STARECKI, Florent; MORAIS, Sandy; CHAHAL, Radwan; BOUSSARD-PLÉDEL, Catherine; BUREAU, Bruno; PALENCIA, Fabien; LECOUTRE-CHABOT, Carole; GARRABOS, Yves; MARRE, Samuel; NAZABAL, Virginie

doi:10.1016/j.ijggc.2016.10.015

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STARECKI, Florent
Institut des Sciences Chimiques de Rennes [ISCR]

MORAIS, Sandy
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CHAHAL, Radwan
Institut des Sciences Chimiques de Rennes [ISCR]

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Article de revue

Ce document a été publié dans

International Journal of Greenhouse Gas Control. 2016, vol. 55, p. 36-41

Elsevier

Résumé en anglais

This paper reports the carbon dioxide detection in silicon-Pyrex high pressure microfluidic devices mimicking geological conditions encountered in deep saline aquifers using an in situ infrared optical sensor. The middle infrared source inserted inside the microchannel is based on infrared emission from Dy3+ sulfide glass fibers. The broad emission of the Dy3+ doping in infrared fibers is used to directly probe the CO2 thanks to the perfect overlap between the rare earth emission centered at 4.4 μm and the CO2 absorption band located at 4.3 μm. CO2 and water were clearly distinguished when using segmented flow on chip at pressures ranging from 4.5 to 6 MPa. These results demonstrate the feasibility of the infrared optical detection of other gases displaying absorption bands in the middle infrared domain for further developments of gas sensors, which can find applications in geological media monitoring and microfluidics.< Réduire

Mots clés en anglais

Carbon dioxide

Microreactors

Geological lab-on-chip

Optical absorption spectroscopy

Chalcogenide glass and fiber

Rare earth infrared luminescence

DOI

http://dx.doi.org/10.1016/j.ijggc.2016.10.015

Project ANR

Micro-laboratoires géologiques sur puce pour l'étude des processus clés du transport réactif multiphasique appliqués au stockage géologique du CO2.

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026