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ID 48087
フルテキストURL
著者
Tanaka, Toshiyuki Toyota Central Research and Development Labs., Inc.
Tajima, Ichirou Toyota Central Research and Development Labs., Inc.
Kato, Yuichi Toyota Central Research and Development Labs., Inc.
Nishihara, Yasushi Division of Chemistry and Biochemistry, Graduate School of Natural Science and Technology, Okayama University
Shinjoh, Hirofumi Toyota Central Research and Development Labs., Inc.
抄録
A Ba-Ti composite oxide was formed on a NOx storage and reduction catalyst via impregnation of a Ba-Ti precursor solution composed of H(2)O(2) added to a complex prepared using the citric acid method. The structure of the Ba-Ti composite in solution was analyzed by chemical composition analysis and FT-Raman and UV-vis spectroscopy. MM2 calculations were performed to propose its chemical structure. Both Ba and Ti together were found to form a composite molecule in the solution. Furthermore, TEM-EDX and XRD analyses of the Ba-Ti composite oxide on the catalyst prepared by impregnation with the Ba-Ti composite aqueous solution revealed that Ba and Ti in the catalyst were highly dispersed at the nm scale. The formation of the Ba-Ti composite oxide on the NSR catalyst enhanced sulfur desorption efficiency and led to high-performance NO(X) conversion as a NO(X) storage and reduction activity catalyst after desulfation treatment. It was assumed that the existence of nano-scaled Ba compounds combined with Ti was efficient for the inhibition of the sintering of barium sulfate and its facile decomposition. It was found that dispersion of Ba compounds for NO(X) storage materials using a Ba-Ti complex solution is an efficient way to improve the durability of NSR catalysts.
発行日
2011-02-22
出版物タイトル
Applied Catalysis B: Environmental
102巻
3-4号
出版者
Elsevier Science BV.
開始ページ
620
終了ページ
626
ISSN
0926-3373
NCID
AA1082551X
資料タイプ
学術雑誌論文
プロジェクト
エネルギー環境新素材拠点
言語
English
OAI-PMH Set
岡山大学
著作権者
© 2011 Elsevier B.V. All rights reserved.
論文のバージョン
author
査読
有り
DOI
Web of Sience KeyUT