| 초록 |
The NOx storage and reduction (NSR) technology is a potential technique to reduce NOx in lean exhaust. A typical NSR catalyst consists of the following components : precious metals, such as platinum or palladium and rhodium, a storage component, usually barium, and a high surface area support, such as γ-alumina. Moreover, MMO(Mixed Metal Oxide), noble metal free catalyst has been investigated as a candidate for NSR catalyst. In this investigation, we synthesized NSR catalysts with metal oxide except for BaO as a primary component, and analyzd reductive property using H2-TPR. Synthesized catalysts give us interesting results with improvement of storage performance. |
