Synthesis and Characterization of Double Pore Size Multiphase Materials from Waste Aluminum Slag and Activated Carbon

Abstract:

A new type of double pore size activated alumina/activated carbon multiphase material was made by using waste aluminum slag and activated carbon as main raw materials. The microstructures and pore size distribution of the new material were characterized by SEM and BET techniques. Iodine adsorption value was used to evaluate the adsorption performance of the multiphase materials, and the benzene adsorption capability was also measured. The results show that the specific surface area of the activated alumina/activated carbon multiphase materials is 261.95m²/g, pore volume can reach 0.25m³/g, and the iodine adsorption value is 381.97mg/g. BET pore size distribution shows that micropores and mesopores both exist in the composite material. The micropores range from 0.6 to 1.4nm, and the mesopores range from 3.0 to 7.0nm. The benzene adsorption capability of this new material is excellent, with a saturated adsorption capacity of 241.00 mg/g, much better than pure activated alumina or activated carbon.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 626-630
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.626
• Online since: June 2012
• Authors: Yan Qing Chen, Ren Ping Wu
• Keywords: Activated Carbon, Double Pore Size, Multiphase Materials, Waste Aluminum Slag

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