Synthesis and gas-solid carbonation of mesoporous magnesium oxide under wet C0<sub>2</sub> - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2018

Synthesis and gas-solid carbonation of mesoporous magnesium oxide under wet C02

Résumé

Greenhouse gas emissions, in particular carbon dioxide, are considered as the main causes of the global warming. So, capture and storage of C02 coming from industrial installation are major environmental objectives. One way of C02 separation and capture is to use carbonation/decarbonation cycles on various capture masses. Among numerous candidates, magnesium oxide presents the advantage to form a thermodynamically stable carbonate, to be regenerable by simple heating, and to be available in large quantifies and at low-cost. If magnesium oxide has been largely studied for applications in catalysis, its use as C02 capture mass remains misunderstood. Thus the reaction of MgO carbonation made the object of few studies, and the main ones deal with utilization at high temperatures (300-350°C) and high C02 pressures (10-20 bar). In this work, we are interested in both the synthesis of magnesium oxide with high specific surface area, and its carbonation properties at atmospheric pressure. The way of synthesis of a mesoporous magnesium oxide is described, as well as the physico-chemical characterizations of such an oxide. The reaction of carbonation is followed by means of thermogravimetric experiments. The influences of temperature, C02 partial pressure and water vapor partial pressure are investigated. These results are completed by the characterizations of texture and morphological properties of the solid and their change during the reaction.
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Dates et versions

hal-01880919 , version 1 (25-09-2018)

Identifiants

  • HAL Id : hal-01880919 , version 1

Citer

Sondes Hamdi, Laetitia Vieille, Kais Nahdi, Loïc Favergeon. Synthesis and gas-solid carbonation of mesoporous magnesium oxide under wet C02. ESTAC12 - The 12th European Symposium on Thermal Analysis and Calorimetry, Central and Eastern European Committee for Thermal Analysis and Calorimetry (CEEC-TAC); Transilvania University of Brasov (UniTBv); National Institute for Laser, Plasma and Radiation Physics (INFLPR); Institute of Physical Chemistry "Ille G. Murgulescu" of the Romanian Academy (ICF); Commission for Thermal Analysis & Calorimetry of the Romanan Academy (CATCAR), Aug 2018, Brasov, Romania. pp.203 - PS1.019. ⟨hal-01880919⟩

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