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セリアと自動車触媒
https://nitech.repo.nii.ac.jp/records/2313
https://nitech.repo.nii.ac.jp/records/2313b111dabc-9db7-437d-949c-43e9d3183f0d
名前 / ファイル | ライセンス | アクション |
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本文_fulltext (91.2 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper_04(1) | |||||
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公開日 | 2011-08-04 | |||||
タイトル | ||||||
タイトル | セリアと自動車触媒 | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | セリア ト ジドウシャ ショクバイ | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | Ceria and Automotive Catalyst | |||||
著者 |
小澤, 正邦
× 小澤, 正邦 |
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著者別名 | ||||||
姓名 | Ozawa, Masakuni | |||||
書誌情報 |
セラミックス基盤工学研究センター年報 = Annual report of the Ceramics Research Laboratory Nagoya Institute of Technology 巻 2, p. 1-8, 発行日 2003-03-31 |
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出版者 | ||||||
出版者 | 名古屋工業大学セラミックス基盤工学研究センター | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 13471694 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11625130 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | This article focuses on the role of cerium oxide(ceria, CeO2)and the mixed oxide of cria-zirconia system, which areimportant as an excellent promoter for oxygen storage capacity in automotive three way catalyst, for readers in ceramic engineeringfield. Automotive three way catalyst system(TWC)is generally operating under the condition of the certain rangein air-fuel ratio(A/F). Most automotive catalysts consist of precious metals such as Pt, Rh and Pd, promoters and transitionaluminasupport. CeO2 can provide oxygen for oxidizing CO and HC under rich A/F condition, and remove it from exhaustgas phase for reducing NOx under lean A/F. For the highest purifying activity, the action that Ce4+ in CeO2 lattice easilychanges to Ce3+ is useful. Its nonstoichiometrical behavior in the state of crystalline fluorite-type oxide is essential for this catalyticoperation. The practical use of automotive catalyst under harsh condition has required better durability performance ofcatalysts for advanced engine systems, which are matched in various kinds of new version automobiles. Ceria-zirconia system,which was first developed by Ozawa and coworkers in 1980's, has been still important composition in recent automotivecatalysts. Here, it is described that alumina-supported ceria is affected by the addition of zirconia regarding with specific surfacearea stability. Newly, the fractal sintering of zirconia based powders has been investigated by neutron scattering techniquesin order to describe powder-state sintering in a catalyst. This is a short review on the role of the ceria mixed oxidesand possibility of ceria-related technology for future ceramic science. | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
見出し | ||||||
大見出し | <解説> | |||||
言語 | ja | |||||
見出し | ||||||
大見出し | <Review> | |||||
言語 | en |