Abstract
That cellulose, as source of carbon materials, has a low char yield in pyrolysis can present serious difficulties. In this study, we focused on the effect of using sulfuric acid as a dehydration agent and examined the pyrolytic behavior of cellulose impregnated with sulfuric acid by using thermogravimetry and scanning electron microscopy. The mass yield of carbon after an 800 °C treatment in nitrogen was increased by 2-5 times with the addition of small amounts of sulfuric acid. Sample shrinkage during carbonization was also significantly reduced. These effects are interpreted as being the result of facilitated extraction of water from cellulose accompanied by development of extended carbon networks.
Original language | English |
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Pages (from-to) | 1818-1822 |
Number of pages | 5 |
Journal | Journal of the Korean Physical Society |
Volume | 60 |
Issue number | 10 |
DOIs | |
State | Published - May 2012 |
Keywords
- Carbonization
- Cellulose
- Dehydration
- Impregnation
- Pyrolysis
- Sulfuric acid