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K-Ar Dating of Illitic Fractions of Estonian “Blue Clay” Treated with Alkylammonium Cations
Alkylammonium Cations Estonian “Blue Clay” Illite K-Ar Shale Diagenetic Age
2011/12/2
Abstract: Two clay fractions of a Cambrian claystone from Estonia, consisting essentially of illite and 20% expandable illite-smectite, (I-S) were treated with C12 and C18 alkylammonium cations for K-...
Application of an Internal Standard Technique by Transmission X-ray Diffraction to Assess Layer Charge of a Montmorillonite by Using the Alkylammonium Method
Alkylammonium Method Interlayer Cation Exchange Capacity Layer-Charge Determination Montmorillonite Silver Behenate XRD
2011/12/6
Abstract: Transmission X-ray diffraction (XRD) of C6–16 alkylammonium ion-exchanged montmorillonite SAz-1 with Ag-behenate as an internal standard provided accurate estimates of d(001) values of the a...
Characterization of Untreated and Alkylammonium Ion Exchanged Illite/Smectite by High Resolution Transmission Electron Microscopy
Alkylammonium Clays Diagenesis Illite Interstratification Smectite Transmission Electron Microscopy
2011/12/28
High resolution transmission electron microscopy (HRTEM) have been performed on dispersed portions of one R > 1 and two R3 illite/smectite (I/S) samples from Silurian K-bentonites. R > 1 sample was st...
Layer Charge of the Expandable Component of Illite/Smectite in K-Bentonite as Determined by Alkylammonium Ion Exchange
Alkylammonium Bentonite Clays Diagenesis Illite Illite/smectite Layer charge Smectite
2011/12/27
The charge of the expandable interlayers in a series of fourteen diagenetic illite/smectites (I/S) from lower Paleozoic K-bentonites was determined by the alkylammonium ion exchange method. The magnit...
Solid-State Intercalation of Naphthalene and Anthracene into Alkylammonium-Montmorillonites
Alkylammonium-montmorillonites Anthracene Intercalation Naphthalene Solid-state intercalation
2011/12/31
Intercalation of naphthalene and anthracene into alkyltrimethylammonium (CnH2n+1(CH3)3N+; n = 8, 12, 14, 16, and 18)-montmorillonites was carried out by novel solid-solid reactions at room temperature...
Evaluation of the Alkylammonium Method of Determining Layer Charge
Alkylammonium Layer charge Reduced charge Smectite Structural formula
2011/11/30
Abstract: The layer charge of five smectites, one vermiculitic material, and five reduced-charge clays was determined by the alkylammonium and structural formula methods. The two sets of results were ...
The Exchange of Alkylammonium Ions on Na-Laponite
Alkylammonium Exchange Equilibrium Isotherms Laponite
2012/2/10
The exchange of various alkylammonium cations from aqueous solution by sodium laponite has been studied. The affinity of the clay for these organic cations was linearly related to the molecular weight...
Gas Chromatographic Pathways for Certain Chloro-Alkylammonium Montmorillonites
Gas Chromatographic Pathways Chloro-Alkylammonium Montmorillonites
2012/2/13
A series of chloro-alkylammonium montmorillonites was produced by cation exchange from Na+-montmorillonite. Gas chromatographic data were obtained for light hydrocarbons and certain oxides of nitrogen...
Properties of Reduced Charge Montmorillonite: Tetra-Alkylammonium Ion Exchange Forms
Montmorillonite Tetra-Alkylammonium Ion Exchange Forms
2012/2/15
Surface properties of reduced charge montmorillonites (RCM) whose exchange capacities were saturated with tetra-alkylammonium cations, were studied with X-ray diffraction, nitrogen, and water adsorpti...
Segregation and Exchange Properties of Alkylammonium Ions in a Smectite and Vermiculite
Segregation Exchange Properties Alkylammonium Ions Smectite Vermiculite
2012/2/15
X-ray diffraction analysis of mixed alkylammonium-exchanged smectite revealed segregation of different ion species into randomly ordered layers. Vermiculite, however, showed segregation into crystalli...
Thermodynamics of the Exchange of n-Alkylammonium Ions on Na-Montmorillonite
Thermodynamics Exchange n-Alkylammonium Ions Na-Montmorillonite
2011/11/17
Abstract: A thermodynamic study has been made of the ion exchange equilibria of the n-alkylammonium ions in sodium montmorillonite. Exchange isotherms of ammonium, methylammonium, ethylammonium, propy...
Alkylammonium Decomposition on Montmorillonite Surfaces in an Inert Atmosphere
Alkylammonium Decomposition Montmorillonite Surfaces Inert Atmosphere
2011/11/17
Abstract: A study of the thermal transformation of alkylammonium cations adsorbed on the surface of a montmorillonite in various conditions of hydration has been carried out. The experimental conditio...