Process for the preparation of rare-earth sulphides from halides
The present invention concerns a process for the preparation of a rare-earth sulphide characterized in that a rare-earth halide is brought into the presence of an alkaline or aluminum halide and heated in the presence of hydrogen sulphide at a temperature which is sufficient to volatilize the halide...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
05.05.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | The present invention concerns a process for the preparation of a rare-earth sulphide characterized in that a rare-earth halide is brought into the presence of an alkaline or aluminum halide and heated in the presence of hydrogen sulphide at a temperature which is sufficient to volatilize the halides. More particularly, the halide is a chloride, the rare-earth is cerium and the alkali is sodium. |
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Bibliography: | Application Number: US19960620071 |