Application of Low-Voltage Field-Emission SEM to the Study of Internal Pore Structures of Activated Carbon
| Autor: | R. L. Ornberg, J. Liu |
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| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Proceedings, annual meeting, Electron Microscopy Society of America. 54:138-139 |
| ISSN: | 2690-1315 0424-8201 |
| DOI: | 10.1017/s0424820100163150 |
| Popis: | Activated carbon has interesting and useful properties for industrial applications. It has been used extensively in purification, separation, chemical recovery and catalysis. To achieve a predictable performance of activated carbon materials, it is necessary to develop a comprehensive understanding of the pore structure including pore size, pore shape, and pore surface chemistry. Macropores (> 50 nm), mesopores (2-50 nm) and micropores (< 2 nm) generally coexist in activated carbon. It is thus desirable to synthesize activated carbon with controlled pore structures to optimize its performance. We previously reported the characterization of thesurface pore structureof activated carbon by field emission SEM (FESEM) and the examination of theinternal pore structureby HAADF/HRTEM techniques.1However, both HAADF and HRTEM techniques give only limited information about the carbon pore structure. We report here some preliminary observation of the internal pore structure of activated carbon by high resolution low voltage FESEM technique. |
| Databáze: | OpenAIRE |
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