Implementation of in situ SAXS/WAXS characterization into silicon/glass microreactors.
CHAVEZ PANDURO, Elvia Anabela
Institut des Molécules et Matériaux du Mans [IMMM]
European Synchrotron Radiation Facility [ESRF]
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Institut des Molécules et Matériaux du Mans [IMMM]
European Synchrotron Radiation Facility [ESRF]
CHAVEZ PANDURO, Elvia Anabela
Institut des Molécules et Matériaux du Mans [IMMM]
European Synchrotron Radiation Facility [ESRF]
Institut des Molécules et Matériaux du Mans [IMMM]
European Synchrotron Radiation Facility [ESRF]
LECOUTRE-CHABOT, Carole
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
< Réduire
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
Langue
en
Article de revue
Ce document a été publié dans
Lab on a Chip. 2015, vol. 15, n° 9, p. 2002-2008
Royal Society of Chemistry
Résumé en anglais
A successful implementation of in situ X-ray scattering analysis of synthetized particle materials in silicon/glass microreactors is reported. Calcium carbonate (CaCO3) as a model material was precipitated inside the ...Lire la suite >
A successful implementation of in situ X-ray scattering analysis of synthetized particle materials in silicon/glass microreactors is reported. Calcium carbonate (CaCO3) as a model material was precipitated inside the microchannels through the counter-injection of two aqueous solutions, containing carbonate ions and calcium ions, respectively. The synthesized calcite particles were analyzed in situ in aqueous media by combining Small Angle X-ray Scattering (SAXS) and Wide Angle X-ray Scattering (WAXS) techniques at the ESRF ID02 beam line. At high wavevector transfer, WAXS patterns clearly exhibit different scattering features: broad scattering signals originating from the solvent and the glass lid of the chip, and narrow diffraction peaks coming from CaCO3 particles precipitated rapidly inside the microchannel. At low wavevector transfer, SAXS reveals the rhombohedral morphology of the calcite particles together with their micrometer size without any strong background, neither from the chip nor from the water. This study demonstrates that silicon/glass chips are potentially powerful tools for in situ SAXS/WAXS analysis and are promising for studying the structure and morphology of materials in non-conventional conditions like geological materials under high pressure and high temperature.< Réduire
Project ANR
/ - ANR-09-PIRI-0004
Micro-laboratoires géologiques sur puce pour l'étude des processus clés du transport réactif multiphasique appliqués au stockage géologique du CO2.
Micro-laboratoires géologiques sur puce pour l'étude des processus clés du transport réactif multiphasique appliqués au stockage géologique du CO2.
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