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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
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...
Adsorption of Cations on Imogolite and Their Effect on Surface Charge Characteristics
Electrophoretic mobility Microelectrophoresis Noncrystalline aluminosilicates Points of zero charge Potentiometric titration PZC PZNPC PZSE
2011/12/31
Noncrystalline aluminosilicates termed allophane and imogolite are common constituents of spodosols, soils derived from volcanic ash, and many inceptisols. The surface charge characteristics of their ...
Alkali Cation Selectivity and Surface Charge of 2:1 Clay Minerals
Hard/soft acid/base model Ion exchange Isomorphic substitution Layer charge Lewis acid Lewis base Smectite Surface complexation Vermiculite
2011/12/31
A critical demand in environmental modeling and a desirable but elusive goal of research on the ion exchange properties of the charged solid surface has been to determine the selectivity coefficient f...
ALKALI CATION SELECTIVITY AND SURFACE CHARGE OF 2:1 CLAY MINERALS
Hard/soft acid/base model Ion exchange Isomorphic substitution Layer charge Lewis acid
2011/11/15
A critical demand in environmental modeling and a desirable but elusive goal of research on the ion exchange properties of the charged solid surface has been to determine the selectivity coefficient f...
Effect of Negative Surface-Charge Densities of Smectite Clays on the Adsorption Isotherms of Racemic and Enantiomeric Tris(2,2′-Bipyridyl)Ruthenium(II) Chloride
Adsorption Enantiomorphs Racemic pairs Smectite Surface charge Tris(2,2′-bipyridyl)ruthenium(II)
2012/1/5
The level of adsorption of enantiomeric tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+ by seven different smectite samples was found to be controlled by the total surface area of the clay. The level co...
Effects of Reduction and Reoxidation of Structural Iron on the Surface Charge and Dissolution of Dioctahedral Smectites
Dissolution Iron Nontronite Oxidation Reduction Smectite Surface area
2012/2/6
The effect of Fe oxidation state on the surface charge (CEC) and solubility of smectites were studied using the <2-祄, Na+-saturated fraction of an Upton, Wyoming; a Czechoslovakian; and a New Zealand ...
Influence of Silica Content on the Surface Charge Characteristics of Allophanic Clays
Allophane Andisols Desilication Soils Specific surface Zero point of charge
2012/2/7
The surface and charge characteristics of 6 allophanic clays originating from a climatosequence of Andisols have been studied by titration, ion retention, surface area, and reactivity measurements. Se...
Surface Charge Characteristics of Amorphous Aluminosilicates
Surface Charge Characteristics Amorphous Aluminosilicates hydrous alumina
2012/2/13
The surface charge characteristics of a range of synthetic amorphous aluminosilicates, hydrous alumina, hydrous silica and two allophanic soil clays were determined by the retention of Na+ and Cl as c...
Surface Charge Density Determination of Micaceous Minerals by 235U Fission Particle Track Method
Micaceous Minerals 235U Fission surface charge density mica
2012/2/13
The surface charge density of mica (001) cleavages was determined by counting the number of fission particle tracks in a given area of a 6-mm muscovite disc replica with optical and scanning electron ...
Surface Charge Variation in Aging Ferric Hydroxide
Surface Charge Variation Aging Ferric Hydroxide titration technique
2012/2/13
The variation with time of exchangeable surface charge of amorphous ferric hydroxide in aqueous suspension was monitored by a titration technique. After 120 days, the surface charge of suspensions wit...
Surface Charge Characterization of Layer Silicates by Competitive Adsorption of Two Organic Divalent Cations
Surface Charge Characterization Layer Silicates Competitive Adsorption Two Organic Divalent Cations
2012/2/20
Diquat2+ (1,1′-ethylene-2,2′-dipyridinium ion) and paraquat2+ (1,1′-dimethyl-4,4′-dipyridinium ion) were competitively adsorbed by Na-saturated kaolinites, smectites and expanded and collapsed vermicu...