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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...
New insights into organic-mineral particles: composition, properties and models of molecular structure
Analytical pyrolysis Computational chemistry Molecular modelling Soil organic-mineral particles Xenobiotic complexes
2011/11/8
Organic-mineral soil particles are formed and altered as a result of pedogenic processes and anthropogenic impacts on soils. They can be isolated from
bulk soil samples by physical disaggregation fol...
Interlayer structure, anion dynamics, and phase transitions in mixed-metal layered hydroxides: Variable temperature 35Cl NMR spectroscopy of hydrotalcite and Ca-aluminate hydrate (hydrocalumite)
Cl -intercalated hydrotalcite Ca-aluminate hydrate Variable temperature
2012/3/31
The Cl NMR spectroscopy of Cl -intercalated hydrotalcite and the Ca-aluminate hydrate, the presence of
hydrocalumite (Friedel°Os salt) demonstrates dynamical behavior of interlayer C
dynamical orde...
Crystal structure of kanemite, NaHSi2O5·3H2O, from the Aris phonolite, Namibia
single-crystal X-ray diffraction kanemite NaHSi2O5·3H2O
2012/3/31
Kanemite was studied by single-crystal X-ray diffraction. The mineral, ideally NaHSi O °§3 O,2 5 2
is orthorhombic (space group Pbcn); unit-cell parameters are a = 4.946(3), b = 20.502(15), c = 7.275...
The synthesis and crystal structure of CaAlFSiO4, the Al-F analog of titanite
synthesis and crystal structure Al-F analog titanite CaAlFSiO4
2012/3/31
Aluminum-rich titanites [Ca(Ti,Al)(O,F)SiO ] with X > 0.53 [X = Al/(Al+Ti)], including the
pure end-member CaAlFSiOwere synthesized for the first time in a high-pressure experimental
was determined...
Incommensurate modulation and the crystal structure of ganophyllite
crystal structure ganophyllite selected-area electron diffraction
2012/3/31
Incommensurate modulation in ganophyllite crystals was investigated with selected-area electron
diffraction (SAED), high-resolution transmission electron microscopy (HRTEM), analytical elec-
tron mi...
Crystal structure of boralsilite and its relation to a family of boroaluminosilicates, sillimanite, and andalusite
boralsilite boroaluminosilicates sillimanite andalusite
2012/3/31
Boralsilite, Al B Si O , is monoclinic, space group C2/m, with a = 14.767(1), b = 5.574(1), c =
15.079(1) ?, ? = 91.96(1)?, and Z = 2. The structure was solved with direct methods and refined to an
...
The surface structure of a-Fe2O3 (001) by scanning tunneling microscopy: Implications for interfacial electron transfer reactions
surface structure scanning tunneling microscopy interfacial electron transfer reactions
2012/3/31
STM images of hematite (?-Fe O ) (001) surfaces taken under a wider variety of conditions than in
previous studies are presented. The results strongly suggest that only Fe sites contribute to the tun...
Toward the crystal structure of nagyagite, [Pb(Pb,Sb)S2] [(Au,Te)]
crystal structure of nagyagite [Pb(Pb,Sb)S2] [(Au,Te)]
2012/3/31
Synthetic nagyagite was grown from a melt as part of a search for materials with high-tempera-
ture superconductivity. Electron microprobe analyses of synthetic nagyagite and of nagyagite from
the t...
Single-crystal structure refinement of synthetic M4K-substituted potassic richterite K(KCa)Mg5Si8O22(OH)2
Single-crystal structure refinement M4 potassic richterite
2012/3/31
The crystal structure of a potassic richterite, K(KCa)Mg Si O (OH) synthesized at 15 GPa and
1400 ?C, was refined from single-crystal X-ray diffraction data. The unit-cell parameters are: a =
10.192...
High-pressure X-ray diffraction study on the structure of NaCl melt using synchrotron radiation
NaCl high-pressure X-ray synchrotron radiation
2012/3/30
MoltenNaClwasanalyzedbyhigh-pressureX-raydiffractionexperimentsusingsyn-
chrotronradiationupto5GPaand1600Calongthemeltingcurve.Theinterference
function Qi(Q)andthecorrelationfunction g(r)werederived...
Gillulyite Tl2(As,Sb)8S13: Reinterpretation of the crystal structure and order-disorder phenomena
Tl2(As,Sb)8S13:crystal structure order-disorder phenomena slabs
2012/3/31
ThecrystalstructureofgillulyiteTl (As,Sb) S wasreinterpretedbasedontheaverage
structuredeterminedbyFoitetal.(1995).ItconsistsofalternatingPbS-likeslabscom-
prisedofAs-SpolyhedraandTl-bearingslabswit...
A new pyroxene structure observed at high pressure: Single-crystal X-ray and Raman study of Pbcn-P21cn phase transition in protopyroxene
Single-crystal X-ray high pressure phase transition
2012/3/30
Thecrystalstructureof(Mg Li Sc )Si O protopyroxenehasbeenstudiedwithsin-
1.54 0.23 0.23 2 6
le-crystalX-raydiffractionatpressuresto9.98GPaandRamanspectroscopyto10.4cn
GPa.A?rst-orderdisplacivephase...
Composition, stability, and structure of a new member of the aenigmatite group, Na2Mg4+xFe3+2-2xSi6+xO20, synthesized at 13–14 GPa
Na2Mg4+xFe3+2-2xSi6+xO20 aenigmatite group 13-14GPa
2012/3/30
Anewphaseisostructuralwiththemineralsoftheaenigmatitegroup3Na
Mg FeSi O with x 0.25 0.5wassynthesizedat13¤C14GPawithasplit
2 4x 6x 2022x
sphereanvilapparatus(USSA-2000).Thestructure(for x 0.4)wasde...
Equation of state of MgSiO3 with the perovskite structure based on experimental measurements
MgSiO3 experimental measurement perovskite structure
2012/3/30
WestudiedMgSiO withtheperovskitestructureheatedtotemperaturesupto1500K3
atpressuresbetween36and110GPawithin-situX-raydiffraction.Thenewpressure-
volume-temperature(P-V-T)datawerecombinedwithliteratu...