2009 Fiscal Year Final Research Report
Novel Environmental Catalysts Based on Rare Earth Oxides
| Project/Area Number |
19205028
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Osaka University |
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Principal Investigator |
IMANAKA Nobuhito Osaka University, 工学研究科, 教授 (30192503)
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| Co-Investigator(Kenkyū-buntansha) |
MASUI Toshiyuki 大阪大学, 工学研究科, 准教授 (00304006)
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| Co-Investigator(Renkei-kenkyūsha) |
TAMURA Shinji 大阪大学, 工学研究科, 助教 (80379122)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 窒素酸化物 / 粒子状物質 / 排ガス浄化触媒 / 希土類酸化物 / 立方晶C型構造 / 立方晶蛍石型構造 / 酸化還元 |
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| Research Abstract |
Novel environmental catalysts based on rare earth oxides with the C-type cubic structure or the cubic fluorite structure were synthesized by artificial control of surface and bulk defects of these oxides. For instance, Y_2O_3-Tb_4O_7-BaO catalysts can realize 100% conversion of nitric oxide at 900℃, CeO_2-Pr_6O_<11>-Bi_2O_3 catalysts can oxidize particulate matters completely at 345℃, and Pt/CeO_2-ZrO_2-Bi_2O_3 catalysts can oxidize CO at 20℃, ethylene at 65℃, toluene at 120℃, and acetaldehyde at 140℃ into carbon dioxide and steam, respectively.
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