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Thermochemistry of stuffed quartz-derivative phases along the join LiAlSiO4-SiO2
stuffed quartz-derivative phases join LiAlSiO4-SiO2
2012/4/1
Enthalpies of drop-solution (?H ) of a suite of stuffed quartz-derivative phases with the compo-drop-soln
Al Si O (0 ? x ? 1) have been measured in molten 2PbO°§ O at 974 K. Substitution of
sition...
Use and Limitations of Second-Derivative Diffuse Reflectance Spectroscopy in the Visible to Near-Infrared Range to Identify and Quantify Fe Oxide Minerals in Soils
Crystal Field Bands Diffuse Reflectance Spectroscopy Goethite Hematite Intervalence Charge Transfer Iron Oxides Magnetite
2011/12/8
Abstract: We measured the visible to near-infrared (IR) spectra of 176 synthetic and natural samples of Fe oxides, oxyhydroxides and an oxyhydroxysulfate (here collectively called “Fe oxides”), and of...
Relationship among Derivative Spectroscopy, Color, Crystallite Dimensions, and Al Substitution of Synthetic Goethites and Hematites
Aluminum Color Fiber-optic Doppler anemometry Goethite Hematite Visible spectroscopy
2012/1/13
Nine hematites and 22 goethites were synthesized by a variety of methods to obtain monomineralic samples having a range of Al substitutions and particle sizes. The second derivative of absorbance and ...
Synthesis of the Trimethylsilylation Derivative of Halloysite
Halloysite Kaolinite Synthesis Trimethylsilylation
2011/11/18
Abstract: The trimethylsilyl derivative from halloysite was prepared by the reaction of halloysite powder with a trimethylsilylating reagent. The product was organophilic and the results of its infrar...