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Surface Charge Properties of Kaolinite
Dissolution Kaolinite Point of Zero Charge Potentiometric Titration Proton Surface Charge Structural Charge Surface Charge Surface Chemistry
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2011/12/1
Abstract: The surface charge components of 2 Georgia kaolinites of differing degrees of crystallinity (KGa-1 and KGa-2) were determined using procedures based on charge balance concepts. Permanent str...
Structure Refinement of Synthetic Deuterated Kaolinite by Rietveld Analysis Using Time-of-Flight Neutron Powder Diffraction Data
Crystal Structure Kaolinite Neutron Powder Diffraction Rietveld Refinement Synthetic Kaolinite
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2011/12/22
Abstract: The crystal structure of synthetic deuterated kaolinite was refined by Rietveld analysis using time-of-flight (TOF) neutron powder diffraction data. For non-hydrogen atoms, C1 symmetry was a...
Effect of Interaction Between Clay Particles and Fe3+ Ions on Colloidal Properties of Kaolinite Suspensions
Colloid Electron Microscopy Flocculation Iron Kaolinite Sedimentation Zeta Potential
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2011/12/22
Abstract: Fine kaolinite suspensions were mixed with unaged or aged FeCl3 in this experiment. The interaction between clay particles and Fe3+ hydrolysis products was studied by transmission electron m...
NMR Study of Dynamics and Evolution of Guest Molecules in Kaolinite/Dimethyl Sulfoxide Intercalation Compound
2H NMR 13C NMR Dimethyl Sulfoxide Intercalation Compound Kaolinite Layered Silicate
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2011/12/22
Abstract: Motion of the guest molecules in kaolinite/dimethyl sulfoxide (DMSO) intercalation compounds Al2Si2O5(OH)4?CH3)2SO has been studied by means of solid-state nuclear magnetic resonance (NMR) i...
Thermal Analysis as a Tool for Determining and Defining Spherical Kaolinite
Spherical Kaolinite Synthesis Thermal Analysis
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2011/12/22
Abstract: Samples containing spherical kaolinite, synthesized under hydrothermal conditions (T = 200 癈; t = 24 h, 192 h, 720 h) from gel with Si/Al = 0.84, were studied by differential thermal analysi...
Paramagnetic Fe3+: A Sensitive Probe for Disorder in Kaolinite
Disorder Electron Paramagnetic Resonance (EPR) Fe3+ Irradiation Kaolinite Point Defect
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2011/12/22
Abstract: The Fe3+ substituted for Al3+ at the 2 octahedral positions is one of the most common impurities in the kaolinite structure detected by electron paramagnetic resonance (EPR). Evidence has be...
All-atom ab initio energy minimization of the kaolinite crystal structure
All-atom ab initio energy minimization kaolinite crystal structure
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2012/4/5
Calculationsthatminimizetheenergyandoptimizethegeometryofallatomiccoor-
dinatesfortwoproposedkaolinitecrystalstructureswereperformedusinga?rst-princi-
ples,quantumchemicalcodebasedonlocaldensityfunc...
Wettability Contrasts in Kaolinite and Illite Clays: Characterization by Infrared and X-ray Absorption Spectroscopies
Adsorption Clay EXAFS Illite Infrared Kaolinite Wettability XANES
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2011/12/9
Abstract: A reservoir rock is a porous geological formation in contact with 2 liquids, brine and oil. An improved knowledge of rock wettability is of primary importance to estimate the amount of crude...
Experimental Transformation of Kaolinite to Halloysite
Halloysite Hydration Intercalation Kaolinite Rolling Tetrahedral Rotation
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2011/12/27
A well-characterized kaolinite has been hydrated in order to test the hypothesis that platey kaolinite will roll upon hydration. Kaolinite hydrates are prepared by repeated intercalation of kaolinite ...
Influence of Citric Acid and Glycine on the Adsorption of Mercury (II) by Kaolinite Under Various pH Conditions
Adsorption Kaolinite Kinetics Mercury Organic acids pH PZC Speciation
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2011/12/1
Abstract: This investigation was carried out to study the effect of different concentrations of citric acid and glycine, which are common in freshwaters, on the kinetics of the adsorption of Hg by kao...
The Dehydroxylation of the Kaolinite Clay Minerals using Infrared Emission Spectroscopy
Dehydroxylation Dickite Emission Halloysite Hydroxyl Infrared Kandite Kaolinite Mechanism of dehydroxylation
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2011/12/27
The dehydroxylation of a series of the kaolinite clay minerals, kaolinite, halloysite and dickite, has been investigated by Fourier transform in situ infrared emission spectroscopy over a temperature ...
Modeling Arsenate Competitive Adsorption on Kaolinite, Montmorillonite and Illite
Arsenate competitive adsorption Illite Kaolinite Montmorillonite
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2011/12/27
Abstract: The adsorption of arsenate (As(V)) on kaolinite, montmorillonite and illite was investigated at varying pH and competing anion concentration while holding As(V) concentration (6.7 ?10−...
Effects of Acidity on the Hydrothermal Synthesis of Kaolinite from Silica-Gel and Gibbsite
Crystallite size Crystallization Hydrothermal synthesis Kaolinite pH Stacking fault
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2011/12/27
Abstract: A comparative study is reported in which kaolinite has been hydrothermally synthesized at several pH conditions. The syntheses were carried out at 220 亱C for 3 to 10 d with distilled water o...
Fe ordering in kaolinite: Insights from 29Si and 27Al MAS NMR spectroscopy
Fe ordering kaolinite Insights 29Si 27Al MAS NMR spectroscopy
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2012/4/5
Kaolinite-richsamples wereselectedfor 27 Aland 29SiMASNMRstudy to explore the effectofFeontheir spectraandprovide insight into the nature ofFeorderingin kaolinite. Initial characterization bychemicala...
Morphology of Kaolinite Crystals Synthesized Under Hydrothermal Conditions
Crystal growth Electron microscopy Kaolinite Laths Morphology Plates Spherules Synthesis
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2011/12/28
Scanning electron microscopy has revealed the presence of spherical, lath and platy kaolinite in gels with Si/Al atomic ratio ranging from 1.84 to 0.76 that are hydrothermally treated under different ...