Behavior of NO 2 molecules in BaY, FAU zeolite studied by synchrotron based techniques

Xianqin Wang, Jonathan C. Hanson, Jose A. Rodriguez, Janos Szanyi

Research output: Contribution to journalConference articlepeer-review


BaY zeolites are very promising catalysts for catalytic NO x reduction. The structural and catalytic properties of BaY, Faujasite zeolites were studied using synchrotron based time-resolved XRD and XANES. Dehydration and NO 2 dosing were employed as probe methods. The location of the Ba cations changed because of interactions with the gas molecules. In the model generated from Rietveld refinement, a N 4O 6 cluster was found in the supercage, and a different N containing species was observed on a Ba site. The changes to this structure during thermal heating were also followed. Implications for SCR and zeolite sensors are also presented. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA, 8/22-26/2004).

Original languageEnglish (US)
Pages (from-to)INOR-681
JournalACS National Meeting Book of Abstracts
Issue number1
StatePublished - 2004
Externally publishedYes
EventAbstracts of Papers - 228th ACS National Meeting - Philadelphia, PA, United States
Duration: Aug 22 2004Aug 26 2004

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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