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Journal of Materials Science

, Volume 30, Issue 24, pp 6249–6252 | Cite as

Structure and properties of a moulded carbon derived from rice hull

  • A. Oya
  • N. Kishimoto
  • S. Mashio
  • K. Kumakura
  • T. Suzuki
  • B. Serrano-Talavera
  • A. Linares-Solano
Article

Abstract

Rice hull was moulded into a tube (outer diameter: 54 mm; inner diameter: 17 mm, length: c. 170 mm) by use of an extruder and then carbonized in nitrogen atmosphere below 1000 °C. Ash content of the hull was 16 wt%, of which c. 94 and 4 wt% were SiO2 and K2O, respectively. Carbon yield and shrinkage of the mould after carbonization at 1000 °C were 42 wt%, and 43 vol%, respectively. The bulk density increased with rising of carbonization temperature to reach to 0.93 g ml−1 at 1000 °C via 0.82 g ml−1 at 500 °C. The largest compressive strength of 3.6 MPa was obtained after carbonization at 1000 °C. No micropore was developed after carbonization, and the total pore volume measured by a mercury porosimeter was 0.25–0.31 ml g−1 after carbonization. These data were compared with those of charcoal.

Keywords

Polymer SiO2 Mercury Shrinkage Compressive Strength 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • A. Oya
    • 1
  • N. Kishimoto
    • 2
  • S. Mashio
    • 2
  • K. Kumakura
    • 2
  • T. Suzuki
    • 2
  • B. Serrano-Talavera
    • 3
  • A. Linares-Solano
    • 3
  1. 1.Faculty of EngineeringGunma UniversityGunmaJapan
  2. 2.Meiji Machine Co. Ltd.TochigiJapan
  3. 3.Faculty of ScienceUniversity of AlicanteAlicanteSpain

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