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Correlation between Cation Exchange Capacity and Geotechnical Properties of Lateritic Soils
Correlation Cation Exchange Capacity Geotechnical Properties Lateritic Soils
2012/3/14
Correlation between Cation Exchange Capacity and Geotechnical Properties of Lateritic Soils.
Cation exchange as influenced by the type of cations in different clay minerals
Cation exchange influenced type cations different clay minerals
2012/3/30
Physical and chemical properties of most soils are influenced by their ion-exchange characteristics, including the amount and balance of individual ions present (Rayment and Lyons, 2011). Cation Excha...
The nature of clay-cation association dictates clay behaviour in aqueous suspensions
nature clay-cation association dictates clay behaviour aqueous suspensions
2012/3/30
Dispersive behaviour of soil clays has been explained by soil scientists using hypotheses involving various electrical diffuse double layer forces generated between colloidal clay particles suspended ...
A METHOD FOR THE DETERMINATION OF THE CATION EXCHANGE CAPACITY OF CLAY MINERALS AND SOILS
CLAY MINERALS SOILS METHOD
2011/11/15
For many purposes it is desirable to have a method for the determination of the cation exchange capacity of clay minerals based on principles as free from ambiguity as possible. Most of the many metho...
Preparation and Swelling Characteristics of a Superabsorbent Nanocomposite Based on Natural Guar Gum and Cation-Modified Vermiculite
guar gum vermiculite superabsorbent nanocomposite pH-sensitive swelling
2011/12/13
A series of novel superabsorbent nanocomposites were prepared by the solution radical polymerization of natural guar gum (GG), partially neutralized
acrylic acid [sodium acrylate (NaA)], and cationex...
Octahedral cation distribution in palygorskite
Palygorskite Fe-rich Mg-rich structure near infrared spectroscopy trioctahedral
2011/11/14
The OH speciation of 18 palygorskite samples from various localities were evaluated by near infrared spectroscopy (NIR) and compared to the corresponding octahedral composition derived from independen...
Cation-Exchange Capacity (CEC) of Zeolitic Volcaniclastic Materials: Applicability of the Ammonium Acetate Saturation (AMAS) Method
Ammonium Acetate Saturation (AMAS) Method Ammonia Electrode Cation-Exchange Capacity (CEC) Clinoptilolite Greece Kjeldahl Ammonia Distillation
2011/12/7
Abstract: The ammonium acetate saturation (AMAS) method was used to study the cation-exchange capacity (CEC) of zeolitic volcaniclastic materials from Santorini and Polyegos Islands, Greece. The AMAS ...
Complex Formation of Cation-Exchanged Montmorillonites with Propylene Carbonate: Osmotic Swelling in Aqueous Electrolyte Solutions
Infra-Red Spectroscopy Intercalation Complex Montmorillonite Osmotic Swelling Propylene Carbonate
2011/12/7
Abstract: Montmorillonites saturated with Li+, Na+, K+, NH4+, Mg2+, Ca2+, Ba2+, or Ni2+ ions can form complexes with propylene carbonate (PC) by intercalation; the d(001) of montmorillonite expands to...
Thermodynamics of cation ordering in karrooite (MgTi2O5)
MgTi2O5 Thermodynamics cation ordering karrooite
2012/4/1
A thermodynamic model of non-convergent cation-ordering in karrooite (MgTi O ) has been cali-2 5
brated from the single-crystal X-ray structure refinements of Yang and Hazen (1998) and from esti-
ma...
Modeling of Organic and Inorganic Cation Sorption by Illite
Benzylalkylammoium Cation Adsorption Model Crystal Violet Illite Ionic Strength Source Clay Imt-2 Montmorillonite
2011/12/7
Abstract: Sorption of several organic and inorganic cations on illite (Clay Minerals Society Source Clay Imt-2) was determined experimentally and results compared to model calculations. The cations st...
In situ neutron diffraction study of non-convergent cation ordering in the (Fe3O4)1-x(MgAl2O4)x spinel solid solution
non-convergent cation ordering (Fe3O4)1-x(MgAl2O4)x spinel solid solution
2012/3/31
Non-convergent cation ordering in the (Fe O ) (MgAl O ) solid solution was investigated us-
ing in-situ time-of-flight neutron powder diffraction. The approach to equilibrium in a sample with
x = 0...
Cation Exchange Capacity of Kaolinite
Cation Exchange Capacity Edges Exposed (OH) Planes Kaolinite Substitution Surface Charge
2011/12/6
Abstract: Experimental cation exchange capacities (CEC) of kaolinites were determined and compared to theoretical calculations of CEC. The comparison reveals that the exchangeable cations occur mostly...
Thermodynamics and kinetics of cation ordering in MgAl2O4 spinel up to 1600 °C from in situ neutron diffraction
MgAl2O4 temperature to 1600C situ neutron diffraction
2012/3/30
Thetemperaturedependenceofthecationdistributioninsyntheticspinel(MgAl O )was2 4
determinedusingin-situtime-of-?ightneutronpowderdiffraction.Neutrondiffractionpat-
ternsofstoichiometricMgAl
O andsli...
Hard and Soft Acid-Base Model Applied to Bivalent Cation Selectivity on a 2:1 Clay Mineral
Bivalent Cations Covalent Bonding Electronegativity HSAB Montmorillonite Selectivity Coefficient Softness
2011/12/8
Abstract: We applied the hard and soft acid-base (HSAB) model (Xu and Harsh 1990a, 1990b) to bivalent cation exchange on a purified Ca-montmorillonite. As a result, a satisfactory model is proposed to...
The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) from the in-situ neutron structure refinements
temperature dependence cation distribution synthetic hercynite (FeAl2O4) in-situ neutron structure refinements
2012/4/1
The temperature dependence of the cation distribution in synthetic hercynite (FeAl2O4) has been determined using in-situ time-of-flight neutron powder diffraction. The sample was synthesized from the ...
