| Budget Amount *help |
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2018: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Outline of Final Research Achievements |
Cerium oxide-based materials are used as the co-catalyst for purification of exhaust emissions from automobile combustion engines because of their oxygen storage capacity (OSC). However, the low OSC activity at low temperature is the problem to be solved. The author succeeded to fabricate nanostructured cerium oxide from Ce-Al binary alloy by use of his original dealloying-oxidation method. The obtained materials exhibit remarkable OSC activities, but their thermal stability is low. On the other hand, the ceria-zirconia solid solution prepared from Ce-Zr-Al ternary alloy improve the thermal stability as well as the low-temperature OSC activity.
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