搜索结果: 1-8 共查到“地质学 Noncrystalline”相关记录8条 . 查询时间(0.046 秒)
Analytical Electron Microscopic Study of the Noncrystalline Products Formed at Early Weathering Stages of Volcanic Glass
Formation Process Halloysite Noncrystalline Material Pumice Weathering Product
2011/12/22
Abstract: Formation processes of weathering products of pumice collected from a rhyolitic pyroclastic flow deposit were investigated by X-ray powder diffraction (XRD), scanning electron microscopy (SE...
Effect of Cysteine and Manganese on the Crystallization of Noncrystalline Iron(III) Hydroxide at pH 8
Crystallization Cysteine Ferrihydrite Goethite Iron oxides Manganese
2011/11/30
Abstract: To provide a greater understanding of the crystallization of iron oxides under natural aqueous conditions, the combined effect of an inorganic ion (Mn2+) and a reducing organic ligand (L-cys...
Kinetics of Dissolution of Noncrystalline Oxides and Crystalline Clay Minerals in a Basic Tiron Solution
Chlorite Dissolution Kaolinite Montmorillonite Noncrystalline Sepiolite Tiron solution
2012/1/4
The dissolution behavior of five noncrystalline oxides, montmorillonite, kaolinite, chlorite, and sepiolite in a basic tiron solution was studied at pH 10.5 and 80°C. The results show that for montmor...
Identification of Noncrystalline (Fe,Cr)(OH)3 by Infrared Spectroscopy
Chromium hydroxide Goethite Infrared spectroscopy Iron hydroxide Noncrystalline Solid solution
2012/1/4
Iron-chromium hydroxides are important solid phases governing the aqueous concentrations of Cr(III) in soils and fly ashes. Although direct identification of noncrystalline (Fe,Cr)(OH)3 is difficult, ...
Quantification of Crystalline and Noncrystalline Material in Ground Kaolinite by X-ray Powder Diffraction, Infrared, Solid-State Nuclear Magnetic Resonance, and Chemical-Dissolution Analyses
Chemical dissolution Dry grinding Infrared spectroscopy Kaolinite Noncrystalline Nuclear magnetic resonance X-ray powder diffraction
2012/1/5
The capabilities of X-ray powder diffraction (XRD), infrared absorption (IR), solid-state magic-angle-spinning nuclear magnetic resonance (MAS-NMR), and chemical dissolution methods were assessed for ...
Noncrystalline Fe-Si-Al-Oxyhydroxides
Gels • High-resolution transmission electron microscopy • Iron • Morphology • Noncrystalline oxyhydroxides
2011/11/25
Abstract: High-resolution transmission electron microscopy of noncrystalline Fe-Si-Al-oxyhydroxide gels shows a common structure of hollow packed spheres having external diameters ranging from 50 to 1...
Hydrothermal Formation of a Kaolinite-Like Product from Noncrystalline Aluminosilicate Gels
Aluminosilicate Gel Infrared spectroscopy Kaolinite Synthesis X-ray powder diffraction
2012/2/8
Noncrystalline aluminosilicate gels with Al2O3/(Al2O3 + SiO2) weight ratios from 0.3 to 0.5 were reacted in 0.1 N KOH at temperatures varying from 125° to 175°C. The pH of the solutions dropped sharpl...
Determination of Noncrystalline Soil Components by Weight Difference after Selective Dissolution
Allophane Noncrystalline Quantification Selective dissolution Soil Weight loss
2011/11/22
Abstract: A procedure based on loss of weight after selective dissolution analysis (SDA) and washing with (NH4)2CO3 was developed for estimating the noncrystalline material content of soils derived fr...