| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a carbon dioxide gas-absorbing material which can absorb a large amount of carbon dioxide gas at high temperature, and maintains a small decrement of the maximum weight variation due to absorption of carbon dioxide gas even after repeating a cycle of carbon dioxide gas absorption/desorption many times, and a carbon dioxide gas separation method and apparatus using the gas-absorbing material. <P>SOLUTION: The carbon dioxide gas-absorbing material mainly comprises a composite oxide represented by a general formula Ba<SB>A-x</SB>Sr<SB>x</SB>TiO<SB>4</SB>and a molar ratio A of the total of Ba and Sr to Ti is in a range of 1.8≤A≤2.2, and x is in a range of 0.1≤x≤0.7. Using the carbon dioxide gas-absorbing material, the carbon dioxide gas absorption is carried out under a condition of a pressure of 1.0×10<SP>4</SP>-1.0×10<SP>6</SP>Pa and a temperature of 500-900°C, and the carbon dioxide gas desorption is carried out under a condition of a pressure of≤1,000 Pa and a temperature of≥750°C. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
