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Dimepiperate Adsorption and Hydrolysis on Al3+-, Fe3+-, Ca2+-, and Na+-Montmorillonite
Adsorption Dimepiperate Hydrolysis Infrared spectroscopy Interlayer cations Montmorillonite Pesticides
2011/12/29
The adsorption of the herbicide dimepiperate S-(α,α-dimethylbenzyl)-1-piperidinecarbothioate on homoionic Fe3+-, Al3+-, Ca2+-, and Na+-montmorillonite was studied in aqueous medium. The adsorption is ...
Pillared Clays Prepared from the Reaction of Chromium Acetate with Montmorillonite
Chromia Montmorillonite Pillaring
2011/12/29
Refluxing chromium (III) acetate with a Na+-montmorillonite suspension gives rise to the intercalation of linear Cr(III) polyhydroxo-acetate oligomers. Thermally stable chromia pillared montmorillonit...
Modeling of H+ and Cu2+ Adsorption on Calcium-Montmorillonite
Adsorption Copper Modeling Montmorillonite
2011/12/29
The interaction of H+- and Cu2+-ions with Ca-montmorillonite was investigated in 0.1 mol/dm3 solutions of Ca(CIO4)2 at 298.2 K by potentiometric titrations using both glass electrodes (for H+) and ion...
Vibrational Probe Studies of Water Interactions with Montmorillonite
Cation exchange Desorption isotherm FTIR Gravimetric Montmorillonite Physisorption • Water
2011/12/31
Interaction of water with montmorillonite exchanged with Na+, K+, Co2+, and Cu2+ cations as a function of water content was examined using an FTIR/gravimetric cell designed to collect spectroscopic an...
Polymerization and Transalkylation Reactions of Toluene on Cu(II)-Montmorillonite
FTIR GC/MS Gel permeation chromatography Montmorillonite Polymerization Toluene Transalkylation
2011/12/31
Products resulting from the reaction of toluene with Cu(II)-montmorillonite were analyzed using GC/MS, HPLC/MS, GPC, and FTIR methods. Numerous oligomers of toluene were observed, extending at least a...
Montmorillonite-Salt Interactions at 550°C
Carbonates Hydroxides Montmorillonite Solid-state reaction
2011/12/30
The reactions between montmorillonite and carbonates and hydroxides of Na, K and Li were studied at 550°C as a function of salt content and time. The reactions were found to be rapid with a half-time ...
X-ray Diffraction Patterns of Montmorillonite Oriented Films Exchanged with Enantiomeric and Racemic Tris(2,2亴-Bipyridyl)Ruthenium(II)
Double layer Enantiomorphs Intercalation Monolayer Montmorillonite Surface area Tris(2,2亴-bipyridyl)ruthenium(II) X-rays
2012/1/4
X-ray diffraction patterns of oriented films of montmorillonite containing enantiomeric tris(2,2亴-bipyridyl) ruthenium(II) chloride (Ru(bpy)22+) show a peak corresponding to basal spacings of approxim...
Interaction of the Herbicide Acifluorfen with Montmorillonite: Formation of Insoluble Fe3+, Al3+, Cu2+, and Ca2+ Complexes
Adsorption Acifluorfen Infrared spectroscopy Interlayer cations Montmorillonite Pesticides
2011/11/30
Abstract: Analytical, spectroscopic, and X-ray powder diffraction techniques were used to investigate the adsorption of the herbicide sodium acifluorfen (acifluorfen = 5-[2-chloro-4-(trifluoromethyl)p...
X-ray Photoelectron Spectroscopic Study of Cobalt(II) and Nickel(II) Sorbed on Hectorite and Montmorillonite
Cation exchange Cobalt Hectorite Ligand exchange Montmorillonite Nickel X-ray photoelectron spectroscopy
2011/11/30
Abstract: The safe disposal of 60Co, 63Ni, and 59Ni has required considerable information on the interactions of Co2+ and Ni2+ with clay minerals in the geosphere. X-ray photoelectron spectroscopy (XP...
Use of Methylene Blue and Crystal Violet for Determination of Exchangeable Cations in Montmorillonite
Cation exchange capacity Crystal violet Exchangeable cations ICP Methylene blue Montmorillonite Organic cations
2012/1/4
A procedure for the determination of cation exchange capacity (CEC) and the amounts of exchangeable cations adsorbed to montmorillonite is proposed. The method consists of a single incubation of the c...
Flocculation of Illite/Kaolinite and Illite/Montmorillonite Mixtures as Affected by Sodium Adsorption Ratio and pH
Flocculation value Critical coagulation concentration Dispersion Aggregation
2012/1/4
The effect of electrolyte concentration, exchangeable sodium percentage (ESP), sodium adsorption ratio (SAR), and pH on the flocculation-dispersion behavior of 50/50 mixtures of reference illite with ...
Preparation and Properties of Large-Pore La-Al-Pillared Montmorillonite
Aluminum Cross-linked smectite Lanthanum Montmorillonite Pillared interlayer complexes X-ray powder diffraction
2011/12/31
Large-pore La-Al-pillared montmorillonite was prepared by reacting montmorillonite with hydrothermally treated mixtures of aluminum chlorohydrate and lanthanum chloride. The large-pore La-Al-pillared ...
Interactions of Citric Acid and Synthetic Hydroxy-Aluminum Montmorillonite
Adsorption Citric acid Hydroxy-Al Montmorillonite X-ray powder diffraction
2011/12/31
Hydroxy-Al-montmorillonite was prepared by mixing Na-Wyoming montmorillonite with Al(OH)2.5 polycations and aging the mixture for 10 days. The reactions of this complex with citric acid at millimolar ...
Rheological Behavior of Na-Montmorillonite Suspensions at Low Electrolyte Concentration
Electrolyte Montmorillonite Particle attraction Rheology Shear Viscosity
2011/11/30
Abstract: The prevailing concept that positive-edge to negative-face attraction accounts for the rheological behavior of montmorillonite suspensions at low electrolyte concentration was investigated. ...
Adsorption of Hydroxy-Al Polycations and Destabilization of Illite and Montmorillonite Suspensions
Adsorption Flocculation Hydroxy-Al Illite Montmorillonite Point of zero charge
2012/1/4
Water-infiltration characteristics of soil can be improved by preventing clay dispersion. The present study determined the adsorption properties of hydroxy-Al polycations (Al-p) and their relation to ...