Generation of Nano-Catalyst Particles by Spinodal Nano-Decomposition in Perovskite

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概要

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• A new mechanism of nano-catalyst generation based on the spinodal nano-decomposition in self-regenerating perovskite catalysts for automotive-emissions control is proposed. To demonstrate existence of the spinodal nano-decomposition in real perovskite catalysts, we performed first-principles calculations to evaluate the free energy of La(Fe1-xPdx)O3 and La(Fe1-xRhx)O3. The result indicates appearance of a spinodal region in the phase diagram of each material. Formation of nano-catalyst particles in the perovskite host matrix is crucial for the self-regeneration of perovskite catalyst. Based on the spinodal nano-decomposition model, possible materials are designed for new three-way catalyst with no contents of precious metal.

• Japan Society of Applied Physicsの論文
• 2008-10-25

著者

• Katayama Yoshida

  Graduate School Of Engineering Science Osaka University

• Kusakabe Koichi

  Graduate School Of Engineering Science Osaka University

• Kizaki Hidetoshi

  Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-853

• Katayama-Yoshida Hiroshi

  Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-853

• Nogami Soichiro

  Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 567-8531, Japan

• Nogami Soichiro

  Graduate School Of Engineering Science Osaka University

• Kizaki Hidetoshi

  Osaka Univ. Osaka Jpn

• Kizaki Hidetoshi

  Graduate School Of Engineering Science Osaka University

• Katayama-Yoshida Hiroshi

  Graduate School of Engineering Science, Osaka University

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