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Camphor leaf‑derived activated carbon prepared by conventional physical activation and its water adsorption profile KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/420620
Preparation of activated carbon from biomass residue with conventional steam activation was conducted to find the alternative raw materials for meeting the high demand for low-cost porous material in the desiccant application. In this study, activated carbons were produced from dead camphor leaves using two-step methods at different preparation temperatures. The characterization results revealed that the prepared activated carbons have a surface area of 700 m2/g, with 75% of microporosity. The water vapor sorption study reported that the water uptake of camphor leaf-based activated carbons was strongly affected by the pore properties of the materials. Moreover, from the water adsorption kinetics, it was observed that the rate constant of adsorption was varied at each relative pressure, which can be assumed that the water adsorption mechanism is different at each relative pressure. From these results, it was revealed that the prepared camphor leaf-based activated carbons have a promising ability to adsorb water vapor from humid air.
1 Introduction
2 Materials and methods
2.1 Preparation of biochars and ACs
2.2 Characterization
3 Results and discussion
3.1 Thermal degradation of camphor leaves
3.2 The effect of the preparation temperature on the yield and the properties of carbon materials
3.3 Water adsorption–desorption isotherm on camphor leaf-based activated carbon
3.4 Water adsorption kinetics on camphor leaf-based activated carbon
3.5 Comparison of specific surface area and water uptake of CL-derived ACs and other reported biomass-derived ACs
4 Conclusions
Acknowledgements
References
