Abstract
Atomically dispersed Pd in Zeolites can adsorb NO to reduce NOx emission from vehicle exhausts at low temperature. In this contribution, low temperature NO adsorption abilities of Pd/ZSM-5 and Pd/SSZ-13 are comparatively studied. Co-adsorption of NO and H2O on Pd/ZSM-5 induced PdO sintering and deactivated NO adsorption ability. On the other hand, NO adsorption ability of Pd/SSZ-13 was maintained from the 500 °C treatment under NO and H2O where PdO sintering did not occur. Therefore, Pd/SSZ-13 would be the better candidate as NO storage material to reduce NOx emission from vehicle exhaust.
Original language | English |
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Pages (from-to) | 350-355 |
Number of pages | 6 |
Journal | Catalysis Today |
Volume | 360 |
DOIs | |
State | Published - 15 Jan 2021 |
Keywords
- Deactivation
- HO
- Low-temperature NO adsorption
- Pd/SSZ-13
- Pd/ZSM-5