Barium oxide - Manganese oxide composite by co-precipitation for Carbon dioxide (CO2) capture

Nor Azman, Muhammad Azli Yusof (2025) Barium oxide - Manganese oxide composite by co-precipitation for Carbon dioxide (CO2) capture. [Project Paper] (Submitted)

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Abstract

Carbon dioxide is produced by human activity due to the increasing population of human. The transition element of manganese oxide (MnO) exhibits a wide range of basicity and oxidation states, making them versatile for reactions compared to non-transition elements. Therefore, by adding alkali earth metal oxides of BaO can enhance the basicity strength of MnO. This study focuses on improving manganese oxide's CO2 adsorption properties by the addition of BaO. The samples were characterized by using X-ray diffraction (XRD) with the MnO less compositions overlapped compared to BaO-MnO. N2 adsorption-desorption isotherm, MnO-A series exhibits isotherm Type III with hysteresis H3, MnO-N series exhibits isotherm Type II with hysteresis H5 and BaO-MnO series exhibits isotherm Type III hysteresis H3. The basicity strength enhanced at weak and strong site shown at Temperature Desorption Program (TPD). The finding reveals that the most efficient is BaO-MnO-A7 with the amount of CO2 capacity for chemisorbtion and physisorbtion are 1273.59 mg/g and 10.04 mg/g, respectively. The CO2 adsorption isotherm at 25°C was assessed with the adsorption isotherm model found that Freundlich model to be the best fit which implies the multilayer adsorption onto heterogeneity surfaces.

Item Type:	Project Paper
Subjects:	Q Science > QD Chemistry
Faculty:	Faculty of Humanities, Management and Science
Depositing User:	Mr. Azman Mohamad
Date Deposited:	08 Dec 2025 07:55
Last Modified:	08 Dec 2025 07:55
URI:	http://psaspb.upm.edu.my/id/eprint/2643

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