Synthesis of carbon molecular sieves from palm shell by carbon vapor deposition
A series of experiments were conducted to produce carbon molecular sieves (CMS) through carbon deposition from a locally available palm shell of Tenera type for separating gaseous mixtures. The process involves three stages; carbonization, physical activation with steam, and carbon deposition by usi...
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| Main Authors: | , , |
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| Format: | Article |
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Springer Verlag
2007
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| Subjects: | |
| Online Access: | http://eprints.um.edu.my/7479/ http://link.springer.com/article/10.1007/s10934-006-9032-z#page-1 |
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| Summary: | A series of experiments were conducted to produce carbon molecular sieves (CMS) through carbon deposition from a locally available palm shell of Tenera type for separating gaseous mixtures. The process involves three stages; carbonization, physical activation with steam, and carbon deposition by using benzene cracking technique. Carbonization of the dried palm shells was occurred at 900 degrees C for duration of 1 h followed by steam activation at 830 degrees C for 30-420 min to obtain activated carbons with different degree of burn-offs. The highest micropore volume of activated carbon obtained at 53.2 burn-off was used as a precursor for CMS production. Subsequent carbon deposition of the activated sample at temperature range from 600 to 900 degrees C for 30 min has resulted in a series of CMSs with different selectivities of CO2/CH4 and O-2/N-2. The kinetic adsorption isotherm of CO2, CH4, O-2 and N-2 at room temperature also presented in this work. |
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