Search Results - "Grangeon, Sylvain"
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Mineralogical transformations in polymetallic nodules and the change of Ni, Cu and Co crystal-chemistry upon burial in sediments
Published in Geochimica et cosmochimica acta (01-08-2020)“…Polymetallic nodules from the Clarion and Clipperton Zone of the equatorial Pacific Ocean were studied using X-ray diffraction, X-ray absorption,…”
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X‐ray diffraction: a powerful tool to probe and understand the structure of nanocrystalline calcium silicate hydrates
Published in Acta crystallographica Section B, Structural science, crystal engineering and materials (01-10-2013)“…X‐ray diffraction (XRD) patterns were calculated and compared to literature data with the aim of investigating the crystal structure of nanocrystalline calcium…”
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3
Structure of nanocrystalline calcium silicate hydrates: insights from X-ray diffraction, synchrotron X-ray absorption and nuclear magnetic resonance
Published in Journal of applied crystallography (01-06-2016)“…The structure of nanocrystalline calcium silicate hydrates (C–S–H) having Ca/Si ratios ranging between 0.57 ± 0.05 and 1.47 ± 0.04 was studied using an…”
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4
Zn sorption modifies dynamically the layer and interlayer structure of vernadite
Published in Geochimica et cosmochimica acta (15-05-2012)“…In surficial environments, the fate of many trace metals is influenced by their interactions with the phyllomanganate vernadite, a nano-sized and turbostratic…”
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5
A quantitative and mechanistic model for the coupling between chemistry and clay hydration
Published in Geochimica et cosmochimica acta (15-08-2020)“…•Smectite water vapor isotherms modelled using an ion exchange formalism.•Model accounting for the interlayer composition and relative humidity.•Model…”
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6
Mercury speciation in a tropical soil association; Consequence of gold mining on Hg distribution in French Guiana
Published in Geoderma (15-11-2009)“…Mercury (Hg) speciation was compared in French Guiana pristine soils and in Hg-contaminated soils impacted by former (~ 1950's) gold mining activities which…”
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7
Evidence of Multiple Sorption Modes in Layered Double Hydroxides Using Mo As Structural Probe
Published in Environmental science & technology (16-05-2017)“…Layered double hydroxides (LDHs) have been considered as effective phases for the remediation of aquatic environments, to remove anionic contaminants mainly…”
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8
Phase quantification using deep neural network processing of XRD patterns
Published in IUCrJ (01-09-2024)“…Mineral identification and quantification are key to the understanding and, hence, the capacity to predict material properties. The method of choice for…”
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9
A novel and easy chemical-clock synthesis of nanocrystalline iron–cobalt bearing layered double hydroxides
Published in Journal of colloid and interface science (15-11-2014)“…[Display omitted] •Hexaamminecobalt trichloride reacts spontaneously with ferrous chloride in anoxic conditions.•A dramatic color change of the solution is…”
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10
Cryptomelane formation from nanocrystalline vernadite precursor: a high energy X-ray scattering and transmission electron microscopy perspective on reaction mechanisms
Published in Geochemical transactions GT (02-09-2015)“…Background Vernadite is a nanocrystalline and turbostratic phyllomanganate which is ubiquitous in the environment. Its layers are built of (MnO 6 ) 8−…”
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11
Mineralogical and geochemical composition of a cementitious grout and its evolution during interaction with water
Published in Npj Materials degradation (17-07-2024)“…In the present study, the chemical composition, mineralogy, and mechanisms of alteration of a cementitious grout based on a CEM III/C with addition of…”
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12
Characterization of Nanoparticles in Ethanolic Suspension Using Single Particle Inductively Coupled Plasma Mass Spectrometry: Application for Cementitious Systems
Published in ACS omega (16-07-2024)“…Single particle inductively coupled plasma mass spectrometry (spICP-MS) is a well-established technique to characterize the size, particle number concentration…”
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13
The influence of natural trace element distribution on the mobility of radionuclides. The exemple of nickel in a clay-rock
Published in Applied geochemistry (01-01-2015)“…•Ni distribution in the Callovian–Oxfordian formation (Bure, France) was investigated.•Ni is mainly borne by pyrite (Py), chlorite and organic matter…”
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14
Deciphering mineralogical changes and carbonation development during hydration and ageing of a consolidated ternary blended cement paste
Published in IUCrJ (01-03-2018)“…To understand the main properties of cement, a ubiquitous material, a sound description of its chemistry and mineralogy, including its reactivity in aggressive…”
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15
Study of Iron-Bearing Dolomite Dissolution at Various Temperatures: Evidence for the Formation of Secondary Nanocrystalline Iron-Rich Phases on the Dolomite Surface
Published in ACS earth and space chemistry (21-09-2017)“…We investigated the dissolution of a natural Fe-containing dolomite [Ca1.003Mg0.972Fe0.024Mn0.002(CO3)2] under acidic conditions (pH 3–5.5) with atomic force…”
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16
Diurnal production of gaseous mercury in the alpine snowpack before snowmelt
Published in Journal of Geophysical Research - Atmospheres (16-11-2007)“…In March 2005, an extensive mercury study was performed just before snowmelt at Col de Porte, an alpine site close to Grenoble, France. Total mercury…”
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Thermodynamic properties of chlorite and berthierine derived from calorimetric measurements
Published in Physics and chemistry of minerals (01-09-2014)“…In the context of the deep waste disposal, we have investigated the respective stabilities of two iron-bearing clay minerals: berthierine ISGS from Illinois…”
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18
Modeling the Acid–Base Properties of Montmorillonite Edge Surfaces
Published in Environmental science & technology (20-12-2016)“…The surface reactivity of clay minerals remains challenging to characterize because of a duality of adsorption surfaces and mechanisms that does not exist in…”
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19
Molecular-level understanding of metal ion retention in clay-rich materials
Published in Nature reviews. Earth & environment (01-07-2022)“…Clay minerals retain or adsorb metal ions in the Earth’s critical zone. Rocks, sediments and soils rich in clay minerals can concentrate rare earth elements…”
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An evaluation of the consistency of data and models for performance assessment: Divalent metal sorption on montmorillonite
Published in Applied clay science (01-12-2024)“…A detailed analysis of literature data on the retention of divalent metal by purified montmorillonite or montmorillonite-rich material (e.g. bentonite) was…”
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