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Amorphous Aluminum Hydroxide Formed at the Earliest Weathering Stages of K-Feldspar
Aluminum hydroxide Gibbsite Halloysite K-feldspar Weathering product
2011/12/27
Weathering products formed on the surface of K-feldspar in Yakushima Island, Japan were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron micros...
Preparation of Terminal Phenolic Hydroxyl Triazine Dendrimer and its Combination Tanning Properties with the Aluminum Salts
1,3,5-Benzenetriol Chrome-Tanning Assistant Cyanuryl Chloride Hyperbranched Polymer Leather
2011/11/23
Terminal phenolic hydroxyl triazine dendrimer (HTHP) was prepared by putting cyanuryl chloride and 1,3,5-benzenetriol into acetone and then adding K2CO3 into the mixture as deacid reagent, which is ca...
Effect of Kaolinite and Sulfate on the Formation of Hydroxy-Aluminum Compounds
Bayerite CMS Clay KGa-2 Gibbsite Hydroxysulfate Noncrystalline Compounds Nordstrandite
2011/12/2
Abstract: OH-Al solutions were prepared by adding appropriate amounts of NaOH to AlCl3 to obtain OH/Al mole ratios of 2.0, 2.5, 2.7, 3.0, and 3.3 in the final suspension. Solid Na2SO4 and Georgia kaol...
Oxygen-Isotope Fractionation between Aluminum-Hydroxide Phases and Water at <60C: Results of Decade-Long Synthesis Experiments
Aluminum Hydroxides Fractionation Factor Gibbsite Oxygen Isotope Synthesis
2011/12/6
Abstract: Oxygen-isotope data were obtained for synthetic aluminum-hydroxide phases precipitated over 65–125 mo and have been compared to results from similar experiments conducted for 3–56 mo. The Al...
Five-Coordinate Aluminum in Allophane
Allophane Five-coordinate Aluminum NMR Spectroscopy Silica Springs
2011/12/2
Abstract: Samples of Silica Springs allophane from Tongariro National Park, New Zealand, having Al/Si atomic ratios in the range 1.1–1.9, were studied by 27Al nuclear magnetic resonance (NMR) spectros...
Ambient-Temperature Synthesis, Evolution, and Characterization of Cobalt-Aluminum Hydrotalcite-Like Solids
Anionic Clay Cation Ordering Coprecipitation EXAFS Hydrotalcite ICP-MS Solubility Product TEM Metal Contamination Solid Solution Interstratification
2011/12/7
Abstract: Double hydroxide solids precipitated homogeneously from three laboratory-synthesized aqueous solutions that simulated mildly contaminated surface or groundwater. Over a limited pH range, pre...
Molecular cluster models of aluminum oxide and aluminum hydroxide surfaces
Molecular cluster models aluminum oxide aluminum hydroxide surfaces
2012/4/1
Ab initio, molecular orbital calculations for two different Hartree-Fock basis levels were performed on clusters in the system Al-O-H, and tested by comparing derived vibrational frequencies to the me...
Calculated role of aluminum in the incorporation of ferric iron into magnesium silicate perovskite
Calculated role aluminum incorporation ferric iron magnesium silicate perovskite
2012/4/1
An atomistic computer simulation study was undertaken to address the role of Al in the substitution of ferric iron into magnesium silicate perovskite, MgSiO
3. Calculated substi-tution and vacancy en...
Molecular Simulations of Montmorillonite Intercalated with Aluminum Complex Cations. Part II: Intercalation with Al(OH)3-Fragment Polymers
Al-Cation Gibbsite-like Polymers Intercalation Molecular Simulations Montmorillonite
2011/12/8
Abstract: The Crystal Packer module in the Cerius2 modeling environment has been used to study the structure of montmorillonite intercalated with Al(OH)3-fragment (gibbsite-like) polymers. Basal spaci...
Molecular Simulations of Montmorillonite Intercalated with Aluminum Complex Cations. Part I: Intercalation with [Al13O4(OH)24+x(H2O)12−x](7−x)+
Al-Cations Intercalation Molecular Simulation Montmorillonite Structure
2011/12/8
Abstract: The structure of montmorillonite intercalated with [Al13O4(OH)24+x(H2O)12−x](7−x)+ cations ( A l 13 (7−x)+ for short), where x = 0, 2 and 4, has been studied using the Ceri...
Gallium and Chromium Substitution for Aluminum in Synthesized Beidellite
Beidellite Synthesis Chromium Gallium Isomorphous Substitution
2011/12/8
Abstract: The hydrothermal synthesis of Mg-beidellite in which limited amounts of Ga and Cr are clearly shown to be incorporated into nonexchangeable positions in the clay layer framework is reported ...
In Situ Infrared Speciation of Adsorbed Carbonate on Aluminum and Iron Oxides
Attenuated Total Reflectance-Fourier Transform Infrared Carbonate Adsorption Electrophoretic Mobility Infrared Point of Zero Charge Point of Zero Net Proton Charge X-ray Diffraction
2011/12/22
Abstract: Surface adsorption mechanisms of dissolved inorganic carbon species on soil minerals are not well understood. Traditional infrared (IR) study of adsorbed species of inorganic carbon using ai...
An Aluminum Pillared Montmorillonite with Fast Uptake of Strontium and Cesium from Aqueous Solutions
Cation Exchange Capacity Delamination Pillared Clay Radiocesium Radiostrontium Uptake
2011/12/22
Abstract: The uptake of Sr and Cs by 2 types of aluminum pillared layered clays (Al-PILC), a reference sample (AZA) and a specially tailored sample (FRAZA), were investigated. The AZA sample was prepa...
Effect of Time and Temperature on the Chemical Composition and Crystallization of Mixed Iron and Aluminum Species
Aluminum Crystallization Gibbsite Iron
2011/12/1
Abstract: We studied the influence of time ageing (up to 120 d at 50°C or 30d at 95°C) on the mineralogical and chemical composition of hydrolytic species of mixed aluminum and iron samples formed at ...
Formation of Aluminum Hydroxides as Influenced by Aluminum Salts and Bases
Aluminum hydroxides Pseudoboehmite Sulfates
2011/12/1
Abstract: The influence of different ions in the formation of Al(OH)3 polymorphs has been studied experimentally by promoting stoichiometric reactions between the aluminum salts (AlCl3, Al(NO3)3, Al2(...