Abstract
A technique to determine a trace amount of hydrogen in carbon materials heat-treated above 1000 °C was developed. Three types of carbons prepared from poly(furfulyl alcohol), poly(vinyl chloride) and mesophase carbon microbeads were heat-treated at various temperatures ranging from 1000 to 1800 °C. Then they were gasified by O 2 in a fixed bed flow reactor, and the H 2O gases formed during the gasification processes were carefully monitored with a Karl Fischer moisture analyzer. As a result, this method makes it possible to determine the hydrogen contents in the carbons down to three places of decimals as a weight percent and can detect even a trace amount of hydrogen as low as 0.002 wt.%. A possible chemical structure of carbon edge sites was also discussed based on the experimentally determined hydrogen contents.
Original language | English |
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Pages (from-to) | 3310-3314 |
Number of pages | 5 |
Journal | Carbon |
Volume | 50 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2012 Aug |
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)