Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation.

• Shigeno Yoshihito

  Graduate School of International Cultural Studies, Tohoku University

• Evans James William

  Department of Materials Science and Mineral Engineering, University of California

• Yoh Itsumei

  Coulter Japan Scientific Instruments Company, Ltd

抄録

Pores within activated charcoal (A.C.) were infiltrated by pyrolitic carbon derived from thermal decomposition of CH₄. The infiltrated activated charcoal showed an increase in resistance against oxidation with CO₂. To elucidate the mechanism of this effect, the pore size distribution of macropores, mesopores and micropores including submicropores were characterized for the original A.C., infiltrated A.C., oxidized A.C. and A.C. oxidized after infiltration, respectively. It was found that the infiltration decreased the volume and the surface area of pores, particularly the surface area of micropores.<br> When oxidized, the carbon which deposited in macropores is almost burned but that in meso- and micropores is only partly burned; The ratio of increase in surface area of the infiltrated sample is smallest for the micropores. From these experimental results, it is deducible that the deposited carbon in micropores plays the major role for blocking CO₂ intruding, thereby the resistance against oxidation is enhanced.

収録刊行物

• ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ

  ＩＳＩＪ　Ｉｎｔｅｒｎａｔｉｏｎａｌ 37 (8), 738-747, 1997

  一般社団法人 日本鉄鋼協会

キーワード

• methane
• pyrolysis
• CVI
• chemical vapor infiltration
• activated charcoal
• pore
• micropore
• mesopore
• submicropore

詳細情報

• CRID: 1390001206452151680
• NII論文ID: 10002456507
• NII書誌ID: AA10680712
• DOI: 10.2355/isijinternational.37.738
• ISSN: 13475460
• ISSN: 09151559
• Web Site: http://www.jstage.jst.go.jp/article/isijinternational1989/37/8/37_8_738/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可