Influence of sulfuric acid impregnation on the carbonization of cellulose

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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 languageEnglish
Pages (from-to)1818-1822
Number of pages5
JournalJournal of the Korean Physical Society
Volume60
Issue number10
DOIs
StatePublished - May 2012

Keywords

  • Carbonization
  • Cellulose
  • Dehydration
  • Impregnation
  • Pyrolysis
  • Sulfuric acid

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