Catalytic properties of lanthanum strontium transition metal oxides (La1-xSrxBO3; B = manganese, iron, cobalt, nickel) for toluene oxidation

1993 ◽  
Vol 32 (11) ◽  
pp. 2563-2572 ◽  
Author(s):  
Jeng Jong Liang ◽  
Hung-Shan Weng
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Catalytic Properties ◽  
Toluene Oxidation ◽  
Iron Cobalt ◽  
Cobalt Nickel ◽  
Lanthanum Strontium

Catalytic properties of some mixed transition-metal oxides

1991 ◽  
Vol 11 (3-4) ◽  
pp. 133-141 ◽  
Author(s):  
K.J. Haralambous ◽  
Z. Loizos ◽  
N. Spyrellis
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Catalytic Properties ◽  
Mixed Transition

Activity of highly dispersed transition metal oxides formed in Y zeolite for toluene oxidation

Zeolites ◽  
1988 ◽  
Vol 8 (5) ◽  
pp. 387-392 ◽  
Author(s):  
Minoru Suzuki ◽  
Kazuo Tsutsumi ◽  
Hiroshi Takahashi ◽  
Yasukazu Saito
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Y Zeolite ◽  
Toluene Oxidation ◽  
Highly Dispersed

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

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