| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Continuous hydrothermal synthesis method has been used for synthesis of various metal oxide nanoparticles. By using flow-type reactor, rapid heating of the precursor and large scale production of nanoparticles can be achieved. Owing to extremely rapid reaction under a supercritical condition, the mixing of precursor and preheated water has a high impact to the particle size and its distribution. Therefore, to establish a rational design method, the investigation of mixing effect is needed as well as reaction kinetic analysis. In this work, hydrothermal synthesis of cerium oxide nanoparticle with flow-type reactor was carried out, and the effect of mixing rate and reaction rate on the average particle size was examined. The results show that when a dimensionless number (ratio of the reaction rate to the mixing rate) is less than a certain value, a reaction controlled condition where the produced particle size is independent of mixing rate.
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