搜索结果: 16-30 共查到“凹凸棒石 bentonite”相关记录41条 . 查询时间(0.016 秒)
Fe3+-Rich Montmorillonite-Beidellite Series in Ayvacik Bentonite Deposit, Biga Peninsula, Northwest Turkey
Biga Peninsula Fe-rich Beidellite Montmorillonite Turkey
2011/12/6
Abstract: The Ayvac齥 bentonites, products of Miocene calc-alkaline volcanic rocks, are composed of smectite of the montmorillonite-beidellite series. Fault-related hydrothermal solutions have altered ...
Pharmaceutical applications of some spanish clays (sepiolite, palygorskite, bentonite): some preformulation studies
palygorskite sepiolite bentonite pharmaceutical uses excipients
2011/11/4
In this work, a pharmaceutical preformulation study of four Spanish clays two sepiolites, one palygorskite and one bentonite. is presented, comparing the results obtained with those of three mineral ...
Comparative Study of the Mobility of Major and Trace Elements During Alteration of an Andesite and a Rhyolite to Bentonite, in the Islands of Milos and Kimolos, Aegean, Greece
Alteration Andesite Bentonite Element Mobilization Mordenite Phosphates REE Fractionation Residual Enrichment Rhyolite Smectite Water:Rock Ratio
2011/12/8
Abstract: Progressive alteration by seawater of an andesite in the Aegean Island of Milos and an ignimbrite in the Aegean Island of Kimolos, Greece, formed bentonites with or without zeolites. Both pr...
Dehydration, Diffusion and Entrapment of Zinc in Bentonite
Bentonite Entrapment Interaction Micropore Diffusion Speciation Zinc
2011/12/8
Abstract: Interactions with bentonite are important in the chemical speciation and fate of heavy metals in soils and other ecosystems. The interactions of Zn with bentonite were studied using X-ray di...
Transformation of Smectite to Illite in Bentonite and Associated Sediments from Kaka Point, New Zealand: Contrast in Rate and Mechanism
Analcimized Tuff Bentonite Berthierine Illite Kaka Point Mixed-layer I/S New Zealand Siltstone Smectite Zeolite Facies
2011/12/1
Abstract: Smectite and mixed-layer illite/smectite (I/S) in Triassic heulandite-rich bentonite from Kaka Point, New Zealand, have been investigated by scanning electron microscopy (SEM), transmission ...
Origin of the Bentonite Deposits of Eastern Milos, Aegean, Greece: Geological, Mineralogical and Geochemical Evidence
Authigenic K-feldspar Bentonite Electron microscopy Hydrothermal alteration Infrared spectroscopy Low temperature alteration Smectite X-ray diffraction X-ray fluorescence Zeolites
2011/12/1
Abstract: The Lower Pleistocene bentonite deposits of Eastern Milos, Greece have been formed at the expense of volcaniclastic rocks under submarine conditions. Systematic variation of the major chemic...
The Rheological and Colloidal Properties of Bentonite Dispersions in the Presence of Organic Compounds V. Bentonite and Sodium Montmorillonite and Surfactants
Bentonite Cetylpyridinium chloride Coagulation Flow behavior Montmorillonite Sodium dodecylsulfate (SDS) Surfactants
2011/12/27
The influence of surfactants on the flow behavior of sodium montmorillonite dispersions (2% w/w) was studied for a cationic (cetylpyridinium chloride, CPCl) and an anionic surfactant (sodium dodecylsu...
Layer Charge of the Expandable Component of Illite/Smectite in K-Bentonite as Determined by Alkylammonium Ion Exchange
Alkylammonium Bentonite Clays Diagenesis Illite Illite/smectite Layer charge Smectite
2011/12/27
The charge of the expandable interlayers in a series of fourteen diagenetic illite/smectites (I/S) from lower Paleozoic K-bentonites was determined by the alkylammonium ion exchange method. The magnit...
Sorption parameters are important components of models used to predict mass transport through dense or compacted earthen materials. These parameters are, however, generally determined in batch tests w...
Influence of Calcium and Sodium Concentration on the Microstructure of Bentonite and Kaolin
Aggregation Bentonite Electrolyte Flocculation Kaolin Scanning electron microscopy
2012/1/5
The influence of added sodium and calcium nitrate electrolyte on the particle aggregates in the colloid fraction of natural bentonite and kaolin was studied. Clays were flocculated in distilled water ...
Direct High-Resolution Transmission Electron Microscopic Measurement of Expandability of Mixed-Layer Illite/Smectite in Bentonite Rock
Expandability Fundamental particle High-resolution transmission electron microscopy Illite/smectite Interstratification
2012/1/4
Samples of mixed-layer illite/smectite were investigated from a single bentonite bed zoned with respect to expandability from 90 to 30%. Chips of natural rocks were embedded in a resin, using procedur...
Characterization of Illitization of Smectite in Bentonite Beds at Kinnekulle, Sweden
Bentonite Diagenesis Illite/smectite Illitization Transmission electron microscopy X-ray powder diffraction
2012/1/4
Structure, morphology, and chemical composition of illite/smectite (I/S) containing 30–50% smectite layers (% S) from Kinnekulle bentonites, Sweden, of diagenetic origin were examined using X-ray powd...
Pyrogallol Transformations as Catalyzed by Nontronite, Bentonite, and Kaolinite
Bentonite Catalysis Humic polymers Infrared spectroscopy Kaolinite Nontronite Nuclear magnetic resonance Pyrogallol
2012/1/9
The catalytic power of Ca-nontronite, Ca-bentonite, and Ca-kaolinite in promoting the abiotic ring cleavage of pyrogallol (1,2,3-trihydroxybenzene) and the associated formation of humic polymers was s...
Investigation of a K-Bentonite by X-ray Powder Diffraction and Analytical Transmission Electron Microscopy
Analytical transmission electron microscopy Bentonite Illite Interstratification Potassium Selected area diffraction Smectite X-ray powder diffraction
2011/11/30
Abstract: The < 0.1-µm size fraction of an Ordovician K-bentonite from northern Kentucky was characterized by X-ray powder diffraction (XRD). Using A.I.P.E.A. criteria for interstratification no...
Asymmetric Zonation of a Thick Ordovician K-Bentonite Bed at Kinnekulle, Sweden
Bentonite Diagenesis Illite/smectite Potassium Shale X-ray powder diffraction
2012/1/9
The clay fraction of a …2-m-thick K-bentonite at Kinnekulle in southwestern Sweden has been studied by X-ray powder diffraction, chemical analyses, and cation-exchange capacity determinations. Previou...