ISSN: 1304-7191 | E-ISSN: 1304-7205
Synthesis of Silica Xeorogel@Mg-Al layered double hydroxide composite for CO2 capture
1Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Istanbul, Turkey
Sigma J Eng Nat Sci - DOI: 10.14744/sigma.2023.00024
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Today, the increase in the level of CO2 gas in the atmosphere has started to cause concern. Therefore, an appropriate and rapid decrease in CO2 gas emission levels has become a significant challenge. Capturing CO2 on a solid surface is proposed due to its ease of application, relatively low energy requirements, and applicability in various processes. This study investigated the preparation of Xerogel@MgAl LDH (X@MAL) composite for CO2 capture. Firstly, silica-based xerogel was synthesized by the acid and base-catalyzed two-step sol-gel method. Then, the X@MAL composite was prepared by the co-precipitation method. Based on the CO2 capture analysis, the maximum CO2 capture capacity of the composite at 25 °C, 75 °C, and 100 °C was 1.90 mmol.g-1, 0.70 mmol.g-1, and 0.40 mmol.g-1, respectively. The kinetic analysis results show that the CO2 capture of X@MAL can be well-defined by Avrami kinetic model.