Abstract
The aim of this study was to prepare activated carbon materials with different porous structures. For this purpose, the biomass precursor, beech wood, was carbonized in an inert atmosphere, and the obtained charcoal was physically activated using carbon dioxide at 1273 K. Different porous structures were obtained by controlling the time of the activation process. Prepared materials were characterized in terms of textural (N2 sorption at 77 K), structural (XRD), and sorption properties (CO2, C2H4, C4H10). The shortest activation time resulted in a mostly microporous structure, which provided a high sorption of CO2. Increasing the activation time led to an increasing of the pores’ diameters. Therefore, the highest ethene uptake was obtained for the material with an intermediate activation time, while the highest butane uptake was obtained for the material with the highest activation time.
Highlights
IntroductionMuch attention is being paid to environmental issues
Properties of Activated CarbonNowadays, much attention is being paid to environmental issues
Changes of sorption properties originate from different porous structures developed during the performed activation process
Summary
Much attention is being paid to environmental issues. More strict emission limits are being established in order to mitigate the negative influence on the surrounding environment. Some gases might be redundant and negatively affect some human activities. The following gases could be taken into consideration: carbon dioxide, ethene, and butane. Carbon dioxide is known as a greenhouse gas. It absorbs infrared radiation emitted from the heated surface of Earth, which results in an increasing average temperature [1]. It was estimated that before the industrial revolution, the concentration of CO2 was roughly
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