| Summary: | 碩士 === 國立聯合大學 === 化學工程學系碩士班 === 98 === In this work a series of highly microporous nitrogen-enriched activated carbons (MPF) for CO2 capture were prepared from suspension polymerization of melamine-phenol-formaldehyde resin beads by steam activation at different temperatures. The properties such as the porous structure, surface chemistry, and CO2 adsorption capacities of MPF were investigated and compared with phenol-formaldehyde resin derived activated carbon. CO2 capture performances were tested at 0℃, 25℃, and 50℃ by BET sorptometer. CO2 adsorption capacities of 6.71 mol kg-1 were achieved at 0℃ under 1 atm and decreased rapidly with increasing the adsorption temperature. It indicates that activated carbons in this work are suitable for application in temperature swing adsorption (TSA) process. Three models, Langmuir equation, Freundlich equation, and Redlich-Peterson equation were employed to analyze the adsorption isotherms of CO2 on activated carbons. The results showed that Redlich-Peterson equation was the best fit in this work.
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