搜索结果: 1-15 共查到“矿床学与矿相学 Structural”相关记录100条 . 查询时间(0.218 秒)
Processing and characterization of halloysite nanotubes filled polypropylene nanocomposites based on a masterbatch route: effect of halloysites treatment on structural and mechanical properties
nanocomposites polypropylene halloysite nanotubes masterbatch
2011/12/14
Halloysites/polypropylene nanocomposites with different nanotubes contents were prepared by diluting a masterbatch containing 30 wt.% halloysites with polypropylene (PP). Unmodified (HNTs) and quatern...
The Silistar Intrusive, Eastern Srednogorie Zone, Bulgaria: Structural Data and Potential for Porphyry Copper and Epithermal Systems
Eastern Srednogorie Bulgaria Silistar intrusion porphyry copper epithermal
2009/7/8
The Late Cretaceous Silistar intrusion comprises of gabbros, gabbro-diorites to quartz-diorites and aplites, that were emplaced into a volcano-sedimentary succession of similar age. Structural data su...
Structural Model of Al13-Pillared Montmorillonite
Alumina Pillaring Computer Simulation Keggin Pillaring Montmorillonite Structural Model Transmission Electron Microscopy
2011/12/2
Abstract: Alumina-pillared montmorillonite is prepared by intercalation of polyoxyhydroxy aluminum cations (Al137+) of a natural montmorillonite from Dimitrovgrad, Bulgaria. Transmission electron micr...
Structural Transformation of 2:1 Dioctahedral Layer Silicates during Dehydroxylation-Rehydroxylation Reactions
Cation Migration Celadonite Cis-Vacant Octahedra Dehydroxylation Glauconite Illite Rehydroxylation Smectites Structure Trans-Vacant Octahedra
2011/12/6
Abstract: The structural transformation of dioctahedral 2:1 layer silicates (illite, montmorillonite, glauconite, and celadonite) during a dehydoxylation-rehydroxylation process has been studied by X-...
Structural Chemistry of Fe, Mn, and Ni in Synthetic Hematites as Determined by Extended X-Ray Absorption Fine Structure Spectroscopy
EXAFS Fe Oxides Hematite Metal Substitution Trace Elements XAS XRD
2011/12/6
Abstract: The incorporation of transition metals into hematite may limit the aqueous concentration and bioavailabity of several important nutrients and toxic heavy metals. Before predicting how hemati...
Structural adjustments induced by heat treatment in ilvaite
Structural adjustments induced heat treatment ilvaite
2012/4/1
To verify the oxidation-dehydrogenation reaction induced by heat treatment of ilvaite in air, acrystal from Elba Island, Italy, was selected for annealing experiments and crystal chemical study. X-ray...
Structural investigation of platinum solubility in silicate glasses
Structural investigation platinum solubility silicate glasses
2012/4/1
The coordination environment of 20-200 ppm Pt in yellowish glasses from the CaO-Al O -SiO
2 3 2(CAS) ternary was studied using X-ray absorption fine structure spectroscopy at the Pt-L edge.
IIIedge...
Structural Fe3+ in Natural Kaolinites: New Insights from Electron Paramagnetic Resonance Spectra Fitting at X and Q-Band Frequencies
Dickite Disorder EPR Fe3+ Kaolinite
2011/12/7
Abstract: Structural Fe3+ in kaolinites and dickites covering a broad range of disorder was investigated using electron paramagnetic resonance (EPR) spectroscopy at both the X and Q-band frequencies. ...
Structural environment of krypton dissolved in vitreous silica
Structural environment krypton dissolved vitreous silica X-ray
2012/4/1
X-ray absorption measurements on Kr dissolved homogeneously in vitreous silica (1.97 wt% Kr)
have been carried out at the Kr K-edge at 4.5 K, representing the first direct determination of the sites
...
Aliphatic hydrocarbons in structural channels of cordierite: A first evidence from polarized single-crystal IR-absorption spectroscopy
Aliphatic hydrocarbons channels of cordierite single-crystal IR-absorption spectroscopy
2012/3/31
Polarized IR-absorption spectra were measured on inclusion-free spots, 50 ?m in diameter of
(100)-, (010)-, and (001)-oriented single-crystal plates of orthorhombic cordierites extracted from
anatec...
Preparation and Properties of Hematite with Structural Phosphorus
α-Fe2O3 Hematite Color Crystal Chemistry Dissolution IR Spectra Structural P Structure
2011/12/7
Abstract: Synthetic hematites prepared in the presence of phosphate can incorporate phosphorus (P) in forms other than phosphate adsorbed by ligand-exchange on the crystal surface. To investigate the ...
Structural Study of Monomethylammonium and Dimethylammonium-Exchanged Vermiculites
Dimethylammonium-Exchanged Vermiculite Monomethylammonium-Exchanged Vermiculite Organoclay Tetramethylammonium-Exchanged Vermiculite Tetramethylphosphonium-Exchanged Vermiculite
2011/12/7
Abstract: Vermiculite crystals from Santa Olalla, Spain, were first Na exchanged and then intercalated with monomethylammonium (= NH3(CH3)+, MMA) and dimethylammonium (= NH2(CH3)2+, DMA) molecules, re...
Structural Study of Tetramethylphosphonium-Exchanged Vermiculite
Organoclay Tetramethylphosphonium Tetramethylphosphonium Vermiculite TMP-Vermiculite Vermiculite
2011/12/7
Abstract: Vermiculite from Santa Olalla, Spain, was intercalated with tetramethylphosphonium [P(CH3)4+ = TMP], using a TMP-bromide solution at 70∑C for three weeks. The resulting TMP-exchanged vermicu...
High temperature in situ structural investigation on lead feldspar
High-temperature increase
2012/3/30
Single-crystalX-raydiffractionwasperformedinsituat T 20,230,465,and700C
Si O , I2/c,a 8.402, b 13.043, c 14.308
onapartiallyorderedleadfeldspar(PbAl2 2 8351??
A, 115.30, V 1417.6A ; Q 0.71).Theunit...
Unusual M3+ cations in synthetic amphiboles with nominal fluro-eckermannite composition: Deviations from stoichiometry and structural effects of the cummingtonite component
composition stoichiometry Unusual M3+
2012/3/30
Single-crystalstructure-re?nementandelectron-microprobeanalysisofsyntheticam-
phiboleswithnominal?uoro-eckermannitecompositionanddifferenttrivalentcations(Al,3 3 3
Sc,Ti,V ,Cr ,Ga,)showsigni?cantdev...