Preparation and catalytic properties of low content Ag-added ZrO₂ for soot oxidation

• RAJ Sudarsan

  IMaSS, Nagoya University Berhampur University

• HATTORI Masatomo

  IMaSS, Nagoya University

• OZAWA Masakuni

  IMaSS, Nagoya University

抄録

Low content (0.1–3.4 wt %) Ag added ZrO₂ catalysts were synthesized by a hydrothermal method for soot combustion catalysis. The thermal stability and microstructure were characterized by X-ray diffractogram, field emission scanning microscopy, surface area and X-ray Absorption Fine Structure (XAFS) measurement. Soot oxidation temperature of Ag/ZrO₂ catalysts was able to be controlled by changing heat-treatment temperature for starting powders. The mixture of metallic Ag and ionic Ag₂O was observed by the XAFS spectra, and catalysts maintaining thermal stability were modified by active Ag/Ag₂O mixed state on ZrO₂. The catalysts with only 0.9 and 3.4 wt % doping of Ag in ZrO₂ were effective and a better candidate for diesel soot oxidation catalysis.

収録刊行物

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 127 (11), 818-823, 2019-11-01

  公益社団法人 日本セラミックス協会

キーワード

• Ag
• ZrO₂
• Catalyst
• Thermal stability
• Soot oxidation

詳細情報

• CRID: 1390282752357471104
• NII論文ID: 130007740832
• DOI: 10.2109/jcersj2.19121
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/127/11/127_19121/_pdf
• 本文言語コード: en
• データソース種別:
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