Selected Paper : Preparation of Supported LaMnO₃ Catalysts by Selective Deposition on Alumina and Their Catalytic Activity for Propane Oxidation

• Asada Teruaki

  Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

• Kusaba Hajime

  Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University

• Einaga Hisahiro

  Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University

• Teraoka Yasutake

  Department of Energy and Material Sciences, Faculty of Engineering Sciences, Kyushu University

書誌事項

タイトル別名

• Preparation of Supported LaMnO₃ Catalysts by Selective Deposition on Alumina and Their Catalytic Activity for Propane Oxidation
• Preparation of Supported LaMnO3 Catalysts by Selective Deposition on Alumina and Their Catalytic Activity for Propane Oxidation

抄録

Alumina-supported LaMnO₃ (LaMnO₃/Al₂O₃) catalysts with various dispersion and locations were prepared by utilizing the alumina pore structures. LaMnO₃ perovskite oxides were selectively deposited in and/or outside the pore of γ-Al₂O₃ support by controlling the deposition methods. The LaMnO₃/Al₂O₃ catalysts were characterized and their catalytic activities for propane oxidation were investigated. X-ray diffraction, electron diffraction, and catalytic studies confirmed the formation of a perovskite structure on the alumina support. The catalytic activity for propane oxidation strongly depended on the preparation method, and the perovskite catalysts deposited in the inside pore of alumina exhibited higher activity than those deposited on the outside pore of alumina. The surface area of perovskite oxides on support was quantitatively evaluated by temperature-programmed desorption of CO₂. The trend for the surface areas of LaMnO₃ on γ-Al₂O₃ estimated by the method was consistent with the trend of the rate for complete propane oxidation normalized by catalyst weight, whereas the rate normalized by the surface area of perovskite oxide was almost independent of the dispersion, crystallite sizes, and deposition methods. The activity of LaMnO₃/Al₂O₃ with the intrapore deposition was almost independent of calcination temperatures ranging from 650 to 1000 °C, in marked contrast with the extrapore deposition catalysts, whose activities greatly decreased with increasing calcination temperatures. For the intrapore deposition catalysts, the highest activities were obtained when the loading level was 20 wt % and decreased with a further increase in the loading level. At high loading levels (40 wt %), extrapore deposition of LaMnO₃ on the intrapore deposition catalysts improved their activities for propane oxidation.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 88 (8), 1036-1046, 2015

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390001204141102464
• NII論文ID: 130005092051
• NII書誌ID: AA00580132
• DOI: 10.1246/bcsj.20150111
• ISSN: 13480634
• ISSN: 00092673
• NDL書誌ID: 026648052
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026648052
• Web Site: https://academic.oup.com/bcsj/article-pdf/88/8/1036/56278221/bcsj.20150111.pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
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