搜索结果: 1-15 共查到“地质学 Vermiculite”相关记录76条 . 查询时间(0.078 秒)
Synthesis, characterization and swelling behaviors of guar gum-g-poly(sodium acrylate-co-styrene)/vermiculite superabsorbent composites
guar gum vermiculite styrene superabsorbent composite swelling
2011/12/13
A series of novel superabsorbent composites guar gum-g-poly(sodium acrylate-co-styrene)/vermiculite (GG-g-poly(NaAco-St)/VMT) were prepared by the simultaneous graft copolymerization of guar gum (GG),...
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...
Effects of modified vermiculite on the synthesis and swelling behaviors of hydroxyethyl cellulose-g-poly(acrylic acid)/vermiculite superabsorbent nanocomposites
Hydroxyethyl cellulose Vermiculite Superabsorbent nanocomposites Graft copolymerization Swelling
2011/12/13
A series of hydroxyethyl cellulose-g-poly(acrylic acid)/vermiculite (HEC-g-PAA/VMT) superabsorbent nanocomposites were prepared by radical solution polymerization among hydroxyethyl cellulose (HEC), p...
Effects of Modified Vermiculite on Water Absorbency and Swelling Behavior of Chitosan-g-Poly(Acrylic Acid)/Vermiculite Superabsorbent Composite
chitosan modified vermiculite superabsorbent composite swelling
2011/12/14
In this study, a series of chitosan-g-poly(acrylic acid)/vermiculite (CTS-g-PAA/VMT) superabsorbent composites containing VMT, acid-activated,ion-exchanged, and organic modified VMT were synthesized b...
Preparation and swelling properties of superabsorbent nanocomposites based on natural guar gum and organo-vermiculite
Guar gum Organo-vermiculite Superabsorbent Swelling Graft copolymerization Nanocomposites
2011/12/14
Vermiculite (VMT) was modified with cetyl trimethylammonium bromide (CTAB). Superabsorbent nanocomposites were prepared by solution polymerization of natural guar gum (GG), partially neutralized acryl...
Unusual X-Ray Characteristics of Vermiculite from Wiry, Lower Silesia, Poland
Crystal Edge Interstratified Mineral Vermiculite XRD Characteristics
2011/12/5
Abstract: Coarse-grained vermiculite from a serpentinite-pegmatite thermal zone displays a rational series of narrow 14.4 ∈ basal reflections and an unusual broad 28 ∈ peak. X-ray diffraction simulati...
A Nickel Hydroxide-Vermiculite Complex: Preparation and Characterization
Clay-Inorganic Complex One-Dimensional Fourier Electron Density Map Nickel Hydroxide Vermiculite
2011/12/8
Abstract: A nickel hydroxide-vermiculite complex (NHVC) with csinβ = 1.41 nm and particle sizes from 0.075 to 0.15 mm was obtained hydrothermally by adding nickel nitrate solution to vermiculite from ...
The Structure of U6+ Sorption Complexes on Vermiculite and Hydrobiotite
Cation Exchange EXAFS Sorption Surface Complex Uranium Uranyl Vermiculite XANES XRD
2011/12/7
Abstract: The sorption of the uranyl oxo-cation (UO22+)at different types of binding sites on layer silicate mineral surfaces was investigated. Well-characterized samples of vermiculite and hydrobioti...
Structural Study of Tetramethylphosphonium-Exchanged Vermiculite
Organoclay Tetramethylphosphonium Tetramethylphosphonium Vermiculite TMP-Vermiculite Vermiculite
2011/12/7
Abstract: Vermiculite from Santa Olalla, Spain, was intercalated with tetramethylphosphonium [P(CH3)4+ = TMP], using a TMP-bromide solution at 70∑C for three weeks. The resulting TMP-exchanged vermicu...
The Interlayer Structure of La-Vermiculite
8-Coordinated La La-vermiculite Ordered Structure
2011/12/8
Abstract: The structure of the interlayer cation-water system in La-vermiculite with a unit cell of a = 5.33(5), b = 9.18(6), c = 15.13(9) 侌 and 兝 = 96.82(7)亱 has been determined in space group C2/m. ...
Stability of n-Butylammonium Vermiculite in Powder and Flake Forms
Adsorption Degradation Interaction Intercalation Complex Interstratified Phase n-Butylammonium Organo-Vermiculite Particle Size Vermiculite
2011/12/9
Abstract: Interaction between n-butylammonium (BA) chloride and vermiculite from Santa Olalla (Spain) has been studied in large flake (5 × 5 × 0.1 mm) or ground powder (≤80 µm) samples. The diff...
Atomic-resolution transmission electron microscope evidence for the mechanism by which chlorite weathers to 1:1 semi-regular chlorite-vermiculite
Atomic-resolution transmission electron microscope evidence mechanism chlorite weathers semi-regular chlorite-vermiculite
2012/3/31
Atomic-resolution transmission electron microscope (TEM) images reveal that IIbb( b5 978 ) Mg,Al,Fe-chlorite from Koongarra, Australia, transforms to vermiculite via a range of intermediate chemical a...
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...
Crystal Structure of Tetramethylammonium-Exchanged Vermiculite
Tetramethylammonium Vermiculite TMA-Vermiculite Vermiculite
2011/12/23
Abstract: Vermiculite crystals from Santa Olalla, Spain, were intercalated with tetramethylammonium (TMA) after Na saturation. The resulting TMA-vermiculite showed near perfect 3-dimensional stacking ...
The Effect of Added Polymers on n-Butylammonium Vermiculite Swelling
Interlayer Spacings Neutron Diffraction Osmotic Swelling Phase Transitions Polymers Vermiculite Gels
2011/12/22
Abstract: A 4-component clay-polymer-salt-water system was studied by neutron scattering. The clay-salt-water system consisted of n-butylammonium vermiculite, n-butylammonium chloride and heavy water,...