Water-induced morphology changes in BaO/γ-Al2O3 NOx storage materials

Journal Article · Wed Mar 07 04:00:00 EST 2007 · Chemical Communications, 2007(9):984-986

DOI:https://doi.org/10.1039/b613674e· OSTI ID:909240

Szanyi, Janos; Kwak, Ja Hun; Kim, Do Heui; Wang, Xianqin; Hanson, Jonathan; Chimentao, Ricardo J; Peden, Charles HF

Exposure of NO2-saturated BaO/γ-Al2O3 NOx storage materials to H2O vapour results in the conversion of surface nitrates to Ba(NO3)2 crystallites, causing dramatic morphological changes in the Ba-containing phase, demonstrating a role for water in affecting the NOx storage/reduction properties of these materials.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 909240
• Report Number(s): PNNL-SA-53004; 19800; VT0401000
• Journal Information: Chemical Communications, 2007(9):984-986, Journal Name: Chemical Communications, 2007(9):984-986 Journal Issue: 9 Vol. 2007
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ADSORPTION
ALUMINIUM OXIDES
BARIUM NITRATES
BARIUM OXIDES
BaO/γ-Al2O3
CATALYTIC EFFECTS
Environmental Molecular Sciences Laboratory
MORPHOLOGICAL CHANGES
NITROGEN OXIDES
NOx adsorption
SORPTIVE PROPERTIES
WATER VAPOR
morpholgy cycle
water effect