Size-dependent CO(2) capture in chemically synthesized magnesium oxide nanocrystals

[摘要]：The carbon dioxide storage capacity of magnesium oxide (MgO) particles was examined as a function of particle size, shape, and surface area. Two types of MgO nanocrystals (5 nm spheres and 23 nm disks) were synthesized and compared against commercially available MgO (325 mesh/44 mu m and 40 mesh/420 mu m). The surface area of the four types of particles was determined by N(2) gas adsorption. Carbon dioxide capture was measured at 60 degrees C and 600 degrees C using thermogravimetric analysis, with results indicating enhanced CO(2) capacity correlating with increased surface area.

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