Tohoku Univ. Technology : Oxygen storage material, catalyst for cleaning exhaust gas, and method for manufacturing oxygen storage material : T20-3135
Oxygen storage material comprising oxide containing κ phase having large specific surface area
CeO2-ZrO2 composite oxide with excellent oxygen storage capacity (OSC) has been used as an atmosphere control material for ternary catalysts used to purify exhaust gas from automobiles. Among CeO2-ZrO2 composite oxides, κ phase (cubic pyrochlore like structure) is known to exhibit the highest OSC. However, due to the high temperature required for the synthesis process of κ phase, the specific surface area is significantly reduced and practical application of κ phase is difficult. In the present invention, it has become possible to provide an atmosphere-controlling material consisting of an oxide containing κ phase, in which the decrease in the specific surface area is greatly suppressed by the synthesis process at a lower temperature than in the conventional process. The low temperature is realized by adding Fe oxide during the synthesis of the complex oxide. The material by this synthesis process shows a clear XRD pattern assigned to the κ phase and has a specific surface area of 3 m2/g or more. This shows the possibility of practical application of the κ phase, and it can be said that the technology is expected to improve the purification ability of exhaust gas.
Inquire About This Product
basic information
For details, please contact us or refer to the PDF.
Price range
Delivery Time
Applications/Examples of results
For details, please contact us or refer to the PDF.
catalog（1）
Download All Catalogs
Company information
The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
![[Leveling Correction] Leveling correction of concrete floors "Teratec Method"](https://image.mono.ipros.com/public/product/image/d08/1267539002/IPROS70063422645318547243.jpeg?w=280&h=280)
