Al2O3-Cact Derivatives: Synthesis and Properties
Keywords:sol-gel synthesis, composite adsorbents; alumina gel; activated carbon, thermal stability, adsorption
In the present work Al2O3-Cact binary derivatives were synthesized by sol-gel method. Thermal resistance of these
derivatives is 70 °C – 200 °C higher (depending on activated carbon type) compared to pure carbons. For the analysis of
these composites X-ray diffraction (XRD) and infrared spectroscopy (IR) were used.
The adsorption of acetone and water vapor as well as thermal regeneration at 100 °C of wet samples was
investigated. Results show that Al2O3-Cact
derivatives are hydrophobic: water vapor is adsorbed slowly; calculated low
values of adsorption coefficient show weak interaction between adsorbent and adsorbate. Acetone vapor adsorption is
fast, equilibrium is reached in 80 min – 120 min. Water vapor from the wet Al2O3-Cact surface is eliminated in ~70 min at
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