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

doi:10.1016/j.carbon.2011.12.029

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 journal › Article › peer-review

5 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 language	English
Pages (from-to)	3310-3314
Number of pages	5
Journal	Carbon
Volume	50
Issue number	9
DOIs	https://doi.org/10.1016/j.carbon.2011.12.029
Publication status	Published - 2012 Aug

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)

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10.1016/j.carbon.2011.12.029

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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.",

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T1 - A quantitative analysis of a trace amount of hydrogen in high temperature heat-treated carbons

AU - Kashihara, Susumu

AU - Otani, Shoji

AU - Orikasa, Hironori

AU - Hoshikawa, Yasuto

AU - Ozaki, Jun Ichi

AU - Kyotani, Takashi

PY - 2012/8

Y1 - 2012/8

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AB - 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.

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

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