Development of KIT-5 and amine-functionalized KIT-5 for CO2 absorption

doi:10.1088/1742-6596/3003/1/012046

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Title:	Development of KIT-5 and amine-functionalized KIT-5 for CO2 absorption
Authors:	Qudoos, A.;Chew, T.L.;Oh, P.C.;Anbealagan, L.D.;Bustam, M.A.;Abro, M.A.;Ho, Chii-Dong;Jawad, Z.A.
Date:	2025-05
Issue Date:	2026-03-10 12:09:48 (UTC+8)
Abstract:	The rapid rise in carbon dioxide (CO2) levels in the atmosphere is a major cause of climate deterioration. Human activities, particularly over the past two centuries, have caused a substantial 50% increase in CO2 concentrations. This rise is directly linked to increasing the global temperatures and acid rain. CO2 capture using porous materials, such as mesoporous silica, is a promising mitigation approach because of its exceptional characteristics for instance, high pore volume, high surface area, and low cost. The KIT-5 is distinguished for its distinct 3-D, cubic structure with Fm3m symmetry. In this study, KIT-5 mesoporous silica was first synthesized via hydrothermal synthesis process and then was functionalized with Tetraethylenepentamine (TEPA) through an impregnation technique. The KIT-5 was analysed by different advanced characterization techniques i.e. X-ray Diffraction analysis (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Surface area porosity analysis (SAP). Characterization techniques revealed that the synthesized KIT-5 exhibited distinguished mesoporous for its well-defined cubic la3d structure and well-tunable pore size. After functionalization, the TEPA_KIT-5 showed almost the similar structure as that of the KIT-5, Ultimately, the KIT-5 and the TEPA_KIT-5 were subjected to CO2 adsorption study at 3 bar pressure and room temperature. KIT-5 showed 0.49 mmol-CO2/g-adsorbent capacity and TEPA_KIT-5 showed an adsorption capacity of 0.82 mmol-CO2/g, which was 67.3% higher than that of KIT-5.
Relation:	Journal of Physics Conference Series 3003 ,p. 012046
DOI:	10.1088/1742-6596/3003/1/012046
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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