| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
Aluminosilicates are often used as adsorbents for pressure-swing CO2 separation process. However, the dehumidification is necessary because water adsorbs selectively on aluminosilicates rather than CO2.
Aiming to develop the novel zeolite adsorbents for CO2 separation in wet condition, core-shell structured zeolite which is an aluminosilicate coated with pure silica zeolite was synthesized and its CO2 adsorption property in wet condition was evaluated. The conventional aluminosilicate exhibited significant decrease in CO2 adsorption in the presence of water vapor. In contrast, the decrease in CO2 adsorption was remarkably limited on the core-shell structured zeolite. This clearly indicates the pure silica zeolite coating layer which is highly hydrophobic could inhibit adsorption of water which adsorbs on aluminosilicate strongly rather than CO2. The core-shell structured zeolites is expected to achieve a much high energy efficient CO2 separation process.
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