Water-induced morphology changes in BaO/gamma-Al2O3 NOx storage materials.
Exposure of NO(2)-saturated BaO/gamma-Al(2)O(3) NO(x) storage materials to H(2)O vapour results in the conversion of surface nitrates to Ba(NO(3))(2) crystallites, causing dramatic morphological changes in the Ba-containing phase, demonstrating a role for water in affecting the NO(x) storage/reduction properties of these materials.
Szanyi
János
J
Institute for Interfacial Catalysis, Pacific Northwest National Laboratory, Richland, WA 99352, USA. janos.szanyi@pnl.gov
Kwak
Ja Hun
JH
Kim
Do Heui
DH
Wang
Xianqin
X
Hanson
Jonathan
J
Chimentao
Ricardo J
RJ
Peden
Charles H F
CH