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Characterization of Adsorbed Iron in Montmorillonite by Mossbauer Spectroscopy
Debye temperature Iron Montmorillonite Mossbauer spectroscopy Water
2011/11/23
Abstract: The Mössbauer effect of Fe57 was used to probe and characterize iron ions adsorbed on the interlayer surfaces of montmorillonite. Measurements were performed with Fe- and Ca-saturated m...
Electrical Conductivity of Na/Ca-Montmorillonite Gels
Cation mobility Electrical conductivity Electrolyte Montmorillonite
2011/11/23
Abstract: The specific conductivity, κg, of Na°Ca montmorillonite gels (0.02 and 0.04 g clay/cm3) as a function of the specific conductivity of the interclay solution, κw, was measured. For low values...
Influence of Exchangeable Cation Composition on the Size and Shape of Montmorillonite Particles in Dilute Suspension
Exchange cations Light transmission Montmorillonite Particle size Tactoid Viscosity
2011/11/23
Abstract: Viscosity and light-transmission measurements of dilute suspensions of montmorillonites having different exchangeable cations were used to calculate relative particle sizes as a function of ...
Effect of Exchangeable Ions and Ionic Strength on Boron Adsorption by Montmorillonite and Illite
Adsorption Boron Cation exchange Illite Ionic strength Montmorillonite
2012/2/7
The effects of exchangeable Na and Ca and the ionic strength of NaCl and CaCl2 solutions on the boron adsorption by the Na and Ca forms of montmorillonite and illite at pH 9 were studied. The boron ad...
Effects of Temperature on the Sorption of Lanthanides by Montmorillonite
Adsorption Cation exchange Hydrolysis Infrared spectroscopy Lanthanides Montmorillonite X-ray powder diffraction
2012/2/7
The diffusion of exchanged Yb, Ho, and Eu from interlayer positions in montmorillonite was studied using infrared spectroscopy (IR), X-ray powder diffraction, and cation-exchange measurements. Dehydra...
Adsorption of Uranium from Solutions by Montmorillonite; Compositions and Properties of Uranyl Montmorillonites
Adsorption Cation exchange Interlayer cations Montmorillonite Uranium Uranyl montmorillonite
2011/11/22
Abstract: Wyoming montmorillonite, <2-祄 particle size, saturated with Na, K, Mg, Ca, and Ba ions, was reacted with uranyl nitrate solutions in the concentration range 1?00 ppm uranium. With constant a...
Preparation and Electrical Properties of Quaternary Ammonium Montmorillonite-Polystyrene Complexes
Electrical properties Intercalation Montmorillonite Polystyrene Quaternary ammonium complexes
2012/2/8
Intercalation compounds of styrene and quaternary ammonium montmorillonite were prepared by immersion of the clay in styrene monomer. The intercalation of stearyltrimethylammonium (CH3(CH2)17N(CH3)3+)...
Diffusion of Water in Li-Montmorillonite Studied by Quasielastic Neutron Scattering
Diffusion Montmorillonite Neutron scattering Water
2012/2/8
The diffusion of water in Li-montmorillonite was studied by incoherent quasielastic neutron scattering. Experiments were carried out on sedimented samples equilibrated at relative humidities of 32%, 5...
Infrared Spectroscopy of Picloram Interactions with Al(III)-, Fe(III)-, and Cu(II)-Saturated and Hydrous Oxide-Coated Montmorillonite
Adsorption Hydrous oxides Infrared spectroscopy Montmorillonite Picloram
2012/2/8
Thin clay films prepared from aqueous suspensions of the potassium or sodium salt of picloram (4-amino-3,5,6-trichloropicolinic acid) with Al-, Fe-, or Cu-saturated montmorillonite or with montmorillo...
Formation, Compositions, and Properties of Hydroxy-Al- and Hydroxy-Mg-Montmorillonite
Hydrolysis Hydroxy interlayer Montmorillonite Swelling Thermal stability
2012/2/9
Hydroxy-Al- and hydroxy-Mg-montmorillonite were prepared by treating dispersed Na-montmorillonite with aluminum and magnesium nitrate solutions and titrating with NaOH solutions so that the OH/Al rati...
Interfacial Water Structure in Montmorillonite from Neutron Diffraction Experiments
Clay-water system Hydroxyl orientation Interlayer water Montmorillonite Neutron diffraction
2011/11/22
Abstract: Neutron diffraction measurements for a preferentially oriented aggregate slab sample of deuterated Na-montmorillonite from Upton, Wyoming, are described for a series of clay-water contents r...
Adsorption of Organic Diacids and Sodium Polyacrylate onto Montmorillonite
Adsorption Montmorillonite Organic diacids Polyacrylate Polyacrylamide
2012/2/9
Organic diacid (oxalic and succinic) adsorption onto montmorillonite is feasible, but weak (…1 mg/g). The comparison of chemical and radiochemical determinations reveals that 80% of the acid in contac...
Reaction of Hydroxy-Bismuth Polycations with Montmorillonite
Bismuth Cation exchange Hydrolysis Hydroxy-bismuth Montmorillonite Surface area
2012/2/9
Interlayer sodium ions of montmorillonite were exchanged with hydroxy-bismuth polycations which were prepared from bismuth perchlorate solutions by the addition of NaOH. Assuming the charge density of...
Water Vapor Isotherms and Heat of Immersion of Na- and Ca-Montmorillonite Systems. III. Thermodynamics
Adsorption Heat of immersion Montmorillonite Thermodynamics Water
2012/2/9
The integral thermodynamic quantities of adsorbed water on Na- and Ca-montmorillonite have been calculated from water adsorption isotherms on Na- and Ca-montmorillonite at 298° and 313°K and from one ...
Swelling Components of Compacted Ca-Montmorillonite
Compaction Double layer theory Montmorillonite Pore-size distribution Swelling Water adsorption
2012/2/8
Intracrystalline water adsorption of Ca-montmorillonite was calculated as the product of one-half the interlayer spacing from X-ray powder diffraction analysis and the difference between the desorptio...