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Development of carbon alloy for selective recovery of hydrogen gas under low pressure and for hydrogen-isotope separation

Research Project

Project/Area Number 21550195
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic industrial materials
Research InstitutionTokyo National College of Technology

Principal Investigator

AKUZAWA Noboru  東京工業高等専門学校, 物質工学科, 教授 (70042702)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords層状 / 層間化合物 / 水素 / 低圧水素回収 / 水素同位体分離 / カーボンアロイ / ナノスペース
Research Abstract

Hydrogen-sorption isotherms of alkali metal-doped carbons at 77 K were determined for promoting application of these materials as hydrogen-recovery and isotope-separation agent. The hydrogen-sorption behavior of rubidium-doped Grafoil, with composition of RbC24, showed high sorption ability against hydrogen at low pressure. Taking into account the fact that sorption-desorption was fast and reversible, and the equilibrium pressure at half coverage was very low, i. e. 40 Pa, RbC24 prepared from Grafoil is promising as a recovery agent for hydrogen gas at low pressure. The hydrogen(H2)/deuterium(D2)-sorption isotherms of potassium-doped carbons with composition of KC10, prepared from multi wall carbon nanotube(MWCNT) and carbons derived from petroleum cokes with heat-treatment temperatures of 1000 and 1500°C, were also determined. Isotope separation coefficient was estimated from those isotherms. A very large isotope effect was found for KC10 prepared from MWCNT, compared with those prepared from carbons with heat-treatment temperatures of 1000 or 1500°C. However, a severe problem was found for KC10(MWCNT) that repetition of the sorption-desorption cycles resulted in the decrease of the sorbed amount of H2 and D2.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (10 results)

All 2012 2011 2010 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (4 results)

  • [Journal Article] Superconductive CaC6 prepared from flexible graphite sheets2012

    • Author(s)
      Matsumoto, R、Nakajima, M、Takano, Y、Mizuguchi, Y、Akuzawa, N
    • Journal Title

      Solid State Communications

      Volume: 152 Pages: 767-770

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Superconductive CaC_6 prepared from flexible graphite sheets2012

    • Author(s)
      R.Matsumoto, et al
    • Journal Title

      Solid State Communications

      Volume: 152 Pages: 767-770

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] アルミナ溶融塩電解に伴うカソード黒鉛の電気抵抗変化-電解温度の効果-2011

    • Author(s)
      阿久沢昇、古茂田朋寛、玉田耕治、平山貴啓、今川博
    • Journal Title

      炭素

      Volume: 249 Pages: 191-194

    • NAID

      10029546929

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] アルミナ溶融塩電解に伴うカソード黒鉛の電気抵抗変化-電解温度の効果-2011

    • Author(s)
      可久沢昇, 他
    • Journal Title

      炭素

      Volume: No.249 Pages: 191-194

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of alkali metal-doped carbons for hydrogen recovery and isotope separation2011

    • Author(s)
      N.Akuzawa, et al.
    • Journal Title

      J.Nanoscience and Nanotechnology

      Volume: 11 Pages: 1-4

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Application of alkali metal-doped carbons for hydrogen recovery and isotope separation

    • Author(s)
      N.Akuzawa, et al.
    • Journal Title

      J.Nanoscience and Nanotechnology (Accepted)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 乱層構造炭素へのカリウムドーピングと水素吸着2011

    • Author(s)
      梅田礼二、阿久沢昇
    • Organizer
      第38回炭素材料学会年会
    • Place of Presentation
      愛知県名古屋市
    • Year and Date
      2011-11-29
    • Related Report
      2011 Final Research Report
  • [Presentation] 乱層構造炭素へのカリウムドーピングと水素吸着2011

    • Author(s)
      梅田礼二, 他
    • Organizer
      第38回炭素材料学会年会
    • Place of Presentation
      名古屋(名古屋大学)
    • Year and Date
      2011-11-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] カリウム「黒鉛層間化合物による水素吸収と同位体分離2010

    • Author(s)
      荏畑さつき、阿久沢昇, 他
    • Organizer
      第37回炭素材料学会年会
    • Place of Presentation
      姫路市民会館
    • Year and Date
      2010-12-01
    • Related Report
      2010 Annual Research Report
  • [Presentation] Application of alkali metal-doped carbons for recovery and isotope separation of hydrogen gas2010

    • Author(s)
      N.Akuzawa, et al.
    • Organizer
      Turkish-Japanese Joint Carbon Symposium
    • Place of Presentation
      Istanbul(Turkey)
    • Year and Date
      2010-03-19
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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