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SO2 Adsorption Characteristics of PAN-based Activated Carbon Fiber Impregnated with Palladium and Gold Nanoparticles  

Lee, Jin-Jae (Department of Chemical Engineering, Hanyang University)
Jun, Moon-Gue (Department of Chemical Engineering, Hanyang University)
Kim, Young-Chai (Department of Chemical Engineering, Hanyang University)
Publication Information
Applied Chemistry for Engineering / v.18, no.5, 2007 , pp. 467-474 More about this Journal
Abstract
The palladium and gold nanoparticles containing PAN-based active carbon fiber (ACF) with a high specific surface area were prepared. Using the BET, TEM, FE-SEM, and XPS, their specific surface area and pore volume, pore structure, and the change in surface oxygen groups with time were analyzed and $SO_2$ adsorption performances were investigated. Because of the impregnating process, the micropore volume was mostly decreased from 95.5% to 30.5~43.7% compared with the total pore volume. And the change in surface oxygen groups with time was higher for the metal salt than the nanoparticles. Also, $SO_2$ breakthrough time of PAN-ACFs impregnated with Au nanoparticles and metal salts did not change compared with that of the non-impregnated PAN-ACF. But the PAN-ACF impregnated with Pd nanoparticles (100 ppm) showed good $SO_2$ adsorption performance as the breakthrough time of 880 sec. These results indicated that the $SO_2$ adsorption performance depended on the change in surface oxygen groups with time and the moderate impregnation of Pd nanoparticles on the PAN-ACF caused the increase in the $SO_2$ adsorption performance by a catalytic action.
Keywords
activated carbon fiber; $SO_2$ adsorption performance; Pd/Au nanoparticle;
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