Hiroshima Conv. of JPI (54th Petroleum-Petrochemical Symposium of JPI)
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Presentation Information

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)Japanese

[1B07]Exploring the Impact of NO Concentration and Steam on NOx Adsorption Capacities in Pd/CHA

○Takeshi OHTSU1, Nao TSUNOJI2, Akira ODA1, Atsushi SATSUMA1 (1. Nagoya University, 2. Hiroshima University)

Keywords:

Passive NOx Adsorber,Pd/zeolite,NH3-SCR

In the Passive NOx Adsorber Pd/CHA, it is known that water vapor inhibits NO adsorption. However, this study discovered that supplying water vapor during NO adsorption increases the amount of NOx adsorbed. This enhancement was not observed when NO was supplied at low concentrations without simultaneous exposure to water vapor. It became clear that the promotive effect of water vapor on NOx adsorption only occurs when both NO and water vapor are present together.
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