Abstract
Mg-loaded activated carbons were prepared by adding various amounts of Mg (1 to 20 wt%) via ultrasonic-assisted impregnation to investigate the effects on the adsorption and desorption characteristics of ammonia. Mg-loaded activated carbons were characterized by TGA, BET, SEM, EDS mapping, and NH3-TPD analysis. Mg was homogeneously dispersed on the activated carbon and NH3-TPD analysis confirmed improved desorption and thermal stability for the 10 wt% Mg sample, named AC-Mg(10). AC-Mg(10) retained the highest desorption for five cycles and showed average desorption amount of 0.788 mmol NH3/g. During the breakthrough analysis, the AC-Mg(10) showed an initial ammonia adsorption capacity of 0.81 mmol NH3/g and average adsorption capacity of 0.69 mmol NH3/g over 30 adsorption and desorption cycles.
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This work was conducted under the framework of the Research and Development Program of the Korea Institute of Energy Research (KIER) (C0-2421). This work was also supported by a research fund of Chungnam National University.
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Park, J.H., Ur Rasheed, H., Cho, K.H. et al. Effects of magnesium loading on ammonia capacity and thermal stability of activated carbons. Korean J. Chem. Eng. 37, 1029–1035 (2020). https://doi.org/10.1007/s11814-020-0508-3
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DOI: https://doi.org/10.1007/s11814-020-0508-3