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The clay minerals, generally characterized by their small particle size, affinity for water, and response to chemical changes in their environment, are noted for their gelling and viscoslty-increasing...
Tearing Strength Calculation Model of the Synthetic Leather Base
Synthetic Leather Base Tearing Strength Test Theoretical Calculation Mode
2011/12/14
The synthetic leather base is a composite, with the top and lower layers are nonwovens and the middle is woven fabrics. Firstly, the single rip tearing strength and drawing out resistances of the leat...
The regional stratotype section and point for the base of the Hirnantian Stage(the uppermost Ordovician) at Mirny Creek,Omulev Mountains,Northeast Russia
Hirnantian regional stratotype graptolites brachiopods NE Russia
2009/10/21
A complete Hirnantian sequence comprising the Normalograptus extraordinarius and N. persculptus biozones is well developed at the Mirny Creek section in the Omulev Mountains. The underlying beds are a...
IP measurements on tunnel walls of a sericite deposit—A contact method of nonpolarizable electrodes on a base rock and detection of clay minerals by normalized chargeability
IP (induced polarization) nonpolarizable electrode tunnel wall resistivity
2009/3/5
The development of the IP (induced polarization) measurement technique used inside a tunnel is required in order to estimate the subsurface resistivity and chargeability structures with high precision...
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...
Hydrophobic Nature of Organo-Clays as a Lewis Acid/Base Phenomenon
Organo-clay Surface tension Lewis acid/base
2011/12/31
The surface thermodynamic properties of a series of n-alkylammonium and quaternary ammonium treated clay films were determined by contact angle measurement of drops of test liquids using the Young equ...
Study of Some Physicochemical Properties of Pillared Montmorillonites: Acid-Base Potentiometric Titrations and Electrophoretic Measurements
Electrophoretic mobility Montmorillonite Pillared clays Potentiometric titration Surface charge
2012/1/4
The surface charges and the zeta potential of a Na-montmorillonite (Na-mont) and two pillared montmorillonite (MP1 and MP2) samples with different aluminum contents were determined by potentiometric t...
Natural Ammonium Illites from Black Shales Hosting a Stratiform Base Metal Deposit, DeLong Mountains, Northern Alaska
Ammonium Black shale Illite Infrared spectroscopy Nitrogen X-ray powder diffraction
2012/2/7
Naturally occurring ammonium illites have been discovered in black shales surrounding a stratiform base metal deposit in the DeLong Mountains, northern Alaska. Infrared spectra of the samples exhibit ...
The Release of Aluminum from Aluminosilicate Minerals. II. Acid-Base Potentiometric Titrations
Aluminum Biotite Buffer Illite Kaolinite Mica Montmorillonite
2012/2/9
Acidified suspensions of Al-saturated kaolinite, montmorillonite, mica, illite, and biotite in 10−3 M NaNO3 were potentiometrically titrated with 0.1 N NaOH and 0.1 N HNO3 in succession in a CO2...
Reactions of Zinc with Acid and Base Saturated Dickites
Adsorption Dickite Exchange Sodium Zinc
2012/2/10
The effect of pH, time and temperature on the interaction of zinc with acid and base saturated dickites has been investigated. Increase in pH resulted in an increase in adsorption of zinc in the highe...
Acid-Base Interactions and the Properties of Kaolinite in Non-Aqueous Media
Acid-Base Interactions Kaolinite Non-Aqueous Media
2012/2/17
In non-aqueous systems, kaolinite can show, in addition to the physical interactions, considerable chemical activity. This study considers the chemical reactions that can occur at the kaolinite surfac...