Thermodynamic consideration on the absorption properties of carbon dioxide to basic oxide

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

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Carbon capture and storage (CCS) is a key technology for greatly reducing CO2 emissions in the long term, and therefore a low-energy CCS process needs to be developed. This study focused on the solid absorption process using basic oxide, and thermodynamically examined the carbonation abilities of various basic oxides and compounds containing CaO, BaO or Li 2O. The CO2 absorption and desorption behavior of these materials containing alkali earth metal oxides was investigated by measuring the weight change over a wide range of temperatures from room temperature to 1 100°C in CO2 atmosphere. It was experimentally confirmed that the partial pressure of CO2 equilibrated with both Ba 2TiO4 and BaCO3 was higher than that equilibrated with both BaO and BaCO3. The formation of compound increased the equilibrium partial pressure of CO2 and lowered the starting temperature of CO2 desorption.

Original languageEnglish
Pages (from-to)1532-1538
Number of pages7
JournalIsij International
Volume50
Issue number11
DOIs
Publication statusPublished - 2010

Keywords

  • Bao
  • Basic oxide
  • Cao
  • Co adsorption
  • Co desorption
  • Co emissions
  • Global warming
  • Lio

ASJC Scopus subject areas

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

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