Influence of oxidation on the preparation of porous carbons from phenol- formaldehyde resins with KOH activation

Hsisheng Teng, Sheng Chi Wang

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25 Citations (Scopus)

Abstract

The influence of oxidation on the production of high-porosity carbons from phenol-formaldehyde resins with KOH activation were examined under various preparation conditions. The activation process principally consisted of KOH impregnation followed by carbonization. Experimental results showed that prior to carbonization treating the resins with oxygen at 120 °C, either before or after KOH impregnation, enabled the enhancement of the yield of the carbon products. The porosity development was found to be hindered by conducting oxidation prior to the impregnation. For oxidation performed after the impregnation, at a low KOH/resin ratio the porosity was found to decrease upon oxidation, whereas the oxidation enhanced porosity development for activation performed at higher ratios. Varying the carbonization temperature and time did not show obvious influence on the effects of the oxidation.

Original languageEnglish
Pages (from-to)673-678
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume39
Issue number3
DOIs
Publication statusPublished - 2000 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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