| Title: |
Generation of Nano-Catalyst Particles by Spinodal Nano-Decomposition in Perovskite |
| Authors: |
Kizaki, Hidetoshi, Kusakabe, Koichi, Nogami, Soichiro, Katayama-Yoshida, Hiroshi |
| Publication Year: |
2008 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Materials Science |
| More Details: |
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(Fe$_{1-x}$Pd$_x$)O$_3$ and La(Fe$_{1-x}$Rh$_x$)O$_3$. 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.
Comment: 10 pages, 4 figures |
| Document Type: |
Working Paper |
| DOI: |
10.1143/APEX.1.104001 |
| Access URL: |
http://arxiv.org/abs/0809.4827 |
| Accession Number: |
edsarx.0809.4827 |
| Database: |
arXiv |
