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A novel N-succinylchitosan-graft-polyacrylamide/attapulgite composite hydrogel was prepared by using N-succinylchitosan, acrylamide and attapulgite through inverse suspension polymerization. The resul...
Rheology of Na-Rich Montmorillonite Suspension as Affected by Electrolyte Concentration and Shear Rate
Clay-particle Interaction Clay-suspension Viscosity Na-rich Montmorillonite
2011/12/5
Abstract: Rheological measurements were used to evaluate the particle-particle associations of Na-rich montmorillonite in suspensions, under various electrolyte concentrations. A 2% free electrolyte c...
Oxidation of 1,2- and 1,4-Dihydroxybenzene by Birnessite in Acidic Aqueous Suspension
Birnessite Dihydroxybenzene Electron spin resonance Manganese Oxidation Phenol Ultraviolet-visible spectroscopy
2012/1/6
The rate and extent of oxidation of dihydroxybenzenes (DHB) to quinones in acetate-buffered suspensions of synthetic birnessite were studied using Mn dissolution to monitor reaction progress. Concentr...
Visible Spectroscopy of Methylene Blue on Hectorite, Laponite B, and Barasym in Aqueous Suspension
Adsorption Barasym Hectorite Laponite Methylene blue Sepiolite Visible spectroscopy
2012/1/9
The absorption spectra of methylene blue ion exchanged on hectorite, Laponite B, Barasym, or sepiolite in dilute aqueous suspensions show the presence of the monomer, the protonated monomer, the dimer...
Raman Spectroscopic Study of Kaolinite in Aqueous Suspension
Aqueous suspension Infrared spectroscopy Kaolinite pH Raman spectroscopy
2012/2/2
The vibrational modes of clay minerals in aqueous suspension are uniquely accessible to Raman spectroscopy, but this potentially powerful approach has not been applied heretofore to study clays in aqu...
Co, Cu, Ni, and Ca Sorption by a Mixed Suspension of Smectite and Hydrous Manganese Dioxide
Adsorption Analytical transmission electron microscopy Birnessite Cation exchange Manganese oxide Montmorillonite Transition metals
2012/1/13
The sorption properties of Co, Cu, Ni, and Ca were studied in a mixed mineral suspension of synthetic MnO2 and Wyoming montmorillonite. The distribution of the sorbed cations between the two solid pha...
Influence of Exchangeable Cation Composition on the Size and Shape of Montmorillonite Particles in Dilute Suspension
Exchange cations Light transmission Montmorillonite Particle size Tactoid Viscosity
2011/11/23
Abstract: Viscosity and light-transmission measurements of dilute suspensions of montmorillonites having different exchangeable cations were used to calculate relative particle sizes as a function of ...
Determination of Surface Area by Surfactant Adsorption in Aqueous Suspension—I. Dodecylamine Hydrochloride
Determination Surface Area Surfactant Adsorption Dodecylamine Hydrochloride
2012/2/20
Conductometric titrations of clay suspensions with surfactant solutions offer a rapid method of surface area determination of clay particles suspended in aqueous media. A cationic surfactant, dodecyla...
Deposition of Montmorillonite from Suspension During Flow Through Porous Media
Deposition of Montmorillonite Suspension Porous Media
2011/11/16
Sodium-saturated montmorillonite was used to prepare aqueous suspensions of varying concentration between 0.06% and 3.0%. Compacted columns of glass beads and carborundum constituted the porous media....
A Pulsed NMR Study of the Interfacial Water of a Disperse Suspension of Boehmite
NMR Study Interfacial Water Disperse Suspension Boehmite
2011/11/16
A model is presented for interpreting the observed nuclear spin relaxation of the protons in the water molecules of the dispersing phase in terms of the modification of molecular motion in the solid-l...