its relation to the affinity of soils for individual cations

During¹

1973

New Zealand Journal of Agricultural Research

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A good measure of cation-exchange capacity at field pH was obtained by equilibrium leaching with 0.025M CaCb and estimating the quantity of Ca retained in the soil by a weighing procedure, but not by washing with ethanol. Except on soils with very high levels of exchangeable aluminium, equilibrium leaching with a solution containing 2.0, 0.5, 0.4, and O.4mM of CaS04, MgS04, KCl, and KH2P04 respectively gave values of total adsorbed cations very similar to cation-exchange capacity obtained with 0.025M CaCI2. The multiple cation solution can be used to rank soils according to their affinity for individual cations. Effective relative affinities and effective cation-exchange capacity therefore can be assessed with the same solution.It was found that the selectivity of soils for cations, and therefore the ratio of affinities for a pair of cations, greatly varies with pH.

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Clay mineralogy

Mackenzie¹,

Mitchell²

1966

Earth-Science Reviews

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Adsorption of alkali chloride and ammonium halide on halloysite

Cited by 14 publications

References 4 publications

Intercalation of Salts in Halloysite

Intercalation of Salts in Halloysite

Cation-exchange capacity at field pH and its relation to the affinity of soils for individual cations

Clay mineralogy

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