Formation of LaCoO{sub 3} highly dispersed on ZrO{sub 2}

Journal Article · Wed Aug 26 04:00:00 EDT 1992 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja00044a030· OSTI ID:223957

Mizuno, Noritaka; Fujii, Hiroaki; Igarashi, Hiroshi; Misono, Makoto ^[1]

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1. Univ. of Tokyo (Japan)

The well-characterized La-Co overlayer was prepared on the surface of ZrO{sub 2} powder by impregnating ZrO{sub 2} with aqueous solutions of the mixtures of La and Co acetates followed by calcination at various temperatures. The preparation processes and the structure of La-Co oxide overlayers were investigated in detail by IR, XRD, XPS, EDX, TEM, and adsorption of NO and pyridine. It was concluded that a highly dispersed La-Co oxide overlayer which may have the LaCoO{sub 3} perovskite structure was formed. The resulting La-Co/ZrO{sub 2} catalysts showed very high catalytic activities for complete oxidation of propane. 50 refs., 10 figs., 6 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 223957
• Journal Information: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 18 Vol. 114; ISSN JACSAT; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
CALCINATION
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
COBALT OXIDES
LANTHANUM OXIDES
OXIDATION
PEROVSKITE
PROPANE
STRUCTURAL CHEMICAL ANALYSIS
X-RAY DIFFRACTION
ZIRCONIUM OXIDES