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Experimental study of rare earth element partitioning between calcite and sodium chloride solution at room temperature and pressure
rare earth elements lanthanide calcite partition coefficient calcium carbonate
2017/4/11
The rare earth element (REE) partition coefficients between calcite and aqueous solution were obtained experimentally
under the conditions of pH, ionic strength and REE concentration level in the par...
Experimental Clay-Mineral Formation from a Subvolcanic Rock by Interaction with 1 M NaOH Solution at Room Temperature
AEM Analysis Berthierine Interstratification Lizardite NaOH Solution Smectite
2011/12/2
Abstract: The alteration process of a subvolcanic rock with calcic plagioclase, pyroxene, and olivine as major components was investigated by X-ray diffraction (XRD) and analytical and transmission el...
Sound velocities of polycrystalline MgSiO3 -orthopyroxene to 10 GPa at room temperature
Sound velocities polycrystalline MgSiO3 -orthopyroxene temperature
2012/3/31
A polycrystalline sample of MgSiO3-orthopyroxene was hot pressed at a pressure of 4 GPa and temperature of 975 8 C in a multi-anvil apparatus. The recovered specimen has a bulk density within 1% of th...
Effect of the Presence of Aluminum ions in Iron Solutions on the Formation of Iron Oxyhydroxides (FeOOH) at Room Temperature Under Acidic Environment
Akaganeite Aluminum Hydroxy-aluminum ions Iron hydrolysis Transmission electron microscopy X-ray diffraction
2011/12/29
The hydrolytic behavior of Fe solutions at room temperature under acidic conditions was investigated. In the presence of Al ions, with Cl and NO3 as associated anions, the Fe hydrolysis began almost i...
Influence of Al Substitution and Crystal Size on the Room-Temperature Mossbauer Spectrum of Hematite
Aluminum Hematite Iron Mossbauer spectroscopy Particle size
2011/11/25
Abstract: Mossbauer spectra of 15 hematites with Al substitutions between 0 and 10 mole % were taken at room temperature. X-ray powder diffraction indicated dimensions of these hematites in the c-dire...
Room-Temperature Luminescence from Kaolin Induced by Organic Amines
Amine Hydrazine Kaolin Luminescence
2011/11/25
Abstract: Several new, room-temperature luminescent phenomena, resulting from the interaction of kaolin and various amino compounds, have been observed. The emission of light from kaolin pastes (treat...
Clay-Organic Molecule Interactions: Oxidation of Acetaldehyde by Montmorillonite in N2 Atmosphere at Room Temperature
Acetaldehyde Acetate Adsorption Montmorillonite Oxidation
2012/2/10
Oxidation of acetaldehyde molecules adsorbed on Na- and Mg-Wyoming montmorillonite at room temperature (20–25°C) and in N2 atmosphere has been studied by I.R. spectroscopy. A comparison between clay-a...
Kaolinite Crystallization at Room Temperature by Homogeneous Precipitation—III: Hydrolysis of Feldspars
Kaolinite Crystallization Homogeneous Precipitation Hydrolysis of Feldspars
2011/11/18
Abstract: The kaolinite crystallization by homogeneous precipitation with previous hydrolysis of the feldspars added has been followed by pH and potassium concentration measurements. The synthesized p...
Halloysite-Kaolinite Transformation at Room Temperature
Halloysite-Kaolinite Transformation Room Temperature
2012/2/13
Halloysite (metahalloysite) of various particle sizes has been altered with oxalic and EDTA acids, at room temperature and during different periods of time (5–90 days). The oxalic acid attack at first...
Structural Changes in Analcites and Na-P Zeolites Caused by Cation Exchange at Room Temperature and Dehydration Under Controlled pH2O
Analcites Na-P Zeolites Dehydration pH2O
2011/11/16
Although zeolites are usually thought of as substances that undergo continuous water loss without structural change, there have been very few experiments to establish this fact.The present report cove...