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Effect of Saturating Cation, pH, and Aluminum and Iron Oxide on the Flocculation of Kaolinite and Montmorillonite
Aggregation Aluminum oxide Critical coagulation concentration Dispersion Flocculation Iron oxide Kaolinite Montmorillonite
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2012/1/11
The effect of pH on the flocculation-dispersion behavior of noncrystalline aluminum and iron oxides, kaolinite, montmorillonite, and various mixtures of these materials was investigated. The clays wer...
Molecular Motions, Surface Interactions, and Stacking Disorder in Kaolinite Intercalates
Dimethyl sulfoxide Electron paramagnetic resonance Formamide Infrared spectroscopy Intercalate Kaolinite N-methylformamide Nuclear magnetic resonance Specific heat
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2012/1/13
Intercalates of Georgia well-crystallized kaolinite with formamide, N-methylformamide (NMF), and dimethylsulfoxide (DMSO) were prepared at room temperature by dispersing the clay in the organic liquid...
Quantification Curves for the X-Ray Powder Diffraction Analysis of Mixed-Layer Kaolinite/Smectite
Ethylene glycol Interstratification Kaolinite/smectite Mixed-layer quantification X-ray powder diffraction
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2012/1/12
X-ray powder diffraction patterns for many interstratified kaolinite/glycolated smectites were calculated by changing combinations of probabilities and transition probabilities of two component layers...
Crystal Structure of Kaolinite: Dimethylsulfoxide Intercalate
Crystal structure Dimethylsulfoxide Infrared spectroscopy Intercalate Kaolinite Neutron powder diffraction Nuclear magnetic resonance X-ray powder diffraction
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2012/2/2
The crystal structure of the kaolinite: dimethylsulfoxide (DMSO) intercalate (P1, a = 5.187(2), b = 8.964(3), c = 11.838(4) 侌, 兛 = 91.53(1)亱, 兝 = 108.59(2), 兞 = 89.92(1)亱) has been determined using sp...
Raman Spectroscopic Study of Kaolinite in Aqueous Suspension
Aqueous suspension Infrared spectroscopy Kaolinite pH Raman spectroscopy
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2012/2/2
The vibrational modes of clay minerals in aqueous suspension are uniquely accessible to Raman spectroscopy, but this potentially powerful approach has not been applied heretofore to study clays in aqu...
Dehydroxylation, Rehydroxylation, and Stability of Kaolinite
Dehydroxylation Gibbs free energy Halloysite Hydralsite Hydrothermal Kaolinite Pyrophyllite
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2011/11/25
Abstract: From hydrothermal experiments three pressure-temperature-time curves have been refined for the system Al2O3-SiO2-H2O and reversal temperatures established for two of the principal reactions ...
Effect of Ion-Pair Formation on Boron Adsorption by Kaolinite
Adsorption Boron Ion pair Ion speciation Kaolinite
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2012/2/2
Boron adsorption on 2-0.2-祄 size fractions of kaolinite at 25??2癈 at pH values between 6.0 and 10.5 was studied. The kaolinite sample was pretreated to remove any surface oxide and hydroxide coatings....
Mechanism of Synthesis of 10-A Hydrated Kaolinite
Dimethyl sulfoxide Fluoride salt Hydrate Kaolinite Methanol Synthesis X-ray powder diffraction
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2012/2/2
The synthesis of 10-侌 hydrated kaolinite was accomplished by: (1) direct reaction of HF with a dimethyl sulfoxide (DMSO)-kaolinite intercalate and water washing; (2) methanol washing of a DMSO-kaolini...
Mechanism Controlling the Volume Change Behavior of Kaolinite
Compression Dipole moment Hydrogen bond Infrared spectroscopy Kaolinite Organic solvents Volume change
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2012/2/2
The possible physical and chemical forces controlling the volume change behavior of kaolinite were ascertained from the sediment volume of kaolinite in various solvents under no external load conditio...
Growth Conditions and Genesis of Spherical and Platy Kaolinite
Crystal growth Kaolinite Morphology Plates Spherules Synthesis
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2012/1/13
Spherical and platy kaolinite crystals were prepared under several hydrothermal conditions. Spherical kaolinite was produced mainly at high solid/water ratio (1/4) and at low temperatures (150°–200°C)...
Characterization of Dehydration-Induced Luminescence of Kaolinite
Dehydration Fluorescent probes Grinding Kaolinite Luminescence
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2012/2/1
Dehydration-induced luminescence (DIL), the emission of light from a clay paste upon dehydration, was characterized experimentally for a colloidal kaolinite. The relationship between total photon coun...
Interpretation of Solid State 13C and 29Si Nuclear Magnetic Resonance Spectra of Kaolinite Intercalates
Dimethylsulfoxide Formamide Hydrazine Intercalate Nuclear magnetic resonance Ordering Pyridine-N-oxide
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2012/1/13
13C and 29Si nuclear magnetic resonance spectroscopy with magic-angle spinning bas been used to study the short-range ordering and bonding in the structures of intercalates of kaolinite with formamide...
Hydrolysis Kinetics of Organic Chemicals on Montmorillonite and Kaolinite Surfaces as Related to Moisture Content
Humic acid Hydrolysis kinetics Kaolinite Montmorillonite Surface acidity Water
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2011/11/25
Abstract: The effect of the surface acidity of montmorillonite and kaolinite on the hydrolysis rate constants of different agricultural chemicals was studied at variable moisture contents. Ethyl aceta...
Adsorption of Molybdate Anion (MoO42−) By Sodium-Saturated Kaolinite
Adsorption Electrolyte Kaolinite Molybdate ion Speciation
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2011/11/25
Abstract: Adsorption of Mo(VI) on 2−0.2-祄 size fraction of sodium-saturated kaolinite at 25 ?2癈 and at a constant pH of 7.00 ?0.05 was studied. The kaolinite sample was pretreated to remove any ...
Synthesis of a 10-A Hydrated Kaolinite
Dimethyl sulfoxide Fluoride Formamide Halloysite Hydrazine Hydroxyl Intercalation Kaolinite
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2011/11/25
Abstract: Hydrated kaolinite (d(001) = 10 侌) can be synthesized by mild healing of a kaolinite-organic suspension, allowing time for the clay to be intercalated by the organic solvent, and then dissol...