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Thermal Behavior and Decomposition of Intercalated Kaolinite
Infrared spectroscopy Intercalation Kaolinite Thermal Analysis X-ray powder diffraction
2011/12/27
Intercalation complexes of a Hungarian kaolinite were prepared with hydrazine and potassium acetate. The thermal behavior and decomposition of the kaolinite-potassium acetate complex was studied by si...
Fourier Transform Raman Spectroscopy of Kaolinite, Dickite and Halloysite
Dickite FT Raman spectroscopy Halloysite Infrared spectroscopy Kandite clay Kaolinite
2011/12/27
The vibrational modes of clay minerals are uniquely accessible to FT Raman spectroscopy, but this potentially powerful technique has found limited application to the study of clay mineral structure. R...
Kaolinite/Montmorillonite Resembles Beidellite
Beidellite Greene-Kelly test Kaolinite/montmorillonite
2011/12/29
A number of smectitic samples from Almería (SE Spain) were studied by chemical analysis, DTA, TG, XRD (oriented aggregates with ethylene glycol treatment and Greene-Kelly test), FTIR and MAS NMR. Chem...
2H NMR spectra of synthetic deuterated kaolinite have been collected in the temperature range from 150 K to 350 K. Hydroxyl groups show a Pake doublet pattern with an asymmetry factor of 0. They are a...
Preparation and Characterization of Two Distinct Ethylene Glycol Derivatives of Kaolinite
Ethylene glycol Interlamellar modification Kaolinite
2011/12/29
A new, well-ordered, thermally robust ethylene glycol intercalate of kaolinite was formed by refluxing the dimethyl sulfoxide intercalate of kaolinite (Kao-DMSO) with dry ethylene glycol (EG). This ne...
Preparation and Characterization of an 8.4 A Hydrate of Kaolinite
Ethylene glycol Hydrate of kaolinite Intercalation Kaolinite Organo-clay
2011/12/29
A stable 8.4 侌 hydrate of kaolinite was prepared by exchanging ethylene glycol for water in the 10.8 侌 intercalate of ethylene glycol in kaolinite. The hydrate of kaolinite was characterized by XRD, F...
Molecular Structure and Binding Sites of Cobalt(II) Surface Complexes on Kaolinite from X-ray Absorption Spectroscopy
Cobalt EXAFS Kaolinite Sorption Surface complex
2011/12/29
X-ray absorption spectroscopy (XAS) was used to determine the local molecular environment of Co(II) surface complexes sorbed on three different kaolinites at ambient temperature and pressure in contac...
Effects of the Structure of Silica-Alumina Gel on the Hydrothermal Synthesis of Kaolinite
Gel structure Hydrothermal synthesis Kaolinite Nuclear magnetic resonance Silica-alumina gel
2011/12/29
Kaolinite was hydrothermally synthesized from two kinds of silica-alumina gels to examine the effect of the structure of the starting material. Two kinds of gels were prepared by precipitation at diff...
Stable Isotope Geochemistry of Kaolinite from the “White Section,” Black Ridge, Clermont, Central Queensland: Implications for the Age and Origin of the “White Section”
Inversion Isotopic exchange Kaolinite Late Triassic Low δD Weathering
2011/12/29
Kaolinite from the Black Ridge, Clermont, has relatively low δ18O (12.3‰ to 14.8‰) and very low δD values with a large variation (−120‰ to −85‰). Comparison of these data with those from t...
Trimethyl Phosphate Induced Decomposition of Kaolinite
Aluminium alkyl phosphate Hydrolysis Kaolinite Kaolinite decomposition Trimethyl phosphate
2011/12/28
The decomposition of kaolinite by treatment with trimethyl phosphate (TMP) and the composition of the new crystalline phase formed were studied. On hot treatment with TMP, kaolinite forms a crystallin...
The Effect of Surface Modification by an Organosilane on the Electrochemical Properties of Kaolinite
Acidity constants Electrophoresis Kaolinite Modeling Silane Surface charge Surface modification
2011/12/28
The electrochemical properties of kaolinite before and after modification with chlorodimethyl-octadecylsilane have been studied by electrophoretic mobility, surface charge titration, and extrapolated ...
Rietveld Refinement of the Kaolinite Structure at 1.5 K
Crystal structure H positions Kaolinite Low temperature Neutron powder diffraction Rietveld refinement
2011/12/30
The crystal structure of Keokuk kaolinite, including all H atoms, was refined in space group C1 using low-temperature (1.5 K) neutron powder diffraction data (λ = 1.9102 Å) and Rietveld refineme...
Kaolinite: NMF Intercalates
Defect distribution Intercalates Kaolinite N-methyl formamide Particle size
2011/12/30
Bulk and size-fractionated kaolinites from seven localities in Australia as well as the Clay Minerals Society Source Clays Georgia KGa-1 and KGa-2 have been studied by X-ray diffraction (XRD), laser s...
The Chemical Form of Vanadium (IV) in Kaolinite
Electron paramagnetic resonance Isomorphic substitution Kaolinite Vanadium
2011/12/30
A combined application of electron paramagnetic resonance (EPR) and Fourier-transform infrared (FTIR) spectroscopies with thermal methods was used to determine the chemical form of V(IV) in a Georgia ...
The Formation of Illitic Clays from Kaolinite in KOH Solution from 225°C to 350°C
Illite Illite synthesis Kaolinite Kinetics
2011/12/30
Kaolinite was converted into illitic clays in a 2.58 m KOH solution in gold capsules using cold-seal pressure vessels at 225°, 250°, 300°, and 350°C and 500 bars. The XRD shows that the major reaction...
