title: Mechanical activation of CaO-based adsorbents for CO(2) capture.
abstract: The reversible cycling of CaO adsorbents to CaCO(3) for high-temperature CO(2) capture is substantially improved by mechanical treatment. The mechanical milling intensity and conditions of grinding (e.g., wet vs. dry, planetary vs. vibratory milling) were determined to be the main factors that control the effectiveness of the mechanochemical synthesis to enhance the recycling stability of the sorbents prepared. In addition, MgO was used as an example of an inert binder to help mitigate CaCO(3) sintering. Wet planetary milling of MgO into CaCO(3) allowed efficient particle size reduction and the effective dispersion of MgO throughout the particles. Wet planetary milling yielded the most stable sorbents during 50 cycles of carbonation-calcination.
authors.affiliation: Department of Chemical and Biomolecular Engineering, School of Chemical Sciences, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801, USA.
authors.forename: Maryam
authors.initials: M
authors.lastname: Sayyah
authors.forename: Yongqi
authors.initials: Y
authors.lastname: Lu
authors.forename: Richard I
authors.initials: RI
authors.lastname: Masel
authors.forename: Kenneth S
authors.initials: KS
authors.lastname: Suslick
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control; D002119:Calcium Carbonate / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry*; D008277:Magnesium Oxide / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*
chemical_list: D000393:Air Pollutants; D017610:Calcium Compounds; D010087:Oxides; D002245:Carbon Dioxide; D008277:Magnesium Oxide; C016538:lime; D002119:Calcium Carbonate