Factors Affecting the Catalytic Performance of La-K-Mn-O Perovskite Oxides for Diesel Soot Oxidation

• Hironobu Shimokawa

• Hajime Kusaba

• Hisahiro Einaga

抄録

Soot combustion performance of K-containing perovskite oxides, La0.8K0.2MnO3 (LKM82), was evaluated under tight- and loose-contact conditions. The perovskite oxides were prepared by evaporation-to-dryness methods using malic acid or citric acid as the complexing reagents. Catalyst surface area, surface K concentration, and morphology of the LKM82 catalysts can be controlled by changing the preparation conditions. The temperature of soot combustion decreased with increasing catalyst surface area and surface K concentration of the LKM82 catalysts, indicating that these are important factors controlling the soot combustion performance. The increase in surface area and surface K concentration of the LKM82 catalysts improved soot ignition activity and promoted the soot combustion reaction after ignition. In the loose-contact mode, the ratio of the amount of catalytically combusted soot to that of non-catalytically combusted soot increased with an increase in catalyst surface area and surface K concentration of the LKM82 catalysts. The apparent activation energy of the catalytic soot combustion with the perovskite oxides that have both high surface area and high surface K concentration was much lower than that of non-catalytic soot combustion.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 88 (10), 1486-1493, 2015-10

  Tokyo : Chemical Society of Japan

キーワード

• General Chemistry

詳細情報

• CRID: 1522825129640903168
• NII論文ID: 130005102815
• NII書誌ID: AA00580132
• ISSN: 00092673
• ISSN: 13480634
• DOI: 10.1246/bcsj.20150186
• NDL書誌ID: 026791257
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026791257
• Web Site: https://academic.oup.com/bcsj/article-pdf/88/10/1486/56278274/bcsj.20150186.pdf
• 本文言語コード: en
• NDL 雑誌分類:
  • ZP1(科学技術--化学・化学工業)
• データソース種別:
  • NDL
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