| Summary: | In this work we have analyzed the synthesis of microporous materials using sucrose as carbon source and porous clay heterostructures as template to promote a hierarchical organization of pores, which is a novelty in the synthesis of carbonaceous materials. The study comprises the evaluation of the synthesis conditions such as the addition of a base (KOH) or the variation of the pyrolysis temperature (600, 750 and 900 °C). The studied materials were characterized via X ray diffraction, Transmission Electron Microscopy, gas adsorption, Attenuated Total Reflectance, Raman spectroscopy and X-ray Photoelectron Spectroscopy. Additionally, the performance of the synthesized adsorbents in terms of CO2 uptake at three temperatures (0, 25 and 45 °C) was assessed and compared with similar materials reported in the literature. The results suggested by and large that the use of the base and the highest pyrolysis temperature (900 °C) during the synthesis enhances the CO2 adsorption at the different evaluated temperatures. Nonetheless, it is at the lowest pyrolysis temperature i.e., 600 °C, where one can observe a more accentuated superior performance of the material synthesized with base than that obtained without the addition of KOH.
|
|---|