A quantitative analysis of a trace amount of hydrogen in high temperature heat-treated carbons

Susumu Kashihara, Shoji Otani, Hironori Orikasa, Yasuto Hoshikawa, Jun Ichi Ozaki, Takashi Kyotani

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)3310-3314
Number of pages5
JournalCarbon
Volume50
Issue number9
DOIs
Publication statusPublished - 2012 Aug

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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