炭酸リチウム-金属酸化物系混合物の反応性と CO<sub>2</sub> 吸収剤への応用 Lithium Carbonate-Metal Oxide Mixtures and its Application for a CO2 Absorbent

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Author(s)

    • 山内 充 YAMAUCHI Mitsuru
    • 愛媛大学大学院理工学研究科物質生命工学専攻 Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
    • 板垣 吉晃 ITAGAKI Yoshiteru
    • 愛媛大学大学院理工学研究科物質生命工学専攻 Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
    • 青野 宏通 [他] AONO Hiromichi
    • 愛媛大学大学院理工学研究科物質生命工学専攻 Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
    • 定岡 芳彦 SADAOKA Yoshihiko
    • 愛媛大学大学院理工学研究科物質生命工学専攻 Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University

Abstract

Reactivity of the mixed powder of Li<sub>2</sub>CO<sub>3</sub> with several metal oxides (Y<sub>2</sub>O<sub>3</sub>, Al<sub>2</sub>O<sub>3</sub>, ZrO<sub>2</sub>, SiO<sub>2</sub> and ZrSiO<sub>4</sub>) in synthetic air and 100%CO<sub>2</sub> was examined to develop a high temperature repeatable CO<sub>2</sub> absorbent. The mixture of Li<sub>2</sub>CO<sub>3</sub> and Y<sub>2</sub>O<sub>3</sub> in molar ratio of 1 : 1 was stable in CO<sub>2</sub> up to 950°C but decomposed to form LiYO<sub>2</sub> at around 850°C in synthetic air (N<sub>2</sub> 79%+O<sub>2</sub> 21%, CO<sub>2</sub><0.5 ppm). The newly formed LiYO<sub>2</sub> started to absorb the CO<sub>2</sub> at 300°C with the reaction of 2LiYO<sub>2</sub>+CO<sub>2</sub>→Li<sub>2</sub>CO<sub>3</sub>+Y<sub>2</sub>O<sub>3</sub>. Since the mixture was fairly stable in CO<sub>2</sub> up to 980°C, the reversed reaction directed to CO<sub>2</sub> emission was not observed in CO<sub>2</sub>. LiYO<sub>2</sub> is a new material for a CO<sub>2</sub> absorbent available in a wide range of temperature.<br>

Journal

  • Journal of the Ceramic Society of Japan

    Journal of the Ceramic Society of Japan 114(1331), 648-650, 2006

    The Ceramic Society of Japan

Cited by:  1

Codes

  • NII Article ID (NAID)
    110004745092
  • NII NACSIS-CAT ID (NCID)
    AN10040326
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    0914-5400
  • NDL Article ID
    8034915
  • NDL Source Classification
    ZP9(科学技術--化学・化学工業--無機化学・無機化学工業--セラミックス・窯業)
  • NDL Call No.
    Z17-249
  • Data Source
    CJPref  NDL  NII-ELS  J-STAGE 
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