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Fourier-Transform Infrared Study of Ethylene Glycol Monoethyl Ether Adsorbed on Montmorillonite: Implications for Surface Area Measurements of Clays
Adsorption Attenuated total reflectance spectroscopy Ethylene glycol monoethyl ether Infrared spectroscopy Molecular configuration Montmorillonite
2011/11/25
Abstract: Infrared spectra of 2-ethoxyethanol (ethylene glycol monoethyl ether, EGME) adsorbed on Camontmorillonite were obtained using diffuse-reflectance infrared-Fourier-transform (DRIFT) and atten...
Reactions of Thiophene and Methylthiophenes in the Interlayer of Transition-Metal Ion-Exchanged Montmorillonite Studied by Resonance Raman Spectroscopy
Adsorption Interlayer reaction Montmorillonite Polymerization Raman spectroscopy Thiophene
2011/11/25
Abstract: The adsorption and reaction of thiophene and methylthiophenes in the interlayer of Cu2+- and Fe3+-montmorillonites were investigated by resonance Raman spectroscopy. Thiophene and 3-methyl-t...
Optically Selective Adsorption of α-Amino Acids on Montmorillonite-Cu-l-Lysine Complexes in High-Pressure Liquid Chromatography
Adsorption Amino acid Cu-l-lysine High-pressure liquid chromatography Montmorillonite Optically active ligands
2012/1/11
Optically active cationic complexes adsorbed on montmorillonite can be used for the resolution of racemic mixtures. Montmorillonite-Cu-lysine systems were used as a solid phase in high-pressure liquid...
Vapor-Phase Sorption Kinetics for Tetrahydrofuran, Tetrahydropyran, and 1,4-Dioxan by Al3+- and Cr3+-Exchanged Montmorillonite
Adsorption Cyclic ethers Diffusion Montmorillonite Vapor
2012/1/11
The rate of vapor-phase sorption of tetrahydrofuran (THF), tetrahydropyran (THP), and 1,4-dioxan (DIOX) onto a Wyoming montmorillonite saturated with Al3+ or Cr3+ has been studied by isothermal gravim...
Vapor-Phase Sorption Kinetics for Methanol, Propan-2-OL, and 2-Methylpropan-2-OL on Al3+-, Cr3+-, and Fe3+-Exchanged Montmorillonite
Adsorption Alcohol Diffusion Grain size Mass transfer Montmorillonite
2012/1/11
The rate of sorption of methanol (MeOH), propan-2-ol (i-PrOH), and 2-methyl-propan-2-ol (t-BuOH) onto a Wyoming montmorillonite saturated with Al3+-, Cr3+-, or Fe3+-cations has been studied by isother...
Iron Substitution in Montmorillonite, Illite, and Glauconite by 57Fe Mossbauer Spectroscopy
Glauconite Illite Iron Montmorillonite Mossbauer spectra
2012/1/10
The 57Fe M鰏sbauer spectra of an iron-rich montmorillonite, an illite, and two glauconites were measured and computer-fitted with appropriate Fe3+ and Fe2+ doublet resonances. The broad experimental Fe...
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
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...
Quinoline Sorption on Na-Montmorillonite: Contributions of the Protonated and Neutral Species
Adsorption Cation exchange Montmorillonite Quinoline Vanselow selectivity
2012/1/10
Dilute aqueous solutions of quinoline were contacted with Na-montmorillonite to elucidate the sorption process of the neutral and protonated species. Sorption occurs via a combination of ion exchange ...
X-ray Photoelectron Spectroscopic Study of the Effect of Heating on Montmorillonite Containing Sodium and Potassium Cations
Montmorillonite Noncrystalline Surface composition Thermal treatment X-ray photo-electron spectroscopy X-ray powder diffraction
2012/1/13
The effect of heating on montmorillonites containing exchangeable Na and K has been studied by X-ray photoelectron spectroscopy (XPS). The surface composition of the unheated montmorillonite was consi...
Synthesis and Properties of Titanium Oxide Cross-Linked Montmorillonite
Cross-linked smectite Montmorillonite Pillared interlayer complex Porosity Thermal stability Titanium oxide
2012/1/13
Titanium was introduced into the montmorillonite structure by cation exchange with polymeric Ti cations, formed by partial hydrolysis of TiCl4 in HCl. On further hydrolysis and heating, TiO2 pillars i...
Effect of Adsorbed Iron on Thermoluminescence and Electron Spin Resonance Spectra of Ca-Fe-Exchanged Montmorillonite
Electron spin resonance Iron Montmorillonite Surface adsorption Thermoluminescence
2012/1/13
The electron spin resonance (ESR) spectra and the natural and gamma-induced thermoluminescence (TL) glow curves of a series of variably cation-exchanged Fe-Ca-clays prepared from SWy-1 montmorillonite...
Acidic Properties of Montmorillonite in Selected Solvents
Acetonitrile Acidic properties Dimethylformamide Hydrolysis Montmorillonite Water
2011/11/25
Abstract: Montmorillonites saturated with Al3+, H+-Al3+, and K+ were titrated in H2O, acetonitrile (AN), and dimethylformamide (DMF) to investigate the acidic properties of the clay in these solvents ...
Influence of Citric and Tannic Acids on Hydroxy-Al Interlayering in Montmorillonite
Al polymers Hydroxy-Al interlayer Ion-exchange resin Montmorillonite Organic acid Specific surface
2011/11/25
Abstract: The formation of hydroxy-Al-interlayered montmorillonite was affected by complexing organic acids. Montmorillonite (<2.0 祄) was aged for three months at an initial pH of 5.0 or 6.0 in AlCl3 ...
Apparent and Partial Specific Sorption of Oxine by Montmorillonite and Silica Gel in Binary Mixtures
Adsorption Mixtures Montmorillonite Oxine Silica gel Specific sorption
2012/1/12
Oxine sorption by binary mixtures of montmorillonite and silica gel was studied at pH 5 as a function of oxine concentration and mixture composition. The investigation was made to resolve the problem ...
Reduction of the Cation-Exchange Capacity of Montmorillonite by Take-Up of Hydroxy-Al Polymers
Cation-exchange capacity Hydroxy-Al polymer Interlayer Montmorillonite Smectite
2012/1/12
The cation-exchange capacity (CEC) of Na-Al- and Ca-Al-montmorillonite after neutralization with NaOH or Ca(OH)2 was studied at three Al levels: 10, 25, and 50% of the CEC. Hydroxy-Al polymers were ef...