IEC 181 |
| Lisa Huggins1, Veronica Carneiro1, Curtis Lee2, Seung Kon Ryu3, Dan D. Edie2, and Young Seak Lee2. (1) Claflin University, Box #4370, Orangeburg SC 29115, Orangeburg, SC 29115, (2) Center for Advanced Engineering Fibers and Films, Clemson University, Department of Chemical Engineering, Clemson, SC 29634, (3) Chungnam National University, Daegon, South Korea |
| It is believed that metal-doped activated carbon fibers, preferably with 1% of silver nitrate, will have a uniform distribution of mesopores. The presence of mesopores with a pore diameter of 20-500 Å can be made to adsorb specific molecules within the size range. The ACFs made from the precursor pitch provided by Cononco and from colleagues in Korea of different winding speeds. However, at every speed a raw and carbon fiber was spun, a mixed sample was spun at the same speed for comparison. The carbon fibers were then stabilized with oxygen and carbonized using a mixture a steam and nitrogen. A surface study of the ACFs was conducted using a Micromeritics® BET analyzer. A comparison of the raw and mixed ACFs showed that there was uniform porosity, a higher surface area and pore volume in the mixed samples. The silver particles are known to gasify carbon during the carbonization step that can be used to explain these findings. However, the average pore size found in the mixed samples is 10Å, that corresponds to the size of a micropore that is within the range of 0-20 Å. The size of the silver particles may have contributed to this result since it is the impression of the silver particles that give rise to the pores. |
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General Poster Session
5:00 PM-7:00 PM, Tuesday, March 25, 2003 Convention Center -- Hall G, Poster
Division of Industrial and Engineering Chemistry |