Lean NOx trap morphology changes with lean/rich cycling

Charles H F Peden, Do Heui Kim, Ja Hun Kwak, Xianqin Wang, Tamas Szailer, William Epling, Jonathan Hanson, Janos Szanyi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The fundamentals of NO uptake/release processes have been studied extensively on NO storage/reduction catalysts (also known as lean-NO traps (LNT) and NO adsorber catalysts) based on BaO on alumina support. To understand the processes that take place upon NO adsorption on these BaO/Al2O3 catalysts in different reactant gas mixtures, and in the subsequent regeneration, studies utilizing a series of spectroscopic techniques were carried out. The adsorption of NO was examined on 2, 8, and 20% BaO/Al2O3 catalysts with or without Pt using a series of in situ spectroscopic techniques. A morphology cycle that the BaO/Al2O3 systems go through during NO uptake and release was proposed. The effects of high temperature processes on the morphologies and performance of these model LNT catalysts were examined. This is an abstract of a paper presented at the AIChE Annual Meeting (San Francisco, CA 11/12-17/2006).

Original languageEnglish (US)
Title of host publication2006 AIChE Annual Meeting
StatePublished - Dec 1 2006
Externally publishedYes
Event2006 AIChE Annual Meeting - San Francisco, CA, United States
Duration: Nov 12 2006Nov 17 2006

Other

Other2006 AIChE Annual Meeting
Country/TerritoryUnited States
CitySan Francisco, CA
Period11/12/0611/17/06

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Chemical Engineering(all)
  • Bioengineering
  • Safety, Risk, Reliability and Quality

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