搜索结果: 166-180 共查到“凹凸棒石 Properties”相关记录204条 . 查询时间(0.234 秒)
Formation, Compositions, and Properties of Hydroxy-Al- and Hydroxy-Mg-Montmorillonite
Hydrolysis Hydroxy interlayer Montmorillonite Swelling Thermal stability
2012/2/9
Hydroxy-Al- and hydroxy-Mg-montmorillonite were prepared by treating dispersed Na-montmorillonite with aluminum and magnesium nitrate solutions and titrating with NaOH solutions so that the OH/Al rati...
Physico-Chemical Properties of Synthetic Hydrotalcites in Relation to Composition
Crystal strain Hydrotalcite Solid solution Synthesis Thermal stability
2011/11/22
Abstract: Hydrotalcite solid solutions were prepared by coprecipitation followed by hydrothermal treatment between 150° and 250°C. Based on the structural formula [Mg1−xAlx(OH)2]X+[(CO3)x/2ͺ...
Biotite Alteration in Deeply Weathered Granite. I. Morphological, Mineralogical, and Chemical Properties
Biotite Goethite Mixed-layer mineral SEM morphology Vermiculite Weathering
2012/2/10
Biotite in deeply weathered granitic rocks in southwestern Australia has altered to exfoliated grains composed of biotite, mixed-layer clay minerals, kaolinite, vermiculite, gibbsite, goethite, and he...
Synthesis and Properties of Heat-Stable Expanded Smectite and Vermiculite
Expanded Clays Heat-Stable Clays Hectorite Intercalation Intersalation Phenanthroline Smectite Vermiculite
2012/2/9
When aqueous dispersions of Na+-smectite or n-butylammonium-vermiculite react with sulfate salts of Fe(II), Co(II), or Ni(II) bipyridyl or 1, 10-phenanthroline complexes in excess of the cation-exchan...
Ion-Exchange Properties of the Natural Zeolite Erionite
Erionite Ion exchange Offretite Selectivity Zeolite Zeolite T
2012/2/10
Natural erionite was exhaustively ion exchanged with Na+ to give the anhydrous unit-cell composition (K1.9Na5.4Ca0.1Mg0.1)[(AlO2)7.4(SiO2)28.6]. A thermodynamic study of alkali and alkaline earth meta...
Preparation of Montmorillonite-Nylon Complexes and Their Thermal Properties
Aminocaproic Acid Intercalation Montmorillonite Nylon Polymer
2012/2/9
Montmorillonite-aminocaproic acid complexes (monomer complexes) were prepared by the intercalation of 6-aminocaproic acid to various homoionic (Na+, Ca2+, Mg2+, Co2+, and Cu2+) montmorillonites. Infra...
The Influence of Aluminum on Iron Oxides. Part II. Preparation and Properties of Al-Substituted Hematites
Aluminum Ferrihydrite Goethite Hematite Iron
2012/2/9
Aluminum-substituted hematites (Fe2−xAlxO3) were synthesized from Fe-Al coprecipitates at pH 5.5, 7.0, and in 10−1, 10−2, and 10−2 M KOH at 70°C. As little as 1 mole % Al suppr...
Effects of Micro-Sized Mixtures of Kaolin Minerals on Properties of Kaolinites
Crystallinity Halloysite Kaolin Kaolinite
2012/2/10
“Kaolinites” from classic, large deposits of kaolin are shown commonly in scanning electron micrographs to be mixtures, at least in part, in microdimensions, of kaolin-mineral polymorphs.Artificial mi...
Cross-Linked Smectites. I. Synthesis and Properties of Hydroxy-Aluminum-Montmorillonite
Aluminum Electrostatic Hydroxide Oligomer Montmorillonite
2012/2/10
A stable porous system consisting of montmorillonite cross-linked by Al-hydroxide oligomers was synthesized by reacting at room temperature an aqueous solution of such oligomers with a unit-layer disp...
Synthesis of Hydrotalcite-Like Compounds and their Physico-Chemical Properties—The Systems Mg2+-Al3+-SO42− and Mg2+-Al3+-CrO42−
Synthesis Hydrotalcite-Like Compounds Physico-Chemical Properties
2011/11/18
Abstract: Hydrotalcite-like compounds [MgI − xAlx(OH)2]x+ [Ax/22−, mH2O]x−, where A2− is SO42− or CrO42− and x ≇ 0.25, were prepared by a coprecipitation meth...
Properties and Quantitative Estimation of Poorly Crystalline Components in Sesquioxidic Soil Clays
Quantitative Estimation Poorly Crystalline Components Sesquioxidic soil clays
2012/2/13
Sesquioxidic soil clays from Oxisols in South Africa, Australia and Brazil, and two clays from Andosols in Japan and New Zealand, were investigated by selective dissolution techniques. Acid ammonium o...
Synthesis and Swelling Properties of Saponites with Increasing Layer Charge
Synthesis Swelling Increasing Layer Charge Saponites
2012/2/13
Nine synthetic Na-saponites with charge densities varying between 0.33 and 1.0 have been prepared. Their swelling properties and structural organization in water, ethylene glycol and glycerol show dis...
A Relationship between Crystallographic Properties of Illite and Chemical Properties of Extractable Organic Matter in Pre-Phanerozoic and Phanerozoic Sediments
Crystallographic Properties Illite Chemical Properties Extractable Organic Matter Pre-Phanerozoic Phanerozoic Sediments
2012/2/13
Crystallographic properties of illite and chemical properties of organic matter in various mudstones ranging in age from Archean to Miocene were investigated. The breadth of the (001) X-ray powder dif...
Structural Analysis of Sepiolite by Selected Area Electron Diffraction—Relations with Physico-Chemical Properties
Structural Analysis of Sepiolite Area Electron Diffraction Physico-Chemical Properties
2011/11/18
Abstract: The electron structural analysis of a Madagascar sepiolite (Ampandrandava) was carried out by selected area electron diffraction obtained from monocristals. Fourier projections, derived from...
The Syntheses of Hydrotalcite-Like Compounds and Their Structures and Physico-Chemical Properties I: The Systems Mg2+-Al3+-NO3−, Mg2+-Al3+-Cl−, Mg2+-Al3+-ClO4−, Ni2+-Al3+-Cl− and Zn2+-Al3+-Cl−
Syntheses Hydrotalcite-Like Compounds Physico-Chemical Properties
2012/2/15
The basic salts of this system were prepared and their structures and physico-chemical properties were studies by electron microscopy, chemical analysis, X-ray powder diffraction, thermal analysis, i....