Method of producing high temperature superconductors by a molten hydroxide process
This patent describes a method for producing high temperature superconductors by a molten hydroxide process. The process comprising the steps of: mixing stoichiometric amounts of metal compounds, one metal of the metal compounds being selected from the group consisting of rare earth elements or combinations of rare earth elements, with a solid alkali metal hydroxide, thereby forming a mixture; melting the alkali metal hydroxide of the mixture to drive off water; and filtering the mixture to remove the alkali metal ions. This patent describes the method according to the first claims wherein filtering further comprises cooling the mixture to about 150{sup 0}C, placing the cooled mixture in a quantity of distilled water sufficient to extract the metal hydroxide from the mixture, thereby forming a solution; filtering the solution whereby the metal hydroxide is separated from the filtrate; and washing the metal oxide until the filtrate has a substantially neutral pH.
- Assignee:
- Temple Univ. of the Commonwealth System of Higher Education, Philadelphia, PA
- Patent Number(s):
- US 4866030
- Application Number:
- PPN: US 7083549A
- OSTI ID:
- 5448549
- Resource Relation:
- Patent File Date: 6 Aug 1987
- Country of Publication:
- United States
- Language:
- English
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