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Elemental transport upon hydration of basic schists during regional metamorphism: Geochemical evidence from the Sanbagawa metamorphic belt, Japan
mass transfer fluid flow hydration metamorphism Sanbagawa belt
2017/4/10
Trace element and Sr–Nd–Pb isotopic compositions of basic schists in the Cretaceous Sanbagawa metamorphic belt, a
typical regional metamorphic belt in the circum-Pacific orogeny, have been investigat...
Hydration Kinetics of Quicklime.
Stepwise Hydration of High-Quality Synthetic Smectite with Various Cations
Crystalline Swelling Hydration Interlayer Cation Smectite
2011/12/6
Abstract: Smectites synthesized from experiments at 5.5 GPa and 1500癈 are of high quality, crystals are large at >10 祄, and the 2:1 layers may have a homogeneous charge distribution. Smectite was exch...
Effects of Iron Oxidation State and Organic Cations on Dioctahedral Smectite Hydration
Alkylammonium Ferric Iron Ferrous Iron HDTMA Hydrophilic Surface Hydrophobic Surface Interlayer Cation Oxidation Reduction Surface Hydration Swelling TMA TMPA
2011/12/6
Abstract: Reduction of structural Fe in Na-exchanged dioctahedral smectites decreases swellability in water, but because clay interlayers also collapse in the process the concomitant effect on surface...
Layer Charge Influences on the Hydration of Expandable 2:1 Phyllosilicates
External Surface Hydration Hydration Number Layer Charge SAz-1 SHCa-1 Surface Area SWa-1 Swelling VTx-1
2011/12/7
Abstract: The objective of this study was to investigate the influence of layer charge on the hydration of Mg-saturated expandable 2:1 phyllosilicates. Water retained by 12 Mg-saturated clays at 54% r...
Sate and Location of Water Adsorbed on Clay Minerals: Consequences of the Hydration and Swelling-Shrinkage Phenomena
Clay Paste Fabric Hydration State and Location of Water Swelling and Shrinkage Mechanisms t-Curve
2011/12/8
Abstract: The application of the Frenkel-Halsey-Hill (FHH) formalism to the water desorption isotherms obtained for the whole range of the activity of water with the pressure membrane device (0.98 < a...
Calorimetric Measurement of the Enthalpy of Hydration of Clinoptilolite
Calorimetry Clinoptilolite Energetics Enthalpy Hydration Zeolite
2011/12/22
Abstract: The enthalpy of hydration of natural clinoptilolite was determined by isothermal immersion calorimetry on Ca-, Na- and K-exchanged clinoptilolite (Fish Creek Mountains, Nevada). Heats of imm...
Hydration Behavior of Na-Smectite Crystals Synthesized at High Pressure and High Temperature
High-pressure experiment Hydration Relative humidity Smectite crystal
2011/12/1
Abstract: Hydration behavior of Na-smectite crystals synthesized at a pressure of 5.5 GPa and temperatures of 1400°–1500°C was examined by X-ray powder diffraction at various relative humidities (RH) ...
Hydration States of Smectite in NaCl Brines at Elevated Pressures and Temperatures
Brine Diagenesis Hydration Pressure Smectite Temperature
2012/1/12
A high-pressure, high-temperature cell was used to monitor the basal X-ray powder diffraction spacing of Na-saturated Cheto montmorillonite in contact with NaCl solutions at temperatures as high as 20...
Hydration State of Cu2+ in Mixed Cu2+-Hexadecylpyridinium Montmorillonite by Electron Spin Resonance
Cation exchange Copper Electron spin resonance Hexadecylpyridinium Hydration Montmorillonite
2012/2/6
Electron spin resonance (ESR) spectra of Cu2+-hexadecylpyridinium (HDP) montmorillonites were investigated as a function of HDP+ content and the hydration state of Cu2+ at relative humidities of p/p0 ...
STABILITY OF PARATHION ON ATTAPULGITE AS AFFECTED BY STRUCTURAL AND HYDRATION CHANGES
Attapulgite Dehydration Infrared spectroscopy Isomerization Parathion Scanning electron microscopy Thermal treatment
2011/11/15
Abstract--The structure and hydration status of attapulgite clay after heating at elevated temperatures and the stability of parathion on these clays was studied. Using infrared spectroscopy and scann...
Stretching Frequencies of Structural Hydroxyls of Hectorite and K-Depleted Phlogopite as Influenced by Interlayer Cation and Hydration
Stretching Frequencies Structural Hydroxyls Hectorite K-Depleted Phlogopite Interlayer Cation Hydration
2012/2/20
The frequencies of structural OH stretching vibrations in swelling trioctahedral minerals such as hectorite or K-depleted phlogopite depend on the ionic form and hydration of the sample. The trioctahe...
Surface Acidity of Smectites in Relation to Hydration, Exchangeable Cation, and Structure
Surface Acidity Smectites Hydration Exchangeable Cation Structure
2012/2/21
Equilibrium studies on clay films exposed to NH3 and H2O vapors demonstrate the effect of exchangeable cations on surface acidity and its relationship to hydration. At a relative humidity of 98 per ce...
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...
X-ray Diffraction Band Profiles of Montmorillonite—Influence of Hydration and of the Exchangeable Cations
X-ray Diffraction Band Profiles Montmorillonite Hydration
2011/11/16
Previous studies of diffraction band profiles of montmorillonite are extended to the 13, 20 band which, for reasons discussed, is more sensitive to structural details than the diffraction bands consid...