CO2 absorption and desorption abilities of Li 2O-TiO2 compounds

Shigeru Ueda, Ryo Inoue, Kohei Sasaki, Koji Wakuta, Tatsuro Ariyama

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

As an initial stage of the creation of a new solid material for carbon dioxide capture and storage (CCS), the behaviors of CO2 absorption and desorption were investigated in terms of Li2O-TiO2 compounds. The LiTiO4 specimen began to absorb CO2 at 250°C with the formation of Li2TiO3 and Li 2CO3 phases. The absorption rate was significantly enhanced at 710°C by the formation of the Li-based liquid phase. Decomposition of Li2CO3 was observed above 960°C in CO2 atmosphere and above 900°C in Ar-10%CO2 atmosphere. In the formation of solid Li2CO3 after Li 4TiO4/CO2 reaction below 700°C, the reaction rate of CO2 absorption increased with the decreasing diameter of Li4TiO4 particles. The area ratio of the Li4TiO4 phase decreased and that of the Li 2TO3 phase increased in the Li4TiO4 sample after repeating the reaction path of CO2 absorption and desorption.

Original languageEnglish
Pages (from-to)530-537
Number of pages8
JournalIsij International
Volume51
Issue number4
DOIs
Publication statusPublished - 2011 Aug 8

Keywords

  • CO absorption and desorption
  • CO capture
  • LiCO decomposition
  • LiO-TiO compound
  • LiTiO
  • Solid cO absorption material

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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