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The utilization of Mg–O–F prepared from Mg (OH) 2 mixed with different wt % of F in the form of (NH 4 F·HF), calcined at 400 and 500 °C, for efficient capture of CO 2 is studied herein in a dynamic mode.
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Values of (ΔH) enthalpy changes corresponding to the...
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21 Μαρ 2023 · Mechanistic investigations employing in situ Raman and attenuated total reflection surface-enhanced infrared absorption spectroscopy unravel that Mg(OH) 2 plays a pivotal role to enhance the CO 2 RR kinetics by facilitating the first-step electron transfer to form anionic *CO 2 − intermediates.
1 Οκτ 2021 · Based on our results of CO 2 adsorption on MgO and Mg(OH) 2 surfaces, we identified three CO 2 polarization mechanisms, i.e. charge transfer to CO 2, electron localization within CO 2, and uneven electron distribution in two O atoms of CO 2, which are illustrated via variation of CO 2 electron localization function (ELF) after adsorption at ELF ...
1 Δεκ 2014 · CO 2 removal efficiency and absorption capacity (C:Mg ratio) were used to evaluate the absorption performance. Carbon dioxide removal efficiency increases with the increase of liquid height in the column, while the other parameters affect the efficiency in a more complex way.
4 Φεβ 2021 · One of the most promising materials for carbon mineralization is Mg(OH)2 which is highly reactive and capable of forming stable carbonates.
Values of (ΔH) enthalpy changes corresponding to the desorption steps of CO2 were calculated for the most active adsorbent in this study, that is, Mg(OH)2 + 20% F, at 400 and 500 °C. This study’s findings will inspire the simple preparation and economical design of nanocomposite CO2 sorbents for climate change mitigation under ambient conditions.
20 Οκτ 2022 · Abstract. CO 2 photoconversion to solar fuels requires materials with a high affinity to the acidic CO 2, and MgO and Mg (OH) 2 films represent good candidates due to their basic sites are highly active for CO 2 capture in a wide interval of temperatures.
