Fundamental Studies of NOx Adsorber Materials at PNNL

Charles H. F.  Peden, Pacific Northwest National Laboratory

This talk will describe some recent results of a multi-year effort in the Institute for Interfacial Catalysis at Pacific Northwest National Laboratory to develop a fundamental understanding of the operation of ‘lean-NOx’ traps (LNTs, aka NOx storage reduction (NSR) catalysts or NOx adsorbers). Our efforts have focused on understanding the current limitation of both the capture and regeneration modes of model NOx adsorber materials, and have addressed details of the elementary adsorption, reaction and desorption processes, as well as catalyst material morphology changes and thermal stabilities.

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