الابحاث

​Commercial activated carbon (AC) was selected and impregnated with sodium hydroxide. The carbons were characterized for their surface area, morphology, and functional groups. BET surface area analysis illustrates an average surface area of ca. 1000 m2/g with an average pore radius of 1.5 nm. SEM analysis provided agglomerated particles with sizes of sub-micrometer. The surface acidity of the impregnated AC showed an increase in pHzpc on the raw AC. Both carbons illustrated several functional groups with an increase in the hydroxyl group with impregnation. Adsorption capacities for both carbons against CO2, N2O, and 10% CO2 in an N2O gas mixture were studied by volumetric analysis and using a newly developed apparatus. The corresponding saturation capacities are 101, 60.39, and 90 mg/g, respectively. The gas mixture was chosen to simulate the exhaust CO2 gas from mobile sources. Both carbons demonstrated saturation capacities for gas mixtures with values higher than those of pure gases. This AC might be used as a support for catalytic conversion of CO2 to hydrocarbons from mobile sources where N2O exists as a major interference.

https://www.researchgate.net/publication/378164093_Adsorption_and_interaction_of_CO2_and_N2O_on_NaOH-impregnated_activated_carbon_surface​