Browsing ELibrary by Author "Farges F."

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ADSORPTION MECHANISMS OF TRIVALENT GOLD ON IRON- AND ALUMINUM-(OXY) HYDROXIDES. PART 1: X-RAY ABSORPTION AND RAMAN SCATTERING SPECTROSCOPIC STUDIES OF AU(III) ADSORBED ON FERRIHYDRITE, GOETHITE, AND BOEHMITE

Berrodier I.; Farges F.; Deveughèle M.; Brown G.E.; Benedetti M.; Winterer M. (2004)

Gold adsorption products on powdered ferrihydrite, goethite, and boehmite samples, prepared by reacting Au(III)-Cl solutions ([Au] = 4.2 × 10⁻⁵-9.0 × 10⁻³ M; [Cl] = 0.017–0.6 M) with these adsorbents at pH values of 4 to ...
AN X-RAY ABSORPTION FINE STRUCTURE AND NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY STUDY OF GALLIUM - SILICA COMPLEXES IN AQUEOUS SOLUTION

Pokrovski G.S.; Schott J.; Pokrovsky O.S.; Hazemann J.-L.; Farges F. (2002)

The influence of aqueous silica on gallium(III) hydrolysis in dilute (2 × 10−4 ≤ mGa ≤ 5 × 10−3) and moderately concentrated (0.02 ≤ mGa ≤ 0.3) aqueous solutions was studied at ambient temperature, using high resolution ...
CONTINUOUS CAUCHY WAVELET TRANSFORM ANALYSES OF EXAFS SPECTRA: A QUALITATIVE APPROACH

Munoz M.; Arogoul P.; Farges F. (2003)

To better understand the extended X-ray absorption fine structure (EXAFS) spectroscopic information obtained for complex materials such as those encountered in Earth materials, we propose to use the Continuous Cauchy Wavelet ...
COORDINATION CHEMISTRY OF TI(IV) IN SILICATE GLASSES AND MELTS: I. XAFS STUDY OF TITANIUM COORDINATION IN OXIDE MODEL COMPOUNDS

Farges F.; Brown G.E.; Rehr J.J. (1996)

The coordination environment of Ti(IV) in a variety of Ti-bearing crystalline oxide and silicate model compounds has been studied using Ti K-edge x-ray absorption fine structure (XAFS) spectroscopy at ambient temperature ...
COORDINATION CHEMISTRY OF TI(IV) IN SILICATE GLASSES AND MELTS: II. GLASSES AT AMBIENT TEMPERATURE AND PRESSURE

Farges F.; Brown G.E.; Navrotsky A.; Hao G.; Rehr J.J. (1996)

The coordination environment of Ti(IV) in a number of Ti-silicate and Ti-aluminosilicate glasses has been determined by x-ray absorption fine structure (XAFS) spectroscopy at the Ti K-edge at ambient temperature and pressure. ...
COORDINATION CHEMISTRY OF TI(IV) IN SILICATE GLASSES AND MELTS: III. GLASSES AND MELTS FROM AMBIENT TO HIGH TEMPERATURES

Farges F.; Brown G.E.; Navrotsky A.; Hao G.; Rehr J.R. (1996)

The local structural environment of Ti in five Na-, K-, and Ca-titanosilicate glass/melts with TiO2 concentrations ranging from 2.7-30.5 wt% has been determined by in situ Ti K-edge x-ray absorption fine structure (XAFS) ...
COORDINATION CHEMISTRY OF TITANIUM (IV) IN SILICATE GLASSES AND MELTS: IV. XANES STUDIES OF SYNTHETIC AND NATURAL VOLCANIC GLASSES AND TEKTITES AT AMBIENT TEMPERATURE AND PRESSURE

Farges F.; Brown G.E. (1997)

The coordination environment of Ti(IV) in seven natural and synthetic glasses of basaltic, trachytic, rhyolitic composition as well as four tektites has been studied using high-resolution Ti K-edge x-ray absorption near ...
IRON (III)-SILICA INTERACTIONS IN AQUEOUS SOLUTION: INSIGHTS FROM X-RAY ABSORPTION FINE STRUCTURE SPECTROSCOPY

Pokrovski G.S.; Schott J.; Farges F.; Hazemann J.-L. (2003)

The influence of aqueous silica on the hydrolysis of iron(III) nitrate and chloride salts in dilute aqueous solutions (mFe ~ 0.01 mol/kg) was studied at ambient temperature using X-ray absorption fine structure (XAFS) ...
MULTI-SPECTROSCOPIC STUDY OF FE(II) IN SILICATE GLASSES: IMPLICATIONS FOR THE COORDINATION ENVIRONMENT OF FE(II) IN SILICATE MELTS

Jackson W.E.; Farges F.; Yeager M.; Mabrouk P.A.; Rossano S.; Waychunas G.A.; Solomon E.I.; Brown Jr.G.E. (2005)

The coordination environment of Fe(II) has been examined in seven anhydrous ferrosilicate glasses at 298 K and 1 bar using 57Fe Mössbauer, Fe K-edge X-ray near edge structure (XANES), and extended X-ray absorption fine ...
OXIDATION STATE AND COORDINATION OF FE IN MINERALS: AN FE K-XANES SPECTROSCOPIC STUDY

Wilke M.; Farges F.; Petit P.-E.; Brown G.E.; Martin F. (2001)

High-resolution Fe K-edge XANES spectra of a series of crystalline Fe2+- and Fe3+-bearing model compounds were measured in an effort to correlate characteristics of the pre-edge feature with oxidation state and local ...
TRANSITION ELEMENTS IN WATER-BEARING SILICATE GLASSES/MELTS. PART I. A HIGH-RESOLUTION AND ANHARMONIC ANALYSIS OF NI COORDINATION ENVIRONMENTS IN CRYSTALS, GLASSES, AND MELTS

Farges F.; Brown G.E.; Petit P.E.; Munoz M. (2001)

The local structural environment around Ni(II) in a series of crystalline model compounds and K-Ni-, Na-Ni-, and Ca-Ni-silicate glasses and melts has been evaluated by using high-resolution Ni K-edge XANES spectroscopy and ...
TRANSITION ELEMENTS IN WATER-BEARING SILICATE GLASSES/MELTS. PART II. NI IN WATER-BEARING GLASSES

Farges F.; Munoz M.; Siewert R.; Malavergne V.; Brown G.E.; Behrens H.; Nowak M.; Petit P.E. (2001)

The local coordination environment around Ni(II) in a series of sodium trisilicate (NS3) and albitic (ALB) glasses has been evaluated by using high-resolution XANES and anharmonic EXAFS spectroscopies. The glasses contain ...

Browsing ELibrary by Author "Farges F."

Browsing ELibrary by Author "Farges F."

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