Reaction equation
[O-2:1].[La+3:2].[O-2:3].[O-2:4].[La+3].[O-2].[Cr+3:7].[O-2].[O-2].[Cr+3]>O>[Cr:7]([O-:4])([O-:3])=[O:1].[La+3:2].[Cr:7]([O-:4])([O-:3])=[O:1].[Cr:7]([O-:4])([O-:3])=[O:1].[La+3:2]Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
A hundred parts of lanthanum oxide having an average particle diameter of 1 μm, 125 parts of chromium oxide having an average diameter of 1 μm, and 100 parts of ion-exchanged water were put into a polyethylene pot together with zirconia balls, subjected to pulverization and mixing for 20 hours, and then dehydrated by filter pressing. A resultant cake was dried in a drying chamber at 120° C. for 24 hours. The dried cake was ground coarsely, and placed in an aluminacrucible, and heated in air at 1,200° C. for 2 hours to form lanthanum chromite. A hundred parts of the lanthanum chromite powder thus obtained and 100 parts of ion-exchanged water were put into a polyethylene pot together with 200 parts of zirconia balls, and pulverized for 48 hours to provide an average particle diameter of 0.5 μm.
Workup
- additionmixing for 20 hours
- filtrationby filter
- customA resultant cake was dried in a drying chamber at 120° C. for 24 hours
- temperatureheated in air at 1,200° C. for 2 hours
Sources & evidence
- ORD record
- ord-73b86323ec1642b3ab01288da08a27a3
- Source dataset
- uspto-grants-1998_11
- Patent number
- US05834108
Linked notes
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