CO2 derived nanoporous carbons for carbon capture
2020
Abstract Nanoporous carbons (NPCs) were synthesized from CO2 with magnesiothermic reduction for CO2 capture applications. The yield of NPCs was enhanced by a modified magnesiothermic reduction process, in which CO2 instead of Ar was applied to the reactor during heating Mg powders from 500 °C to a given reaction temperature (800–900 °C). The yields, microstructures, pore structures and CO2 adsorption properties were investigated for a variety of NPCs synthesized under various conditions of reaction temperature and duration (15–60 min). The results show that the synthesized NPCs are mainly mesoporous and composed of well crystalline carbon nanosheets interwoven with amorphous carbon. The yield, BET surface area, total pore volume, narrow microporosity (pore size
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