| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
It is an urgent issue to capture and store CO2 which is one of principal greenhouse gases. There have several problems in the CCS technologies used for a pilot plant, such as the low CO2 selectivity or high energy cost for the regeneration of materials for CCS. I studied CO2 sorptivity of alkali-metal carbonates under a moist condition to solve the problems because alkali-metal carbonates (Na2CO3 and K2CO3) can selectively capture CO2 with water vapor. However, there were problems of the slow reaction rate and high regeneration energy cost for Na2CO3 and K2CO3. To improve the problems, I prepared nanostructured alkali-metal carbonates by synthesizing a composite consisting of nanocarbons and the alkali-metal carbonates and by introducing different metal ions into crystals of the alkali-metal carbonates. The improvements were observed by forming such nanostructures in the crystals of the alkali-metal carbonates.
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