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Double dating detrital zircons in till from the Ross Embayment, Antarctica
geochronology thermochronology Ross Embayment, Antarctica Antarctica
2015/1/16
U/Pb and (U-Th)/He (ZHe) dating of detrital zircons from glacial till samples in the Ross Embayment, Antarctica records cooling after the Ross/Pan-African orogeny (450-625 Ma) followed by a mid-Jurass...
Nomenclature of the hydrotalcite supergroup;natural layered double hydroxides
LDH layered double hydroxide hydrotalcite hydrotalcite supergroup brucite nomenclature manasseite sjo¨grenite barbertonite cyanophyllite fouge`rite treⅴbeurdenite.
2013/12/6
Layered double hydroxide (LDH) compounds are characterized by structures in which layers with a brucite-like structure carry a net positive charge, usually due to the partial substitution of trivalent...
This study investigates the potential of a Zn/Al layered double hydroxides (LHDs) as an adsorbent for the removal of iodine species from potable water (Theiss et al., 2011b). In this paper the resulta...
Si,Al ordering in the double-ring silicate armenite, BaCa2Al6Si9O30?H2O: A single-crystal X-ray and 29Si MAS NMR study
BaCa2Al6Si9O30?H2O single-crystal
2012/3/30
29The SiMASNMRspectrumofarmenitefromWasenalp(Valais,Switzerland)indicates
completeSi,Alordering.Thesamechemicalshifts(82.3,95.0,and101.8ppm)were
alsomeasuredforarmenitefromRe!migny(Quebec,Canada),ho...
The double helix meets the crystal lattice: The power and pitfalls of nucleic acid approaches for biomineralogical investigations
helix meets crystal lattice nucleic acid approaches biomineralogical investigations
2012/4/1
The inability to culture the majority of microorganisms from natural habitats has been well documented. In response to this constraint, the development and application of cul-ture-independent methods ...
Off-center hot spots: Double thermocouple determination of the thermal gradient in a 1.27 cm (1/2 in.) CaF2 piston-cylinder furnace assembly
Off-center hot spots Double thermocouple determination thermal gradient CaF2 cylinder furnace assemblypiston-
2012/3/31
Double-thermocouple experiments were carried out at 10 kbar in a 1.27 cm (1/2 in.)piston-cylinder apparatus to map the thermal gradient and locate the peak temperature of a CaF2-graphite furnace assem...
Rehydration of Zn-Al Layered Double Hydroxides
Hydrotalcite Hydrothermal Treatment Layered Double Hydroxide Reconstruction
2011/12/1
Abstract: Rehydration is shown to be straightforward for the reconstruction of polyoxometallate-pillared layered double hydroxides. Zn-Al hydrotalcite-like minerals were prepared with Zn/Al ratios of ...
Cation Ordering in Synthetic Layered Double Hydroxides
Cation Ordering LDH Pyroaurite XAS XRD
2011/12/22
Abstract: A combined powder X-ray diffraction (XRD) and X-ray absorption (XAS) study of Fe(III) cation ordering within pyroaurite is described. It is concluded that there is no correlation between Fe(...
A Critique of Diffuse Double Layer Models Applied to Colloid and Surface Chemistry
Clay Dispersion Clay Swelling Diffuse Double Layer DLVO Electrostatic Attraction Theory Interparticle Forces Ockham's Razor Schiller Layers Smectites
2011/12/22
Abstract: The use of Derjaguin-Landau-Verwey-Overbeek (DLVO) theory in colloid science has continued to the present day in spite of the inability of this theory to explain, even qualitatively, numerou...
Thermochemistry of double carbonates in the K2CO3-CaCO3 system
Thermochemistry double carbonates K2CO3-CaCO3 system
2012/4/5
Enthalpiesofformation,H,ofthedoublecarbonatesK Ca(CO ) (withtwopoly-morphs,bu!§tschliiteandfairchildite)andCa (CO ) fromthecomponentsK CO andCaCO
weredeterminedat298Kbydropsolutioncalorimetryinmolten...
Thermal Characterization of Poly(styrene sulfonate)/Layered Double Hydroxide Nanocomposites
Layered Double Hydroxides Nanocomposites Poly(styrene sulfonate)
2011/12/9
Abstract: Phase and morphological changes during thermolysis of Mg4Al2(OH)12CO3·nH2O and Zn6Al2(OH)16CO3·nH2O layered double hydroxides (LDH) and their nanocomposites with poly(styrene sulfonate) (PSS...
Short-range disorder of Si and Ti in the tetrahedral double-chain unit of synthetic Ti-bearing potassium-richterite
Short-range disorder Si Ti double-chain unit of synthetic Ti-bearing potassium-richterite
2012/4/5
Ti-rich potassium-richterite samples weresynthesized at 900°C and 1kbar PH20and characterized by Fourier-transform infrared spectroscopy (FTIR) and Rietveld structure refinement. The infrared spectrum...
Synthesis and Catalytic Properties of Silicate-Intercalated Layered Double Hydroxides Formed by Intragallery Hydrolysis of Tetraethylorthosilicate
2-methyl-3-butyn-2-ol conversion Acidic and basic properties Intragallery hydrolysis Layered double hydroxides Silicate intercalation
2011/12/28
Layered double hydroxides (LDH's) interlayered with silicate anions were prepared by reaction of tetraethylorthosilicate (TEOS) with synthetic meixnerite-like precursors of the type [Mg1−xAlx(OH...
A NEXAFS Study of the Orientation of Benzoate Intercalated into a Layer Double Hydroxide
Double hydroxide Hydrotalcite NEXAFS Organic intercalates Preferred orientation
2011/12/29
NEXAFS is shown to be an excellent technique, of potentially widespread application, for the determination of the orientation of organic molecules intercalated in preferentially oriented thin films of...
Effect of the Dielectric Constant on the Double Layer on Clays
Dielectric constant Double layer potential Gouy model Montmorillonite Water
2012/2/2
Electric potentials as a function of distance were calculated for a model of the double layer on clays in which a surface zone a few water molecules thick has a low dielectric constant. This zone is f...