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The Influence of Heat-Stable Intercalate on the Rate of Dehydroxylation of Smectite
Activation energy Dehydroxylation Intercalate Reaction rate constant Smectite
2012/2/10
The rates of dehydroxylation of smectites intercalated with the decomposition products of Ni(phen)3SO4 are from 2 to 4 times greater than those of clays without the heat-stable intercalate. These resu...
Acetamide and Polyacrylamide Adsorption onto Clays: Influence of the Exchangeable Cation and the Salinity of the Medium
Acetamide Adsorption Montmorillonite Polyacrylamide Saline Media
2012/2/10
The adsorption of acetamide and partly hydrolyzed polyacrylamides onto montmorillonite has been investigated with emphasis on the valency of the exchangeable cation of the clay and the ionic strength ...
The Influence of Aluminum on the Formation of Iron Oxides. IV. The Influence of [Al], [OH], and Temperature
Aluminum Ferrihydrite Goethite Hematite Iron oxides
2012/2/9
Ferrihydrite was transformed to goethite and/or hematite at various temperatures, [OH], and [Al]. Increasing temperature and [Al] favored hematite, increasing [OH] favored goethite. A given [Al] induc...
The Influence of Aluminum on Iron Oxides. Part II. Preparation and Properties of Al-Substituted Hematites
Aluminum Ferrihydrite Goethite Hematite Iron
2012/2/9
Aluminum-substituted hematites (Fe2−xAlxO3) were synthesized from Fe-Al coprecipitates at pH 5.5, 7.0, and in 10−1, 10−2, and 10−2 M KOH at 70°C. As little as 1 mole % Al suppr...
The Influence of Aluminum on Iron Oxides. Part I. The Influence of Al on Fe Oxide Formation from the Fe(II) System
Aluminum Ferrihydrite Goethite Iron Lepidocrocite Maghemite
2012/2/10
The influence of Al on the products formed by aerial oxidation at pH 5.5–7 and 20°C of Fe(II) chloride, sulfate and carbonate solutions, was examined. In all cases Al at levels Al/Al + Fe = 0.09–0.30 ...
The Influence of the Activity of Water on the Phase Composition of Aluminum Hydroxides Formed by Reaction of Amalgamated Aluminum with Water
Alumina Aluminum Bayerite Hydroxide Pseudoboehmite Water
2012/2/10
The influence of the activity of water on the phase composition of aluminum hydroxides obtained by reaction of amalgamated aluminum with water has been studied. The reaction was carried out in solutio...
The Exothermic Reaction of Metakaolinite in the Presence of Mineralizers. Influence of Crystallinity
Exothermic Reaction Metakaolinite Mineralizers. Influence Crystallinity
2012/2/13
This paper presents further results concerning the nature of the exothermic reaction of meta-kaolinite near 950°C. In a previous work (Lemaitre et al., 1975), we proposed that the exothermic effect ha...
The Influence of Hydroxyl Orientation, Stacking Sequence, and Ionic Substitutions on the Interlayer Bonding of Micas
Hydroxyl Orientation Stacking Sequence Ionic Substitutions Micas
2012/2/13
Hydroxyl orientation has a major influence on the strength of the ionic interlayer bonding in micas because of the strong repulsion between the hydrogen and the interlayer cation (IC). In order to det...
Scan Electron Micrographs of Kaolins Collected from Diverse Origins—III. Influence of Parent Material on Flint Clays and Flint-Like Clays
Scan Electron Micrographs Kaolins Diverse Origins Flint-Like Clays
2012/2/13
The nature of the parent material from which flint clay or flint-like clay is derived may modify the texture of the clay as observed by SEM. Flint clays occurring in Pennsylvanian-age swamp basins int...
The Influence of Crystallite Size on the Apparent Basal Spacings of Kaolinite
Crystallite Size Apparent Basal Spacings Kaolinite
2012/2/13
For very small crystallites diffraction theory shows not only broadening of powder lines, but generally also a shift of the line position, depending on the change of the structure factor over the rang...
The Influence of the Christiansen Effect on I.R. Spectra of Powders
Christiansen I.R. Spectra Powders
2012/2/15
The Christiansen effect appears in the i.r. spectrum of powders embedded in a solid, liquid or air matrix as an apparently anomalous transmittance (Christiansen peak) of the incident electromagnetic r...
The Influence of Silicate on the Transformation of Lepidocrocite to Goethite
Silicate Transformation Lepidocrocite Goethite
2012/2/17
The mechanism of the transformation of lepidocrocite (γFeOOH) to goethite (αFeOOH) has previously been established and the effect of silicate on the transformation was investigated. Rather than comple...
Structural Charge Site Influence on the Interlayer Hydration of Expandable Three-Sheet Clay Minerals
Interlayer Hydration Expandable Three-Sheet Clay Minerals
2011/11/17
Abstract: Previous investigations have demonstrated the influences of interlayer cation composition, relative humidity, temperature, and magnitude of interlayer surface charge on the interlayer hydrat...
Formation of Hydroxy-Al and -Fe Interlayers in Montmorillonite and Vermiculite: Influence of Particle Size and Temperature
Formation Hydroxy-Al -Fe Interlayers Montmorillonite Vermiculite Particle Size Temperature
2012/2/21
Hydroxy-Al and -Fe interlayers were prepared in 乬mono-mineralic乭 fine and coarse clay montmorillonite and coarse clay and silt vermiculite at 3亱C and 21亱C. The formation of hydroxy interlayers was eva...
The Influence of Alkaline Solutions on the Alteration of the Clay Minerals
Alkaline Solutions Alteration of the Clay Minerals
2011/11/16
Abstract: The influence of an alkaline environment on clay mineral alterations in the laboratory was studied by means of one-dimensional structural analyses. Samples of illite, illite-mixed-layered ma...