The Effect of the Modification of Carbon Spheres with ZnCl2 on the Adsorption Properties towards CO2 |
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| Authors: | Iwona Peł ech,Piotr Staciwa,Daniel Sibera,Ewelina Kusiak-Nejman,Antoni W. Morawski,Joanna Kapica-Kozar,Urszula Narkiewicz |
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| Affiliation: | 1.Department of Inorganic Chemical Technology and Environment Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Pułaskiego 10, 70-322 Szczecin, Poland; (I.P.); (D.S.); (E.K.-N.); (A.W.M.); (J.K.-K.); (U.N.);2.Department of General Civil Engineering, Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, Piastów 50a, 70-311 Szczecin, Poland |
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| Abstract: | ![]()
Zinc chloride and potassium oxalate are often applied as activating agents for carbon materials. In this work, we present the preparation of ZnO/carbon spheres composites using resorcinol-formaldehyde resin as a carbon source in a solvothermal reactor heated with microwaves. Zinc chloride as a zinc oxide source and potassium oxalate as an activating agent were applied. The effect of their addition and preparation conditions on the adsorption properties towards carbon dioxide at 0 °C and 25 °C were investigated. Additionally, for all tested sorbents, the CO2 sorption tests at 40 °C, carried out utilizing a thermobalance, confirmed the trend of sorption capacity measured at 0 and 25 °C. Furthermore, the sample activated using potassium oxalate and modified using zinc chloride (a carbon-to-zinc ratio equal to 10:1) displayed not only a high CO2 adsorption capacity (2.69 mmol CO2/g at 40 °C) but also exhibited a stable performance during the consecutive multicycle adsorption–desorption process. |
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| Keywords: | carbon spheres carbon dioxide adsorption microwave reactor zinc oxide zinc chloride |
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