搜索结果: 16-30 共查到“矿床学与矿相学 Montmorillonite”相关记录229条 . 查询时间(0.057 秒)
Nuclear Magnetic Resonance (NMR) Study of Cd2+ Sorption on Montmorillonite
Adsorption Cadmium Montmorillonite Nuclear Magnetic Resonance
2011/12/8
Abstract: 113Cd solid-state nuclear magnetic resonance (NMR) was used to identify possible Cd2+ adsorption sites in montmorillonite. The montmorillonite was treated with 0.1 and 1 M CdCl2 aqueous solu...
Swelling of Formamide-Montmorillonite Complexes in Polar Liquids
Donor Number Formamide Montmorillonite Osmotic Swelling Polar Liquids Swelling
2011/12/7
Abstract: A new osmotic-swelling system for montmorillonite with formamide (FA) is described. Water and a variety of polar organic liquids were used to swell FA-montmorillonite complexes. The post-swe...
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 ...
Application of an Internal Standard Technique by Transmission X-ray Diffraction to Assess Layer Charge of a Montmorillonite by Using the Alkylammonium Method
Alkylammonium Method Interlayer Cation Exchange Capacity Layer-Charge Determination Montmorillonite Silver Behenate XRD
2011/12/6
Abstract: Transmission X-ray diffraction (XRD) of C6–16 alkylammonium ion-exchanged montmorillonite SAz-1 with Ag-behenate as an internal standard provided accurate estimates of d(001) values of the a...
Structural Organization of Na- and K-Montmorillonite Suspensions in Response to Osmotic and Thermal Stresses
Montmorillonite SAXS Structure Suspensions Texture
2011/12/8
Abstract: In order to understand the influence of salt concentration and temperature on the behavior and properties of clays used in drilling muds, we studied montmorillonite supensions (4 g clay/100 ...
Modeling Adsorption-Desorption Processes of Cd on Montmorillonite
Cadmium Cation Adsorption Model Hysteresis Montmorillonite
2011/12/8
Abstract: Adsorption-desorption of Cd to Ca montmorillonite (SAz-1) was studied at concentrations ranging from 44.5 to 266.8 礛. An adsorption model was employed in the analysis of the data. The proced...
Neptunium(V) Sorption on Montmorillonite: An Experimental and Surface Complexation Modeling Study
Diffuse-Layer Model Montmorillonite Neptunium Sorption Surface Complexation
2011/12/8
Abstract: Batch sorption experiments at fixed initial Np(V) concentration (…1 】 10−6 M 237Np), M/V ratio (4 g L−1), and ionic strength (0.1 molal NaNO3) were conducted to determine the eff...
Molecular Simulations of Montmorillonite Intercalated with Aluminum Complex Cations. Part II: Intercalation with Al(OH)3-Fragment Polymers
Al-Cation Gibbsite-like Polymers Intercalation Molecular Simulations Montmorillonite
2011/12/8
Abstract: The Crystal Packer module in the Cerius2 modeling environment has been used to study the structure of montmorillonite intercalated with Al(OH)3-fragment (gibbsite-like) polymers. Basal spaci...
Molecular Simulations of Montmorillonite Intercalated with Aluminum Complex Cations. Part I: Intercalation with [Al13O4(OH)24+x(H2O)12−x](7−x)+
Al-Cations Intercalation Molecular Simulation Montmorillonite Structure
2011/12/8
Abstract: The structure of montmorillonite intercalated with [Al13O4(OH)24+x(H2O)12−x](7−x)+ cations ( A l 13 (7−x)+ for short), where x = 0, 2 and 4, has been studied using the Ceri...
Mechanism of Adsorption and Desorption of Water Vapor by Homoionic Montmorillonite: 3. the Mg2+, Ca2+, Sr2+ and Ba2+ Exchanged Forms
Adsorption Desorption Earth-Alkaline Cations Immersion Microcalorimetry Montmorillonite Relative Humidity Surface Area X-ray Diffraction
2011/12/1
Abstract: The swelling of some well-defined Mg-, Ca-, Sr- and Ba- homoionic montmorillonites was studied in the domain of water relative pressures lower than 0.95. This involves the expansion of the c...
Properties and Catalytic Activity of Acid-Modified Montmorillonite and Vermiculite
Acidity Benzene Catalyst Characterization Hydrocarbons Isopropylation Methanol Dehydration Montmorillonite Vermiculite
2011/12/23
Abstract: The acidic properties of acid-modified montmorillonite and vermiculite were determined by pyridine and ammonia adsorption to correlate with the alkylating and dehydrating activity of the act...
Adsorption of Benzyltrimethylammonium and Benzyltriethylammonium on Montmorillonite: Experimental Studies and Model Calculations
Basal Spacing Benzylalkylammonium Adsorption Cation Adsorption Model Ionic Strength Montmorillonite
2011/12/22
Abstract: The adsorption of the monovalent organic cations benzyltrimethylammonium (BTMA) and benzyltriethylammonium (BTEA) to montmorillonite was studied as a function of their concentrations and ion...
Effects of Exchanged Cation and Layer Charge on the Sorption of Water and EGME Vapors on Montmorillonite Clays
Cation Solvation EGME Isotherms Excess Interlayer Uptake Exchanged Cation Interlayer Spacings Layer Charge Layer Separation Microporosity Montmorillonite
2011/12/23
Abstract: The effects of exchanged cation and layer charge on the sorption of water and ethylene glycol monoethyl ether (EGME) vapors on montmorillonite have been studied on SAz-1 and SWy-1 source cla...
Migration of Cations in Copper(II)-Exchanged Montmorillonite and Laponite upon Heating
CEC Measurements Cu-Laponite Cu-Montmorillonite EPR Hofmann-Klemen Effect IR XPS
2011/12/22
Abstract: Two clay minerals, a dioctahedral, Na-montmorillonite from Wyoming and a trioctahedral, synthetic Na-laponite, were exchanged by cupric (Cu(II)) ions and subsequently heated at 100 °C interv...
Nuclear Magnetic Resonance and X-ray Photoelectron Spectroscopic Investigation of Lithium Migration in Montmorillonite
Lithium Migration Montmorillonite NMR Spectroscopy X-ray Photoelectron Spectroscopy
2011/12/22
Abstract: When Li-saturated montmorillonite is heated to 200?00 癈, the Li ions migrate from interlayer positions to sites in the layer structure. However, the identity of these sites has not been clea...