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Swelling of Formamide-Montmorillonite Complexes in Polar Liquids
Donor Number Formamide Montmorillonite Osmotic Swelling Polar Liquids Swelling
2011/12/7
Abstract: A new osmotic-swelling system for montmorillonite with formamide (FA) is described. Water and a variety of polar organic liquids were used to swell FA-montmorillonite complexes. The post-swe...
Complex Formation of Cation-Exchanged Montmorillonites with Propylene Carbonate: Osmotic Swelling in Aqueous Electrolyte Solutions
Infra-Red Spectroscopy Intercalation Complex Montmorillonite Osmotic Swelling Propylene Carbonate
2011/12/7
Abstract: Montmorillonites saturated with Li+, Na+, K+, NH4+, Mg2+, Ca2+, Ba2+, or Ni2+ ions can form complexes with propylene carbonate (PC) by intercalation; the d(001) of montmorillonite expands to...
Swelling and Texture of Iron-Bearing Smectites Reduced by Bacteria
Bacteria Biological Reduction Organo-Clay Interactions Smectites Structural Iron Swelling Pressure Texture
2011/12/8
Abstract: Microbial reduction of clay mineral structural Fe(III) decreases the swelling of nontronite gels, most importantly at intermediate oxidation states (40 to 80 cmol Fe(II) kg−1 clay). Th...
Sate and Location of Water Adsorbed on Clay Minerals: Consequences of the Hydration and Swelling-Shrinkage Phenomena
Clay Paste Fabric Hydration State and Location of Water Swelling and Shrinkage Mechanisms t-Curve
2011/12/8
Abstract: The application of the Frenkel-Halsey-Hill (FHH) formalism to the water desorption isotherms obtained for the whole range of the activity of water with the pressure membrane device (0.98 < a...
The Effect of Added Polymers on n-Butylammonium Vermiculite Swelling
Interlayer Spacings Neutron Diffraction Osmotic Swelling Phase Transitions Polymers Vermiculite Gels
2011/12/22
Abstract: A 4-component clay-polymer-salt-water system was studied by neutron scattering. The clay-salt-water system consisted of n-butylammonium vermiculite, n-butylammonium chloride and heavy water,...
Relationship Between Cation Exchange Selectivity and Crystalline Swelling in Expanding 2:1 Phyllosilicates
Cation Exchange Selectivity Crystalline Swelling Demixing Fixation Ion Exchange Hysteresis Layer Charge Smectite
2011/12/22
Abstract: A theoretical model describing the interaction between crystalline swelling and cation exchange selectivity is proposed for expanding 2:1 phyllosilicates. The model is based on the assumptio...
Effect of Heating on Swelling and Dispersion of Different Cationic Forms of a Smectite
Cationic Clay Bonding Dispersion Particle Charge Swelling Thermal Treatment X-ray Diffraction
2011/12/27
The effect of heat treatments on the swelling, dispersion, particle charge and particle aggregation of Li-, Na-, K-, Mg-, Ca- and Al-Wyoming bentonite was investigated. Before thermal treatment, unhea...
Swelling Pressure of Montmorillonite Layers versus H-O-H Bending Frequency of the Interlayer Water
Bending Frequency Hydration Infrared Spectroscopy Interlayer Force Interlayer Water Montmorillonite Swelling Pressure
2011/12/27
The in-depth perturbation of vicinal water by the surfaces of montmorillonite layers was investigated by relating the swelling pressure, Π, of the montmorillonite layers to the H-O-H bending frequency...
Model for Crystalline Swelling of 2:1 Phyllosilicates
Crystalline Swelling 2:1 Phyllosilicates
2011/12/27
A macroscopic energy balance model for crystalline swelling of 2:1 phyllosilicates is presented. Crystalline swelling for a static system is modeled by a balance among the potential energies of attrac...
Intercalation of N-Alkyltrimethylammonium into Swelling Fluoro-Mica
Fluoro-Mica Intercalation N-Alkyltrimethylammonium XRD Cation Exchange
2011/12/27
Abstract: Trimethylammonium ions (TMA+) with formula CH3(CH2)n−1 N+(CH3)3, with n = 4, 8, 12, 16, 18 and 22 were intercalated into synthetic Li-fluorotaeniolite (Li-FTN) and Li-fluorohectorite (...
Effect of Clay Charge on Swelling: A Clay-Modified Electrode Study
Charged clays Diffusive transport Iron reduction
2011/12/28
The uniformity of clay films affects the transport of an anionic electroactive probe through the film. When cations other than Na+ are present in the initial swelling of the film (such as native K+ an...
Monte Carlo Simulation of Interlayer Molecular Structure in Swelling Clay Minerals. 2. Monolayer Hydrates
Clay water systems Monte Carlo simulation swelling clays
2011/12/28
Monte Carlo (MC) simulations of interlayer molecular structure in monolayer hydrates of Na-saturated Wyoming-type montmorillonites and vermiculite were performed. Detailed comparison of the stimulatio...
Monte Carlo Simulation of Interlayer Molecular Structure in Swelling Clay Minerals. 1. Methodology
Clay-water systems Monte Carlo simulation Swelling clays
2011/12/28
Monte Carlo (MC) simulations of molecular structure in the interlayers of 2:1 Na-saturated clay minerals were performed to address several important simulation methodological issues. Investigation was...
The Sol Concentration Effect in n-Butylammonium Vermiculite Swelling
CAT DLVO theory Neutron diffraction Osmotic swelling Phase transitions Salt fractionation Trapped salt Vermiculite gels
2011/12/29
The swelling of n-butylammonium vermiculite in water was investigated as a function of the sol concentration (r), the salt concentration (c) and the temperature (T).The interlayer spacing in the gel p...
Swelling Properties of Microbially Reduced Ferruginous Smectite
Dithionite Microorganism Pseudomonas
2011/12/29
Structural Fe in ferruginous smectite (sample SWa-1, Source Clays Repository of the Clay Minerals Society) was reduced by a mixture of five Pseudomonas species of bacteria in a defined Fe-free medium ...