FUEL 245 |
| Nanostructured carbon materials were synthesized by negative templating of faujacite zeolites with different carbon precursors and synthesis processes. Highly microporous carbon materials with different content of nitrogen and oxygen were obtained. The structure of the resulting materials was characterized by X-Ray diffraction, and their surface chemistry was analyzed by XPS and temperature programed desorption with mass spectrometry analysis (TPD-MS). The adsorption isotherms of nitrogen, carbon dioxide and were measured. The analysis by XPS and by TPD-MS showed that carbon are in sp2 state and that nitrogen and oxygen are inserted in the carbon structure. Significant differences were observed between the adsorption isotherms of the different materials. We observed that an intermediate thermal treatment increases significantly the adsorption capacity at low pressure for all gases. From all these characterizations, the mechanisms of carbon synthesis in confined geometry and the structure of the resulting materials are discussed. |
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Chemistry of Carbon Materials and Nanomaterials
1:30 PM-3:45 PM, Thursday, April 10, 2008 Morial Convention Center -- Rm. 242, Oral
Division of Fuel Chemistry |